Choose a workflow, prepare the right inputs and understand what to check before sharing the result. Each guide links to its working tool.
459 practical guides across 23 categories.
Video15 guides
Teleprompter & Camera Recorder guide
Scroll your script while recording camera and microphone locally.
Read the guide →Video Frame Grabber guide
Seek through a video and save clean, full-resolution still frames.
Read the guide →Video Blur & Bleep guide
Add timed blur, pixel or cover masks and mute or bleep sensitive audio.
Read the guide →YouTube Chapter Builder guide
Mark, validate and export video chapters with precise timestamps.
Read the guide →Reverse & Boomerang Video guide
Reverse a short video or create smooth forward-and-back loops.
Read the guide →Record a video voiceover with timed takes and background music
Add continuous or interval-based narration to a video, edit takes, mix music and export a private browser-local MP4.
Read the guide →Video Compressor in your browser
Compress video with quality presets or a target size. Compare the actual result.
Read the guide →Video Crop & Resize in your browser
Crop and resize video with live framing, focal positioning and social presets.
Read the guide →Audio Visualizer Maker in your browser
Create colourful waveform and spectrum videos with gradient styles and photo backgrounds.
Read the guide →Stop Motion Maker in your browser
Arrange photos, tune each frame, preview with onion skin and export animation.
Read the guide →Make a reel with video, music and timed captions
Build a two-minute vertical reel for Instagram, YouTube Shorts or TikTok, with local mixing and MP4 export.
Read the guide →Video to Audio in your browser
Extract video soundtracks, trim, fade and export MP3 or WAV locally.
Read the guide →Video Trimmer in your browser
Trim video precisely, change framing and speed, rotate or mute, then export MP4 or WebM.
Read the guide →Video Joiner in your browser
Reorder and trim clips, match their dimensions and join them into MP4 or WebM.
Read the guide →GIF Maker & Editor in your browser
Create and edit GIFs from video, animated GIFs or image sequences with palette and loop controls.
Read the guide →Social media17 guides
Social Profile Grid Splitter: workflow and limits
Slice one photo into a numbered profile grid and download every tile.
Read the guide →Panorama Carousel Splitter: workflow and limits
Split a wide photo into seamless, swipeable carousel panels.
Read the guide →Social Engagement Analyzer: workflow and limits
Compare post engagement by followers, reach, impressions or views.
Read the guide →Follower Growth Tracker: workflow and limits
Track audience changes and model a clearly labeled growth projection.
Read the guide →Best Posting Time Analyzer: workflow and limits
Find promising weekday and hour windows in your own post history.
Read the guide →Audience Retention Analyzer: workflow and limits
Inspect a retention curve, key checkpoints and the steepest audience drop.
Read the guide →Giveaway Comment Picker: workflow and limits
Filter supplied entries and draw winners with browser-secure randomness.
Read the guide →Hashtag Collection Manager: workflow and limits
Build reusable hashtag collections, remove duplicates and copy a selected set.
Read the guide →Bio Link Page Builder: workflow and limits
Create a clean link-in-bio page and download a standalone website.
Read the guide →Social Text Style Studio: workflow and limits
Create Unicode text styles for bios and captions, with plain-text alternatives.
Read the guide →UTM Link Builder: A Practical Guide
Build campaign-tagged URLs individually or in batches, preserving existing query parameters and fragments.
Read the guide →Thumbnail Preview & Compare guide
Compare thumbnails and titles in realistic mobile and desktop previews.
Read the guide →Testimonial & Review Card Maker guide
Turn a customer quote into a branded, high-resolution review card.
Read the guide →Lower Third & Name Overlay Maker guide
Design transparent name and role overlays for your video editor.
Read the guide →Subtitle Translation Aligner guide
Align supplied translations to original subtitle timing. Review paired cues and export translated or bilingual SRT and VTT.
Read the guide →Frame screenshots for sharing
Add browser frames, gradient backgrounds, rounded corners and opaque privacy masks. Export PNG, JPG or WebP.
Read the guide →Create social carousels, thumbnails and post previews
A practical guide to readable carousel slides, thumbnail cropping, approximate post previews and branded QR codes.
Read the guide →Audio15 guides
Audio Loop Seam Maker guide
Choose loop boundaries, match nearby zero crossings and blend the seam. Audition repeated playback and export a WAV loop.
Read the guide →Audio Noise Reducer in your browser
Reduce steady noise, learn a noise profile, filter hum and compare the removed sound.
Read the guide →Paint away unwanted audio frequencies with a spectrogram
Use time-frequency selections, a spectral brush, restore and removed-sound auditioning to edit audio locally.
Read the guide →Audio Equalizer in your browser
Use six parametric bands, high/low-pass and shelf filters, notch filters, presets and an accurate response graph.
Read the guide →Audio Compressor & Limiter in your browser
Apply stereo-linked peak or RMS compression with soft knee, attack/release, makeup gain, parallel mix and lookahead sample-peak limiting.
Read the guide →Audio Tag Editor in your browser
Edit MP3 title, artist, album, genre, year, track, disc and comments; replace cover artwork or remove ID3 tags without re-encoding audio.
Read the guide →Tone Generator in your browser
Generate sine and dual tones, linear or log sweeps, white/pink noise and stereo channel tests with phase, level, duration and WAV or MP3 export.
Read the guide →Volume Booster & Normalizer in your browser
Boost or reduce volume, normalize peaks to a chosen ceiling and remove DC offset.
Read the guide →Audio Speed & Pitch Changer in your browser
Speed up or slow down recordings with linked pitch, semitone presets, reverse playback and MP3 or WAV export.
Read the guide →Stereo Channel Editor in your browser
Extract left or right, swap channels, mix mono, isolate mid or side, adjust stereo width and invert polarity.
Read the guide →Audio Joiner & Crossfade in your browser
Join audio clips, reorder and trim tracks, adjust individual volume and export MP3 or WAV with crossfades.
Read the guide →Voiceover + Music Mixer in your browser
Mix voice and music, loop a backing track, set its start time and lower music automatically during speech.
Read the guide →Audio Silence Remover in your browser
Detect quiet pauses, review and preview proposed cuts, keep breathing space and export a shorter recording.
Read the guide →Choose an audio conversion format
Convert browser-supported audio to MP3, WAV or FLAC with bitrate, mono, volume and batch ZIP controls.
Read the guide →Cut a song into a ringtone without uploading it
Choose a precise audio selection, preview fades and volume, and understand MP3 quality, WAV size and phone ringtone compatibility.
Read the guide →PDF28 guides
Word to PDF: settings, examples and limits
Convert modern Word documents into a PDF with local layout, embedded-font support and conversion warnings.
Read the guide →Excel to PDF: settings, examples and limits
Print selected Excel worksheets to PDF with source formatting, paper size and orientation controls.
Read the guide →PowerPoint to PDF: settings, examples and limits
Convert PowerPoint slides to PDF with slide-range, hidden-slide and font controls.
Read the guide →PDF to PowerPoint: settings, examples and limits
Turn selected PDF pages into high-quality image slides in a downloadable PPTX presentation.
Read the guide →PDF Print Layout: settings, examples and limits
Arrange 2, 4 or 8 PDF pages per sheet with paper, ordering, spacing and print-mark controls.
Read the guide →PDF/A Converter: settings, examples and limits
Rebuild an image-only archival PDF targeting PDF/A-2b, with embedded sRGB color information and XMP metadata.
