YouTube Timestamps Generator, Formatter & Validator
Paste your chapter list below. We'll check it againstYouTube's official chapter rules— at least 3 timestamps, the first one at 00:00, ascending order, and 10 seconds minimum per chapter — fix what can be fixed, and give you a clean list ready to paste into your description.
Input
0 characters
🔒 Processed locally. Your data never leaves your browser.
Validation
Paste your chapters to see validation results here.
Timeline
Your chapter timeline will appear here once you add at least one timestamp.
Output
Your formatted, YouTube-ready chapter list will appear here.
Related guides
- YouTube Chapters Format
Official formatting rules, every accepted style, and copy-paste templates.
- Why Aren't My YouTube Chapters Showing Up?
The 7 real reasons chapters silently fail, and how to fix each one.