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Video · FREE TOOL
YouTube Chapter Validator.
Check timestamp order, opening time, and chapter length before pasting into a video description.
YOUR WORKSPACERuns in your browser
One chapter per line. Use mm:ss or hh:mm:ss, followed by a clear title.
CHAPTER REVIEW0 chapters
Your cleaned chapter list will appear here.
The last chapter must still fit your actual video length.
HOW TO USE IT
Make the result useful
A chapter list is easy to mistype. YouTube’s own guidance requires an opening timestamp at 00:00, at least three timestamps in ascending order, and chapters at least 10 seconds long.
A simple workflow
- Paste timestamps and titles, one per line.
- Review errors for missing titles, order, or short sections.
- Copy the cleaned list into your video description.
Example in context
00:00 Introduction, 00:42 Tools, and 02:10 The first lighting setup form a valid sequence if each section meets the minimum duration.
What to check yourself
A valid list may still need the relevant YouTube account features, and the final chapter duration depends on the video’s end time.
Platform reference: official documentation ↗