Read the guide →PDF/A Preflight Checker: settings, examples and limits
Inspect PDF/A identification, color profile, font embedding and active-content indicators without uploading the document.
Read the guide →PDF Accessibility Checker: settings, examples and limits
Review document language, tags, figure descriptions and form labels, then download an actionable accessibility report.
Read the guide →PDF Text Editor: settings, examples and limits
Select and replace actual PDF text objects, retain supported fonts and verify the saved replacement text.
Read the guide →PDF Form Filler: practical guide and limitations
Complete PDF text fields, checkboxes, radio groups and dropdowns, then save an interactive or flattened copy.
Read the guide →Searchable PDF / OCR: practical guide and limitations
Add a searchable English text layer to scanned PDF pages, with local OCR and a text download.
Read the guide →PDF Page Organizer: practical guide and limitations
Reorder, rotate, duplicate, insert or remove PDF pages in a visual page workspace.
Read the guide →Crop & Resize PDF: practical guide and limitations
Trim page margins and fit selected PDF pages to A4, Letter or a custom paper size.
Read the guide →Redact PDF: practical guide and limitations
Cover sensitive areas and rebuild a verified image-only PDF without the original hidden text or attachments.
Read the guide →Flatten PDF Forms: practical guide and limitations
Merge existing PDF form values into page artwork for consistent viewing and printing.
Read the guide →PDF Form Creator: practical guide and limitations
Place interactive text fields, checkboxes and dropdowns on PDF pages with precise positioning.
Read the guide →PDF Bookmark Editor: practical guide and limitations
Create or replace a clickable PDF outline with nested headings and page destinations.
Read the guide →Extract PDF Images: practical guide and limitations
Save embedded PDF pictures as individual PNGs or a ZIP, with page and size information.
Read the guide →Repair PDF: practical guide and limitations
Attempt to recover readable PDF pages into a clean document, with a page-by-page recovery report.
Read the guide →PDF Compare: A Practical Guide
Compare PDF text and current-page pixels, review a change report and save a highlighted difference image.
Read the guide →PDF to Excel: A Practical Guide
Extract selectable PDF tables, adjust column boundaries, correct cells and export real XLSX or CSV files.
Read the guide →PDF Page Numberer: A Practical Guide
Add page numbers to selected PDF pages with custom templates, starting numbers, placement and styling.
Read the guide →PDF Watermark: A Practical Guide
Add text watermarks to PDF pages with color, opacity, angle, placement and repeated-stamp controls.
Read the guide →PDF to Text: A Practical Guide
Extract selectable PDF text by page range, review or edit it and download a UTF-8 text file.
Read the guide →PDF Booklet Maker: A Practical Guide
Arrange PDF pages into folded booklet sheets, with signatures, binding direction and print-ready output.
Read the guide →Why a PDF may not get smaller after compression
Understand the difference between lossless PDF optimization and reducing image quality, and choose a realistic way to meet an upload limit.
Read the guide →PDF to Word: selectable text, scans, and realistic results
Find out whether a PDF contains selectable text, when OCR is needed, and what to review after exporting editable paragraphs to Word.
Read the guide →A practical checklist before combining or extracting PDF pages
Plan page order, choose ranges, protect originals, and check the result of a browser-based PDF workflow before sharing it.
Read the guide →Image11 guides
SVG Converter: A Practical Guide
Convert cleaned SVG artwork to PNG, JPG or WebP at chosen dimensions, with transparency and quality controls.
Read the guide →Image DPI & Print Size: A Practical Guide
Set real PNG print-density metadata or resample an image for a chosen physical print size.
Read the guide →Perspective Correction Tool guide
Set four corners to straighten photographed artwork, signs and surfaces. Export corrected PNG or JPG pixels.
Read the guide →Contact Sheet Maker guide
Arrange photos into numbered contact sheets with adjustable grids, filenames and multi-page PDF export.
Read the guide →Image Color Replacer in your browser
Recolor picked areas precisely with selection brushes, modern palettes and shading controls.
Read the guide →Extract readable text from images
Extract English text from photos and screenshots, rotate images, adjust contrast and download an editable TXT file.
Read the guide →Design photo collages and custom memes
Choose a collage layout, frame each photo, style meme captions and export artwork with clear size limits.
Read the guide →Convert photos, inspect QR codes and open ZIPs privately
Practical tips for HEIC conversion, unit standards, QR screenshots, image privacy and bounded ZIP extraction.
Read the guide →Indian passport photo sizes: choose, crop and print privately
Understand passport, PAN, OCI and visa photo presets, prepare a natural-looking selfie, and export precise JPEGs or measured print sheets without uploading your photo.
Read the guide →Keep tables editable when converting images and PDFs to Word
Understand OCR, table boundaries, editable Word cells, and the checks that protect important numbers.
Read the guide →JPG, PNG, or WebP: choose an image format and size
Understand image transparency, resize modes, compression targets, and what to check before sharing converted pictures.
Read the guide →Creative & print32 guides
Pop-up Card Designer: design and export guide
Make printable step and window pop-up cards with measured cut and fold lines. Set the card size and personalize the message.
Read the guide →Paper Flower Template Maker: design and export guide
Generate measured petal, leaf and centre templates for layered paper flowers. Choose petal shapes, sizes and layer counts.
Read the guide →Envelope Designer: design and export guide
Create a custom envelope net with accurate dimensions, glue tabs and fold lines. Add a liner pattern and export a print sheet.
Read the guide →Origami Diagram Builder: design and export guide
Build your own folding diagrams with paper shapes, valley and mountain folds, arrows and notes. Export numbered instruction sheets.
Read the guide →Bracelet Pattern Designer: design and export guide
Plan a bead bracelet to a target length with repeating or mirrored colours. Export the bead order, quantities and string estimate.
Read the guide →Friendship Bracelet Knot Planner: design and export guide
Generate strand-by-strand knot charts for chevron, diagonal and diamond bracelets. Follow the numbered rows and colour inventory.
Read the guide →Necklace Layout Studio: design and export guide
Lay out a beaded necklace with symmetry, a clasp and an optional pendant. Review bead quantities and estimated material lengths.
Read the guide →Sticker Sheet Maker: design and export guide
Arrange photo or illustrated stickers on a measured print sheet. Choose shapes, borders, spacing and optional cut guides.
Read the guide →Product Label Designer: design and export guide
Design polished product labels with a brand, product details, logo and decorative styles. Export accurately sized label sheets.
Read the guide →Name Label Studio: design and export guide
Create personalized name labels in bulk with clean, playful or illustrated styles. Set physical sizes and print a ready-to-cut sheet.
Read the guide →Planner Sticker Creator: design and export guide
Make practical planner stickers for tasks, appointments, habits and celebrations. Customize labels, icons, colours and print sizes.
Read the guide →Pixel Art Editor: design and export guide
Draw crisp pixel art with a palette, pencil, eraser, fill and mirror tools. Save editable projects and export clean pixel-perfect artwork.
Read the guide →Sprite Sheet Animator: design and export guide
Draw and organize animation frames with onion skin and a live preview. Export sprite sheets, transparent GIFs and editable projects.
Read the guide →Tilemap Designer: design and export guide
Create pixel tiles and paint a game map with them. Export the finished map, tileset and a JSON map with tile identifiers.
Read the guide →Game Icon Maker: design and export guide
Design crisp game icons with original symbols, layered frames and custom colours. Export scalable SVG and PNG asset bundles.
Read the guide →Photo to Layered Paper Art: design and export guide
Turn a photo into layered tonal artwork with separate cut sheets. Adjust detail, layers and contrast, then export aligned layers.
