YouTube Chapter Generator turns timestamp and title lines into clean chapter markup ready for descriptions. It helps creators, editors, and documentation writers format videos faster.
Turn timestamp and title lines into clean YouTube chapter markup. Everything runs locally in this tab.
00:00 Intro 01:25 Setup 04:10 Results
Yes. The tool is free and runs directly in your browser with no account required.
No. It only processes text or URLs you paste into the browser. It does not log in, scrape, or download third-party content.
It is best for cleaning up a rough list of timestamps and titles into the exact MM:SS Chapter Name (or HH:MM:SS) format YouTube expects in a description.
One chapter per line, each starting with a timestamp (MM:SS or HH:MM:SS) followed by a space and the chapter title, like '01:25 Setup' or '1:02:10 Q&A'.
A line that doesn't start with a recognizable MM:SS or HH:MM:SS pattern is kept as a chapter title but given a 00:00 placeholder timestamp — it does not calculate or guess a time for it. Fix the timestamp manually on any line that shows 00:00 unexpectedly.
No. It reformats whatever timestamps you provide into consistent spacing; it does not check whether your first chapter starts at 0:00, whether chapters are in ascending order, or whether each chapter is at least 10 seconds long — all of which YouTube requires to actually display chapters.
No. You need to supply the timestamps yourself (for example, from your editing timeline). The tool only reformats and cleans up lines you already have timestamps for.
Paste the generated lines directly into your YouTube video description, ideally right after the main description text. YouTube automatically turns a properly formatted timestamp list into clickable chapters once the video is published or updated.
