A LITTLE HELP FOR YOUR NEXT TASK
YouTube Chapter Builder
Mark, validate and export video chapters with precise timestamps.
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.
Preparing video studio…
How to use YouTube Chapter Builder
- Add chapter titles and timestamps, import timestamped text/CSV/JSON, or load a video and mark moments while watching.
- Review the timeline checks: first chapter at 00:00, at least three chapters and at least ten whole seconds per chapter. Supply the full duration to check the final chapter too.
- Sort when appropriate, copy the timestamped list or download TXT, CSV or JSON. Platform eligibility and chapter display still depend on YouTube.
What are the limits of YouTube Chapter Builder?
Manual chapters normally need a 00:00 start, at least three chapters and at least 10 seconds per chapter. Final chapter length is checked only when duration is supplied. Platform eligibility and automatic chapter display are not guaranteed. CSV, JSON and timestamped lines accepted, up to 100 chapters. Files and inputs stay in browser memory. Only the shared media engine is downloaded when needed; no media is uploaded. Exported files contain the content you select. Refreshing clears this workspace.