Read the guide →Embossed Photo Effect: design and export guide
Give a photo a convincing embossed or engraved finish. Control the light direction, relief strength and material, then export the result.
Read the guide →Lithophane Preview & STL Maker: design and export guide
Convert a photo into a watertight flat lithophane STL with measured thickness. Inspect the height-map preview before exporting.
Read the guide →Design a private e-card or invitation
Create greetings and invitations with 500 templates across 50 occasions. Personalize text, add a photo and export a beautiful card.
Read the guide →Laser & CNC Cut Layout Maker guide
Arrange dimensioned circles and rectangles on a sheet. Export millimeter SVG cut paths with spacing and kerf allowance.
Read the guide →Box & Packaging Template Maker guide
Create a dimensioned folding-box net with cut lines, fold guides and a glue tab. Download SVG or an actual-size PDF.
Read the guide →Print Layout & Poster Tiling guide
Split an image across A4 or Letter pages at a chosen physical size, with overlap, trim guides and an assembly map.
Read the guide →Photo to Paint-by-Numbers in your browser
Turn a photo into numbered painting regions, a color key and a reference sheet.
Read the guide →Photo to Dot-to-Dot in your browser
Make numbered outline puzzles from a clear silhouette, with a solution sheet.
Read the guide →Custom Maze Maker in your browser
Generate solvable mazes in shapes and names, with printable solutions.
Read the guide →Cross-Stitch Pattern Maker in your browser
Create symbol charts, suggested thread colors and detailed printable sections.
Read the guide →Photo to Bead Art in your browser
Create bead and pixel-mosaic patterns with symbols, color counts and detail sheets.
Read the guide →Photo to Stencil in your browser
Make layered photo stencils with connected islands and SVG cut paths.
Read the guide →Photo Puzzle Sheet Maker in your browser
Create spot-the-difference puzzles, scrambled tiles and matching cards.
Read the guide →Photo to String Art in your browser
Calculate a circular pin template and a numbered thread sequence from a photo.
Read the guide →Paper Lantern Designer in your browser
Design an A4 lantern with photo or shape windows, fold lines and an assembly guide.
Read the guide →Photo to Coloring Page in your browser
Create printable outlines with detail, smoothing and line-weight controls.
Read the guide →Design & branding15 guides
CSS Gradient Generator: A Practical Guide
Design linear, radial and conic gradients with editable stops, then export CSS, PNG or supported SVG.
Read the guide →CSS Shadow Generator: A Practical Guide
Create layered box or text shadows with live preview, precise controls and ready-to-copy CSS.
Read the guide →Product Mockup Maker guide
Place artwork in phone, laptop, book, poster, shirt and mug mockups.
Read the guide →Seamless Pattern Maker: design and export guide
Design seamless repeats with straight, brick, half-drop and mirrored layouts. Export the repeat tile or a finished pattern.
Read the guide →Paper Texture Designer: design and export guide
Create cotton, kraft, linen and watercolor paper textures. Adjust grain, fibres and tone, then export your original surface.
Read the guide →Gradient Mesh Creator: design and export guide
Build soft multicolour mesh gradients with editable colour points. Move points, adjust diffusion and export backgrounds.
Read the guide →Geometric Background Maker: design and export guide
Generate geometric backgrounds with triangles, isometric tiles, waves or concentric arcs. Customize colours, density and seed.
Read the guide →Curved Text Designer: design and export guide
Place your text along a precise top or bottom arc. Adjust the radius, spacing and font, and export transparent artwork.
Read the guide →Monogram Maker: design and export guide
Design a personal monogram with interlocking, stacked, seal or diamond layouts. Set initials, fonts, borders and colours.
Read the guide →Word Cloud Studio: design and export guide
Arrange words by frequency or supplied weights into a balanced cloud. Choose a shape, palette and orientation, then export.
Read the guide →Decorative Initial Generator: design and export guide
Create a decorative initial with floral, art deco, geometric or illuminated borders. Export scalable lettering for your designs.
Read the guide →Font Pairing & Type Specimen Studio guide
Pair local fonts, tune the hierarchy and export a clean PNG specimen or an editable HTML reference.
Read the guide →Design cards for screens and print
Design front and back business cards with logos, QR codes, print sizes, bleed margins and PDF or PNG export.
Read the guide →Pick colors and check contrast
Pick exact image pixels, extract a color palette, copy HEX, RGB or HSL, and check WCAG text contrast.
Read the guide →Make website icons, strip photo metadata and check sale prices
Choose the right favicon sizes, understand JPEG privacy limits, and calculate discount and tax totals with transparent rounding.
Read the guide →Charts27 guides
Chart Studio: Examples & Data Guide
Find suitable charts for your data and create a downloadable chart collection.
Read the guide →Column Chart Maker: Examples & Data Guide
Compare categories with grouped columns and a clear zero baseline.
Read the guide →Bar Chart Maker: Examples & Data Guide
Compare ranked categories with horizontal bars and readable labels.
Read the guide →Stacked Column Chart Maker: Examples & Data Guide
Compare totals and their components with stacked columns.
Read the guide →Stacked Bar Chart Maker: Examples & Data Guide
Show category totals and components in horizontal stacks.
Read the guide →100% Stacked Chart Maker: Examples & Data Guide
Compare each category’s percentage composition on a common scale.
Read the guide →Line Chart Maker: Examples & Data Guide
Plot multiple series across numeric, date or ordered category axes.
Read the guide →Area Chart Maker: Examples & Data Guide
Show change over an ordered axis with clean area fills.
Read the guide →Stacked Area Chart Maker: Examples & Data Guide
Show how series contribute to changing totals.
Read the guide →Pie Chart Maker: Examples & Data Guide
Turn nonnegative category values into a labeled part-to-whole chart.
Read the guide →Donut Chart Maker: Examples & Data Guide
Create a proportion chart with a total in the center.
Read the guide →Scatter Plot Maker: Examples & Data Guide
Explore the relationship between two numeric columns.
Read the guide →Bubble Chart Maker: Examples & Data Guide
Compare three numeric dimensions with correctly scaled bubble areas.
Read the guide →Histogram Maker: Examples & Data Guide
Explore a numeric distribution with adjustable bins.
Read the guide →Box Plot Maker: Examples & Data Guide
Compare distributions using quartiles, medians, whiskers and outliers.
Read the guide →Heatmap Maker: Examples & Data Guide
Compare numeric columns across categories in a labeled color matrix.
Read the guide →Correlation Matrix Maker: Examples & Data Guide
Calculate pairwise Pearson correlations with sample counts.
Read the guide →Radar Chart Maker: Examples & Data Guide
Compare series across shared-scale nonnegative dimensions.
Read the guide →Waterfall Chart Maker: Examples & Data Guide
Show positive and negative contributions to a cumulative total.
Read the guide →Funnel Chart Maker: Examples & Data Guide
Compare ordered stage values and conversion from the first stage.
Read the guide →Treemap Maker: Examples & Data Guide
Compare proportions with rectangles sized by value.
Read the guide →Lollipop Chart Maker: Examples & Data Guide
Create a compact category comparison using stems and dots.
Read the guide →Slope Chart Maker: Examples & Data Guide
Compare two measurements per category with connected endpoints.
Read the guide →Dumbbell Chart Maker: Examples & Data Guide
Highlight the gap between two measurements for each category.
