A LITTLE HELP FOR YOUR NEXT TASK
JSON Formatter & Validator
Format, validate and explore JSON.
Private by design
Your inputs stay on your device and are not sent to our servers. Optional usage analytics does not receive your files or tool inputs.
How to use JSON Formatter & Validator
- Paste JSON or open a JSON file, up to 1 MB.
- Format, minify, or decode a JSON-string layer. Use the tree, search, breadcrumbs, and keyboard arrows to navigate.
- Review validation warnings and copy the selected value/path or download JSON.
What are the limits of JSON Formatter & Validator?
Strict JSON only: no comments or trailing commas. Duplicate keys and unsafe integer values produce warnings. Formatting and minifying preserve numeric literals rather than rounding them. Tree rendering is paged; maximum depth 128 and 50,000 nodes. Unstringify only decodes valid JSON string layers containing JSON. No code is evaluated or uploaded.