Read the guide →Waffle Chart Maker: Examples & Data Guide
Display category shares as a 100-cell percentage grid.
Read the guide →Candlestick Chart Maker: Examples & Data Guide
Plot validated open, high, low and close values by date or category.
Read the guide →Gantt Chart Maker: Examples & Data Guide
Map labeled tasks onto an ISO-date start and end timeline.
Read the guide →Data57 guides
SQL Data Explorer: methods and data limits
Query local records with joins, CTEs and window functions.
Read the guide →Parquet Viewer & Converter: methods and data limits
Inspect local Parquet metadata and export selected records.
Read the guide →SQLite Database Explorer: methods and data limits
Explore tables, indexes and foreign keys in a local database.
Read the guide →SQL Dump Extractor: methods and data limits
Extract literal INSERT records without executing backup SQL.
Read the guide →XML Data Extractor: methods and data limits
Extract repeated XML elements, attributes and nested values.
Read the guide →HTML Table Extractor: methods and data limits
Turn tables from saved HTML into clean records.
Read the guide →JSON Schema Validator: methods and data limits
Validate JSON against a supplied schema with precise error paths.
Read the guide →Chart-to-Data Digitizer: methods and data limits
Calibrate chart axes and capture plotted values from an image.
Read the guide →Survey Results Analyzer: methods and data limits
Analyze choices, Likert scores and responses by segment.
Read the guide →Time-Series Resampler: methods and data limits
Aggregate irregular observations into complete time bins.
Read the guide →Rolling Metrics & Growth Analyzer: methods and data limits
Calculate rolling metrics and period-over-period changes.
Read the guide →Time-Series Forecast Studio: methods and data limits
Compare simple forecasts with a chronological holdout.
Read the guide →Event Session Analyzer: methods and data limits
Turn timestamped events into sessions and engagement summaries.
Read the guide →Event Funnel Analyzer: methods and data limits
Measure ordered conversion steps from raw user events.
Read the guide →User Journey Explorer: methods and data limits
Discover observed paths, repeated actions and exits.
Read the guide →RFM Customer Segmentation: methods and data limits
Score recency, distinct orders and historical customer spend.
Read the guide →Market Basket Analyzer: methods and data limits
Find product pairs with support, confidence and lift.
Read the guide →Customer Lifetime Value Analyzer: methods and data limits
Measure observed customer value, repeat orders and acquisition cohorts.
Read the guide →Revenue Concentration & Pareto Analyzer: methods and data limits
Find revenue concentration and cumulative contribution thresholds.
Read the guide →Subscription Churn & Revenue Retention: methods and data limits
Reconcile customer MRR movements, churn and expansion.
Read the guide →Dataset Drift Detector: methods and data limits
Compare numeric and categorical distributions across two datasets.
Read the guide →Dataset Schema Change Checker: methods and data limits
Review observed field and type changes between JSON datasets.
Read the guide →Data Dictionary Builder: methods and data limits
Build an editable field dictionary with definitions, units and ownership.
Read the guide →Group Comparison Analyzer: methods and data limits
Compare numeric outcomes with confidence intervals and effect sizes.
Read the guide →Regression & Residual Analyzer: methods and data limits
Fit a numeric regression and inspect coefficients and residuals.
Read the guide →Numeric Scaling & Normalization: methods and data limits
Fit numeric transforms and apply saved parameters without refitting.
Read the guide →Categorical Data Encoder: methods and data limits
Create reusable one-hot or ordinal category mappings.
Read the guide →Class Balance & Resampling: methods and data limits
Inspect class counts and resample training records reproducibly.
Read the guide →Coordinate Format Converter: methods and data limits
Convert geographic coordinates and Web Mercator records.
Read the guide →GPX/KML Track Analyzer: methods and data limits
Inspect GPS tracks, distance and elevation with local exports.
Read the guide →Data Quality Profiler: methods and data limits
Inspect missingness, uniqueness, inferred types and numeric summaries.
Read the guide →Missing Value Cleaner: methods and data limits
Fill or remove missing values with a complete, reviewable change log.
Read the guide →Outlier Detector: methods and data limits
Flag unusual numeric values using IQR fences, z-scores or median deviation.
Read the guide →Data Validation Rules: methods and data limits
Check records against clear rules and separate passing and failing rows.
Read the guide →Group & Aggregate Data: methods and data limits
Summarize records by multiple keys with explicit aggregate measures.
Read the guide →Pivot & Unpivot Data: methods and data limits
Reshape long records into wide data, or turn wide columns into rows.
Read the guide →Data Filter Builder: methods and data limits
Keep or exclude records using typed, exportable filter conditions.
Read the guide →Column Split & Extract: methods and data limits
Extract structured pieces from a column while keeping the original values.
Read the guide →Data Value Mapper: methods and data limits
Replace codes and labels using a checked reference dictionary.
Read the guide →Fuzzy Record Matcher: methods and data limits
Compare approximate record names and review ranked match candidates.
Read the guide →Dataset Sampler & Splitter: methods and data limits
Create reproducible samples or train, validation and test partitions.
Read the guide →Data Anonymizer: methods and data limits
Replace selected identifiers consistently or redact sensitive columns.
Read the guide →Value Cluster Cleaner: methods and data limits
Find spelling and formatting variants, then apply only approved replacements.
Read the guide →Date Column Normalizer: methods and data limits
Convert date columns with explicit input formats and timezone rules.
Read the guide →Number Format Normalizer: methods and data limits
Parse localized numbers, currencies and percentages with explicit rules.
Read the guide →JSON Schema Inference: methods and data limits
Infer a reviewable JSON Schema from real example records.
Read the guide →GeoJSON Inspector: methods and data limits
Validate geographic features, inspect bounds and export cleaned GeoJSON.
Read the guide →Log Data Analyzer: methods and data limits
Summarize access logs by status, route, traffic and response time.
Read the guide →A/B Test Analyzer: methods and data limits
Compare conversion rates with intervals, uplift and adjusted significance.
Read the guide →Cohort Retention Analyzer: methods and data limits
Measure return activity by first-observed weekly or monthly cohorts.
Read the guide →CSV Editor: A Practical Guide
Edit CSV cells and headers, sort rows, undo changes and export CSV, XLSX or JSON locally.
Read the guide →CSV Merger & Joiner: A Practical Guide
Stack CSV files by matching headers or join two tables by key, with inner, left and full joins.
Read the guide →CSV Splitter: A Practical Guide
Split a CSV into row-sized parts or groups by a column, keeping headers in every downloaded file.
Read the guide →CSV Duplicate Remover: A Practical Guide
Remove duplicate rows using selected keys, keep first or last matches and review removed rows separately.
Read the guide →CSV Compare: A Practical Guide
Compare two CSV exports by unique key and report added, removed and changed records with before/after values.
Read the guide →Excel to CSV: A Practical Guide
Read XLSX worksheets locally, preview their data and export a selected sheet or all sheets as CSV.
Read the guide →CSV to Excel: A Practical Guide
Turn CSV or TSV files into a real XLSX workbook, with separate worksheets and safe text-preserving cells.
Read the guide →Business & work21 guides
Proforma Invoice Maker: inputs, review and export
Prepare a formal pre-sale invoice with shipment and payment details.
Read the guide →Credit Note Generator: inputs, review and export
Create itemized credit notes linked to an original invoice.
Read the guide →Delivery Note Generator: inputs, review and export
Prepare delivery records with quantities, condition notes and acceptance lines.
Read the guide →Sales Order Generator: inputs, review and export
Create customer order acknowledgments with pricing and fulfillment details.
Read the guide →Customer Statement Maker: inputs, review and export
Create dated customer statements with opening and running balances.
Read the guide →Payment Reminder Generator: inputs, review and export
Draft clear invoice reminders with balances, due dates and payment instructions.
Read the guide →SWOT Analysis Maker: inputs, review and export
Build a printable strategy matrix with strengths, weaknesses, opportunities and threats.
Read the guide →Business Model Canvas Maker: inputs, review and export
Map a business across nine connected model-building blocks.
Read the guide →Project Proposal Builder: inputs, review and export
Create formal project proposals with scope, milestones and commercial terms.
Read the guide →Offer Letter Generator: inputs, review and export
Draft structured employment offers with role, pay and acceptance details.
Read the guide →Receipt Maker: a practical guide
Record payments and create a clear, itemized receipt.
Read the guide →Purchase Order Maker: a practical guide
Create itemized purchase orders with delivery details.
Read the guide →Quotation Maker: a practical guide
Build polished estimates with validity dates and itemized pricing.
Read the guide →Packing Slip Maker: a practical guide
Prepare price-free packing slips with ordered and shipped quantities.
Read the guide →Inventory Tracker: a practical guide
Track stock movements, inventory value and reorder needs.
Read the guide →Meeting Agenda Maker: a practical guide
Turn timed discussion topics into an actionable meeting agenda.
Read the guide →Resume Builder: A Practical Guide
Build a clear resume with live templates, structured experience and PDF, DOCX or HTML export.
Read the guide →Cover Letter Builder: A Practical Guide
Format your cover letter with a matching header, clean typography and PDF, DOCX or HTML export.
Read the guide →Email Signature Maker: A Practical Guide
Create a clean email signature, copy formatted HTML and download a self-contained signature file.
Read the guide →Creator Media Kit & Rate Card guide
Build a polished media kit with audience metrics, portfolio and rates.
Read the guide →Create an invoice with clear totals
Create itemized invoices, quotes and receipts with currency, tax, discounts, logos and PDF export. Save editable JSON drafts.
Read the guide →Finance & accounting17 guides
Explore finance & accounting →
Accounts Receivable Aging: inputs, review and export
Review unpaid customer invoices by due date and aging bucket.
Read the guide →Accounts Payable Tracker: inputs, review and export
Plan supplier bill payments and review overdue obligations.
Read the guide →Bank Reconciliation Tool: inputs, review and export
Match bank and bookkeeping CSV transactions with an auditable review.
Read the guide →Profit & Loss Statement Maker: inputs, review and export
Summarize revenue, direct costs and expenses for a selected period.
Read the guide →Business Budget Planner: inputs, review and export
Compare business income and expense budgets with actual results.
Read the guide →Sales Commission Calculator: inputs, review and export
Calculate flat or tiered commissions with clear payout breakdowns.
Read the guide →Landed Cost Calculator: inputs, review and export
Allocate shipping, duties and import costs to product unit costs.
Read the guide →Product Cost Sheet Maker: inputs, review and export
Build batch cost sheets from materials, labor and manufacturing overhead.
Read the guide →ROAS & Advertising Profit Calculator: inputs, review and export
Compare ad returns, acquisition costs and profit after operating costs.
Read the guide →Business ROI & Payback Calculator: inputs, review and export
Evaluate investment cash flows with ROI, NPV and payback schedules.
Read the guide →Expense Report Maker: a practical guide
Organize expenses and prepare a reimbursement report.
Read the guide →Profit Margin Calculator: a practical guide
Price products with fees, costs and a target profit margin.
Read the guide →Break-Even Calculator: a practical guide
Find break-even sales and compare revenue with total costs.
Read the guide →Cash Flow Planner: a practical guide
Forecast monthly cash balances and spot funding gaps.
Read the guide →Income Tax Calculator: assumptions and results
Compare Indian old and new income-tax regimes, eligible deductions, marginal relief and a downloadable breakdown.
Read the guide →Understand investment projections
Project recurring investments or a lump sum with contribution timing, annual step-up, inflation and a CSV schedule.
Read the guide →Compare gross pay and clean lists privately
Understand salary-to-hourly assumptions and safely remove repeated lines, blank lines, spaces and tokens without uploading text.
Read the guide →Study & learning23 guides
Assignment Tracker: setup, method and export
Track deadlines, priorities, progress and remaining coursework.
Read the guide →Class Timetable Planner: setup, method and export
Build a weekly class schedule and spot overlapping sessions.
Read the guide →Reading Planner: setup, method and export
Turn books and reading goals into a manageable daily plan.
Read the guide →Mistake Notebook: setup, method and export
Organize practice mistakes, corrections and review dates.
Read the guide →Attendance Calculator: setup, method and export
Calculate attendance and the classes needed to reach a target.
Read the guide →Exam Marks & Negative Marking: setup, method and export
Calculate section scores with penalties and target scenarios.
Read the guide →Significant Figures Calculator: setup, method and export
Count and round significant digits with clear decimal rules.
Read the guide →Scientific Notation Calculator: setup, method and export
Convert and calculate scientific and engineering notation.
Read the guide →Chemical Equation Balancer: setup, method and export
Balance chemical formulas and inspect atom conservation.
Read the guide →Spelling Practice: setup, method and export
Practice your own word list with dictation and mistake review.
Read the guide →Multiplication Trainer: setup, method and export
Practice times tables with targeted rounds and mistake review.
Read the guide →Research Source Organizer: setup, method and export
Build a source matrix with evidence, notes and credibility checks.
Read the guide →Essay Outline Builder: setup, method and export
Structure a thesis, arguments, evidence and counterarguments.
Read the guide →Lab Report Builder: setup, method and export
Structure experiments, observations, results and conclusions.
Read the guide →Quiz Maker: a practical guide
Create multiple-choice quizzes and take them with instant feedback.
Read the guide →Spaced Repetition Trainer: a practical guide
Practice question-and-answer cards with a due-date review queue.
Read the guide →Citation Generator: a practical guide
Format manual webpage and book references in APA, MLA or Chicago.
Read the guide →Weighted Grade Calculator: a practical guide
Calculate a weighted course grade and the remaining target.
Read the guide →GPA Calculator: a practical guide
Calculate credit-weighted GPA with a customizable grade scale.
Read the guide →Final Grade Calculator: a practical guide
Find the final-exam score needed for your target course grade.
Read the guide →Exam Study Planner: a practical guide
Spread topic revision across available days before an exam.
Read the guide →Cornell Notes Maker: a practical guide
Build printable Cornell notes with cues, notes and a summary.
Read the guide →Mind Map Maker: a practical guide
Turn an indented outline into a clean, exportable mind map.
Read the guide →Teaching & worksheets12 guides
Explore teaching & worksheets →
Cloze Worksheet Maker: setup, method and export
Create gap-fill worksheets and separate answer keys from text.
Read the guide →Matching Worksheet Maker: setup, method and export
Build shuffled matching exercises with separate answer keys.
Read the guide →Crossword Maker: setup, method and export
Create printable crosswords from your own answers and clues.
Read the guide →Math Worksheet Generator: setup, method and export
Generate arithmetic practice sheets with checked answer keys.
Read the guide →Rubric Maker: setup, method and export
Create weighted assessment rubrics with transparent scoring.
Read the guide →Lesson Plan Builder: setup, method and export
Plan objectives, timed activities, assessment and differentiation.
Read the guide →Word Search Maker: a practical guide
Create printable word-search puzzles with a checked solution key.
Read the guide →Handwriting Worksheet Maker: design and export guide
Create personalized tracing and copying worksheets with guided writing lines. Choose text, type style and practice density.
Read the guide →Flashcard Designer: design and export guide
Turn question-and-answer pairs into coordinated flashcards. Export matched fronts and backs with duplex-aware page layouts.
Read the guide →Custom Board Game Maker: design and export guide
Design a printable board game with numbered spaces, custom events and player tokens. Choose a path and export a complete play kit.
Read the guide →Story Dice Generator: design and export guide
Generate printable story dice with original vector symbols and measured cube nets. Choose themes, sizes and a repeatable random seed.
Read the guide →Personalized Activity Book Maker in your browser
Combine your photos, coloring, dots, mazes, tracing and puzzles in one print PDF.
Read the guide →Files & QR codes2 guides
Text11 guides
Find & Replace Text guide
Find text or regex matches and replace them with capture-group support.
Read the guide →List Compare guide
Find shared, missing and unique entries across two lists.
Read the guide →Text to Table guide
Convert delimited text or JSON into CSV, TSV, Markdown and JSON tables.
Read the guide →Readability Analyzer guide
Check English reading ease, grade estimates and reading time.
Read the guide →Text Sorter guide
Sort lines naturally, alphabetically, numerically or by length.
Read the guide →Text Chunker guide
Split text by characters, words or paragraphs, with optional overlap.
Read the guide →URL Slug Generator guide
Create bulk Unicode or ASCII slugs with prefixes and duplicate handling.
Read the guide →Text Wrap Formatter guide
Wrap text to a chosen width with indentation and paragraph controls.
Read the guide →Write and export Markdown safely
Edit Markdown with tables, lists and code blocks. Navigate headings and export Markdown or a self-contained HTML document.
Read the guide →Count text, create passwords and compare loan repayments
Understand Unicode word counts, random passphrase choices and reducing-balance loan schedules.
Read the guide →Create static codes, convert text cases and compare changes privately
Practical guidance for scannable QR/barcodes, Unicode case conversion, JSON normalization and safe text comparisons without uploading inputs.
Read the guide →Calendar31 guides
Annual Leave Planner: practical workflow and limits
Calculate leave days, allowance usage and the remaining personal balance.
Read the guide →Team Leave & Coverage Calendar: practical workflow and limits
Visualize team absences and flag dates below your staffing target.
Read the guide →Custom Holiday Calendar Builder: practical workflow and limits
Build personal or company holiday calendars with explicit observance rules.
Read the guide →Birthday & Anniversary Calendar: practical workflow and limits
Create an annual celebration calendar with ages and leap-day handling.
Read the guide →Recurring Bill Calendar: practical workflow and limits
Map recurring bills onto dates and review planned monthly totals.
Read the guide →Payday Calendar Generator: practical workflow and limits
Generate weekly, biweekly, semimonthly or monthly pay dates.
Read the guide →School Term & Break Calendar: practical workflow and limits
Count teaching days across terms, breaks and custom closure dates.
Read the guide →Shared Parenting Calendar: practical workflow and limits
Plan alternating overnight care and explicit date exceptions.
Read the guide →Home Routine Calendar: practical workflow and limits
Schedule household tasks at day, week or month intervals.
Read the guide →Weekly Meal Calendar: practical workflow and limits
Arrange recurring meals and preparation notes on a weekly calendar.
Read the guide →Habit Calendar & Streak Tracker: practical workflow and limits
Track scheduled habits, completion dates and honest streaks.
Read the guide →4-4-5 Fiscal Calendar Builder: practical workflow and limits
Create 4-4-5, 4-5-4 or 5-4-4 accounting periods with an optional 53rd week.
Read the guide →Sprint Calendar & Capacity Planner: practical workflow and limits
Lay out sprint boundaries and calculate working-day capacity.
Read the guide →Meeting Poll Results Analyzer: practical workflow and limits
Rank candidate meeting times from participant availability responses.
Read the guide →Global Meeting Time Finder: practical workflow and limits
Find UTC slots that fit participants’ local working windows.
Read the guide →Resource Booking Calendar: practical workflow and limits
Organize room or equipment bookings and detect double-booked resources.
Read the guide →CSV & JSON to Calendar: practical workflow and limits
Turn structured event rows into validated importable calendar files.
Read the guide →Calendar Free-Time Finder: practical workflow and limits
Find genuinely open windows between imported busy events.
Read the guide →Calendar Time Audit: practical workflow and limits
Analyze calendar hours by category and separate overlap from occupied time.
Read the guide →Calendar Privacy Cleaner: practical workflow and limits
Replace event text with Busy while preserving the dates you choose to share.
Read the guide →Calendar Time Shifter: practical workflow and limits
Shift a calendar by local days or absolute minutes with DST validation.
Read the guide →Calendar Splitter: practical workflow and limits
Split calendar occurrences into month or source groups and download a ZIP.
Read the guide →ICS Calendar Health Check: practical workflow and limits
Inspect calendar structure, required fields and supported event semantics.
Read the guide →ISO Week Calendar Converter: practical workflow and limits
Resolve an ISO week into Monday–Sunday dates and convert a date back to its week.
Read the guide →Calendar File Viewer & Editor guide
Open ICS files, browse and edit events, remove duplicates and export a clean date range.
Read the guide →Printable Calendar Designer guide
Design monthly or yearly calendars with notes, photos and week numbers. Export PNG, SVG or PDF.
Read the guide →Shift Roster Planner guide
Build rotating team schedules with custom shifts, individual cycle offsets and calendar exports.
Read the guide →Recurring Date Generator guide
Generate repeating dates, nth weekdays or last working days, with exclusions and calendar export.
Read the guide →Availability Calendar Maker guide
Select dates, build available time slots and export a clear calendar, CSV or ICS file.
Read the guide →Deadline & Milestone Planner guide
Plan stages backward from a deadline, skipping chosen weekends and holidays.
Read the guide →Calendar Merger & Conflict Finder guide
Combine local ICS files, remove exact duplicates and review overlapping events before export.
Read the guide →Time & date10 guides
Work Hours & Timesheet Calculator guide
Total shifts, unpaid breaks, overnight work and overtime, with weekly summaries and pay estimates.
Read the guide →Focus Timer guide
Run custom focus and break cycles with clear controls, optional sounds and a session report.
Read the guide →Multi-Countdown Dashboard guide
Track up to twelve named deadlines across time zones in one compact dashboard.
Read the guide →Stopwatch & Lap Analyzer guide
Capture laps, compare split times, undo the last lap and export a complete timing report.
Read the guide →Daily Time-Blocking Planner guide
Arrange tasks around fixed appointments, split long tasks when needed and export a realistic day plan.
Read the guide →Event Run-of-Show Builder guide
Build a timed event schedule with speakers, transitions, fixed anchors and a live cue view.
Read the guide →Freelance Time & Billing Tracker guide
Track project time, add manual entries and calculate client totals with rounding and exportable reports.
Read the guide →Travel Itinerary Timeline guide
Organize journeys, stays and activities across time zones, with elapsed times and connection checks.
Read the guide →Count days, working days and birthdays privately
Understand date differences, leap years, live age, calendar arithmetic and approximate zodiac views without uploading personal dates.
Read the guide →Convert time zones without daylight-saving surprises
Compare city-based time zones, check dates and offsets, and resolve repeated or skipped local times.
Read the guide →Health & wellness14 guides
BMI Calculator: methods and privacy
Calculate adult BMI with metric or imperial measurements, a visual reference scale and a private downloadable summary.
Read the guide →Calorie Needs Calculator: methods and privacy
Estimate resting and maintenance energy with the Mifflin–St Jeor equation and compare activity assumptions. Adult estimates, not a diet prescription.
Read the guide →Macro Planner: methods and privacy
Translate a chosen calorie budget into carbohydrate, protein and fat grams with adjustable proportions and per-meal planning.
Read the guide →Protein Intake Planner: methods and privacy
Convert a chosen grams-per-kilogram factor into daily protein and per-meal amounts. Compare adult reference and activity ranges.
Read the guide →Body Fat Estimate Calculator: methods and privacy
Estimate body-fat percentage from tape measurements with metric or imperial units, measurement guidance and a private summary.
Read the guide →Heart Rate Zone Calculator: methods and privacy
Calculate moderate and vigorous exercise ranges from age or a known maximum heart rate, with a clear visual zone chart.
Read the guide →Sleep Schedule Planner: methods and privacy
Plan bedtime or wake-up time, allow time to fall asleep and build a weekly schedule with private calendar and summary exports.
Read the guide →Guided Breathing Studio: methods and privacy
Follow a calm visual breathing guide with adjustable inhale and exhale timing, short sessions, optional sound and reduced-motion support.
Read the guide →Hydration Planner & Tracker: methods and privacy
Set your own fluid goal, log drinks, undo entries and export a private session log. Goals are personal settings, not prescribed fluid needs.
Read the guide →Workout Interval Timer: methods and privacy
Build timed work and rest rounds with warm-up, cool-down, optional sound cues and a downloadable interval schedule.
Read the guide →Eye Break Timer: methods and privacy
Schedule screen breaks with a 20-20-20 preset, a clear countdown and optional sound cues. Customize focus time and break length.
Read the guide →Movement Break Timer: methods and privacy
Plan regular movement or position-change breaks with adjustable focus blocks, gentle prompts and optional sound cues.
Read the guide →Pregnancy Calculator: assumptions and results
Estimate due dates, gestational weeks and trimester milestones using a period date, conception, IVF transfer or clinician-set date.
Read the guide →Ovulation Calculator: assumptions and results
Estimate ovulation and fertile windows, compare projected cycles and download a private calendar. Not contraception advice.
Read the guide →Calculators1 guides
Developer42 guides
Regular Expression Tester: examples and practical limits
Test JavaScript patterns and inspect match positions and capture groups.
Read the guide →JSONPath Explorer: examples and practical limits
Select JSON values with paths, indexes, wildcards and recursive descent.
Read the guide →JSON Pointer Resolver: examples and practical limits
Resolve RFC 6901 pointers and show the exact selected JSON value.
Read the guide →Structural JSON Diff: examples and practical limits
Compare JSON by structure and inspect added, removed and changed paths.
Read the guide →JSON Merge Patch: examples and practical limits
Apply RFC 7396 merge patches and preview the resulting document.
Read the guide →JSON Patch Processor: examples and practical limits
Apply RFC 6902 add, remove, replace, move, copy and test operations.
Read the guide →JSON to TypeScript: examples and practical limits
Infer TypeScript types from sample JSON with nested arrays and unions.
Read the guide →JSON Lines Converter: examples and practical limits
Convert newline-delimited JSON to arrays and arrays to JSON Lines.
Read the guide →JSON Flatten & Unflatten: examples and practical limits
Flatten JSON into reversible RFC 6901 pointer maps and rebuild documents.
Read the guide →JSON to SQL INSERT: examples and practical limits
Generate escaped SQL INSERT statements from JSON records.
Read the guide →URL Inspector: examples and practical limits
Inspect URL components, duplicate query parameters and decoded fields.
Read the guide →Query String Builder: examples and practical limits
Build and parse query strings while preserving duplicate parameters.
Read the guide →HTML Entity Encoder & Decoder: examples and practical limits
Encode HTML text safely or decode numeric and common named entities.
Read the guide →JSON String Escape & Unescape: examples and practical limits
Escape plain text as a JSON string or recover its original characters.
Read the guide →Unicode Character Inspector: examples and practical limits
Inspect Unicode code points, UTF-8 bytes and invisible characters.
Read the guide →Integer Base Converter: examples and practical limits
Convert signed integers between bases 2–36 without floating-point loss.
Read the guide →UTF-8, Hex & Binary Converter: examples and practical limits
Convert text and bytes between UTF-8, hexadecimal and binary.
Read the guide →Unix Permission Calculator: examples and practical limits
Convert octal permissions to symbolic bits and review owner, group and other access.
Read the guide →Semantic Version Comparator: examples and practical limits
Compare strict semantic versions with prerelease precedence and build metadata.
Read the guide →Environment File Inspector: examples and practical limits
Validate environment-file assignments and inspect duplicate keys and quoting.
Read the guide →Gitignore Builder: examples and practical limits
Combine curated ignore rules for common languages, editors and local secrets.
Read the guide →Dockerfile Starter Builder: examples and practical limits
Generate a multi-stage Node or Python Dockerfile and matching ignore rules.
Read the guide →HTTP Status Code Explorer: examples and practical limits
Find common HTTP response codes, meanings and handling guidance.
Read the guide →MIME Type Explorer: examples and practical limits
Look up common file extensions and media types with format notes.
Read the guide →CSS Unit Converter: examples and practical limits
Convert CSS lengths using explicit root, parent and viewport dimensions.
Read the guide →Responsive Aspect Ratio Calculator: examples and practical limits
Reduce an aspect ratio and calculate responsive dimensions at a target width.
Read the guide →Cubic Bézier Timing Builder: examples and practical limits
Create CSS easing curves and inspect sampled animation progress.
Read the guide →JSON to HTML Table: examples and practical limits
Build an accessible escaped HTML table from JSON records.
Read the guide →Text Data URI Converter: examples and practical limits
Create UTF-8 text data URIs or decode bounded Base64 and percent-encoded payloads.
Read the guide →Robots.txt Builder: examples and practical limits
Generate robots.txt directives from explicit crawler rules and sitemap URLs.
Read the guide →Metadata Tag Builder: examples and practical limits
Generate escaped canonical, description, Open Graph and social-card tags.
Read the guide →JavaScript Formatter: examples and practical limits
Format JavaScript with a syntax-aware parser and consistent indentation.
Read the guide →TypeScript Formatter: examples and practical limits
Format TypeScript with a syntax-aware parser and consistent indentation.
Read the guide →HTML Formatter: examples and practical limits
Format HTML with a syntax-aware parser and consistent indentation.
Read the guide →CSS Formatter: examples and practical limits
Format CSS with a syntax-aware parser and consistent indentation.
Read the guide →GraphQL Formatter: examples and practical limits
Format GraphQL with a syntax-aware parser and consistent indentation.
Read the guide →YAML Formatter: examples and practical limits
Format YAML with a syntax-aware parser and consistent indentation.
Read the guide →Markdown Formatter: examples and practical limits
Format Markdown with a syntax-aware parser and consistent indentation.
Read the guide →UUID Generator: a practical guide
Create RFC 9562 UUID v4 identifiers and inspect UUID structure.
Read the guide →Choose the right encoding format
Encode or decode UTF-8 text, Base64URL and URL escapes, with binary Base64 file support and strict validation.
Read the guide →Choose Git commands with confidence
Find commands for branches, commits, remotes and recovery, with shell quoting and clear consequences.
Read the guide →Work with text, JSON, schedules, and DNS safely
Practical checks for precise JSON formatting, cron schedules, calculations, and public DNS results.
Read the guide →Web & network28 guides
DNS Record Inspector: practical guide
Look up public DNS records and inspect resolver answers.
Read the guide →DNS Zone File Validator: practical guide
Check common BIND zone records and configuration conflicts.
Read the guide →SPF Record Analyzer: practical guide
Review SPF mechanisms, IP ranges and DNS lookup limits.
Read the guide →DMARC Record Studio: practical guide
Build and check a DMARC DNS policy with clear tag explanations.
Read the guide →DMARC Aggregate Report Analyzer: practical guide
Turn aggregate XML reports into authentication and sender summaries.
Read the guide →HAR Network Analyzer: practical guide
Inspect request waterfalls, failures, payloads and network timing.
Read the guide →HAR Privacy Sanitizer: practical guide
Remove sensitive HAR payloads and share a cleaner diagnostic capture.
Read the guide →HTTP Cache Debugger: practical guide
Explain freshness, validators and browser versus shared-cache behavior.
Read the guide →Web Compression Inspector: practical guide
Measure real gzip and deflate savings for your UTF-8 web assets.
Read the guide →Robots.txt Rule Tester: practical guide
Test crawl permissions with matching rules and user-agent precedence.
Read the guide →XML Sitemap Studio: practical guide
Build or inspect XML sitemaps with duplicate and URL checks.
Read the guide →Hreflang Cluster Studio: practical guide
Generate reciprocal language alternates and audit page clusters.
Read the guide →Redirect Map Auditor: practical guide
Find redirect loops, conflicts and chains before a site migration.
Read the guide →Canonical URL Auditor: practical guide
Review canonical targets, chains and indexability conflicts from crawl data.
Read the guide →Structured Data Studio: practical guide
Create editable JSON-LD for organizations, articles, products and FAQs.
Read the guide →Web App Manifest Studio: practical guide
Build or validate a web app manifest and preview its launch identity.
Read the guide →RSS & Atom Feed Inspector: practical guide
Read feed metadata, entries, dates and duplicate identifiers.
Read the guide →User-Agent Decoder: practical guide
Decode common browser, operating-system and crawler markers.
Read the guide →IP Range & CIDR Aggregator: practical guide
Merge address ranges, subtract exclusions and export minimal CIDRs.
Read the guide →Bandwidth & Transfer Planner: practical guide
Plan transfer time, connection capacity and bandwidth-delay product.
Read the guide →Security Headers Analyzer: workflow, verification and limits
Review pasted HTTP response headers and practical hardening gaps.
Read the guide →CSP Builder & Analyzer: workflow, verification and limits
Build and inspect a Content Security Policy without contacting a site.
Read the guide →Permissions Policy Builder: workflow, verification and limits
Create explicit browser-feature permission policies.
Read the guide →Cookie Security Analyzer: workflow, verification and limits
Inspect Set-Cookie flags, scope and browser prefix requirements.
Read the guide →CORS Policy Tester: workflow, verification and limits
Simulate CORS decisions from supplied request and response settings.
Read the guide →HTTPS Redirect Rule Builder: workflow, verification and limits
Generate host-validated HTTP-to-HTTPS redirect configurations.
Read the guide →IPv4 & IPv6 CIDR Calculator: workflow, verification and limits
Calculate network boundaries, address counts and child subnets.
Read the guide →IP Allowlist Rule Tester: workflow, verification and limits
Simulate ordered allow and deny rules against supplied addresses.
Read the guide →Privacy & security15 guides
Checksum Manifest Verifier: workflow, verification and limits
Match multiple local files against a SHA-256 checksum manifest.
Read the guide →File Type & Signature Inspector: workflow, verification and limits
Compare common file signatures with the filename extension.
Read the guide →Local Secret Scanner: workflow, verification and limits
Find likely credentials and produce a masked sharing copy.
Read the guide →PII Finder & Masker: workflow, verification and limits
Find common identifiers and mask them before sharing text.
Read the guide →Email Header Analyzer: workflow, verification and limits
Read email routing and reported authentication from pasted headers.
Read the guide →URL Security Inspector: workflow, verification and limits
Inspect link structure, embedded credentials and redirect parameters.
Read the guide →Domain Lookalike Checker: workflow, verification and limits
Compare domains for Unicode, mixed-script and visual similarity clues.
Read the guide →Privacy Notice Draft Builder: workflow, verification and limits
Draft a notice from your actual data handling and contact details.
Read the guide →Incident Response Checklist: workflow, verification and limits
Create a response task list with owners, status and evidence notes.
Read the guide →File Encryption: a practical guide
Encrypt or unlock a file locally with password-based AES-GCM.
Read the guide →Private Text Encryption: a practical guide
Lock a private message in an authenticated password-encrypted envelope.
Read the guide →File Checksum Verifier: a practical guide
Calculate file hashes and check them against an expected checksum.
Read the guide →Password Strength Checker: a practical guide
Check password length, common patterns and predictable sequences locally.
Read the guide →URL Privacy Cleaner: a practical guide
Remove common tracking parameters without opening the destination.
Read the guide →Text Redactor guide
Mask contact details and custom terms, then review the redacted text.
Read the guide →Cryptography & authentication15 guides
Explore cryptography & authentication →
TLS Certificate Inspector: workflow, verification and limits
Decode a PEM certificate and inspect validity, names and fingerprints.
Read the guide →CSR Decoder: workflow, verification and limits
Inspect a certificate request and its embedded public-key information.
Read the guide →Public Key Inspector: workflow, verification and limits
Inspect SPKI public keys, algorithms and SHA-256 fingerprints.
Read the guide →RSA Message Encryption: workflow, verification and limits
Encrypt or unlock a short message with RSA-OAEP and supplied keys.
Read the guide →JWK & PEM Converter: workflow, verification and limits
Convert supported RSA and EC key formats with explicit key purpose.
Read the guide →SSH Public Key Fingerprint: workflow, verification and limits
Calculate SHA-256 fingerprints from OpenSSH public keys.
Read the guide →JWT Signature Verifier: workflow, verification and limits
Verify JWT signatures and evaluate an explicit claim policy.
Read the guide →HOTP Counter Code Generator: workflow, verification and limits
Generate counter-based one-time codes from a Base32 secret.
Read the guide →Base32 Encoder & Decoder: workflow, verification and limits
Convert UTF-8 text or HEX bytes to strict RFC 4648 Base32.
Read the guide →Subresource Integrity Generator: workflow, verification and limits
Create SRI hashes and escaped script or stylesheet snippets.
Read the guide →Text Hash Generator: a practical guide
Hash UTF-8 text with SHA-256, SHA-384, SHA-512 or legacy SHA-1.
Read the guide →HMAC Generator: a practical guide
Create and verify keyed message authentication codes locally.
Read the guide →TOTP Authenticator: a practical guide
Generate time-based one-time codes from a Base32 secret.
Read the guide →Random Key Generator: a practical guide
Generate cryptographically random API keys and tokens in batches.
Read the guide →Read tokens, flatten JSON and translate Unix time privately
Understand unverified JWT claims, spreadsheet-safe JSON-to-CSV exports and precise timestamp conversion with explicit zones and daylight-saving handling.
Read the guide →Written for the tools available on Edtoolkits. Meet Team Edtoolkits or send feedback about a workflow.