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Timestamp Generator
Only know how long each part is? Compute the times for you.
YouTube · Free tool
Chapter Formatter
Paste rough chapter notes — bullets, numbers, timestamps anywhere in the line — and get clean, YouTube-accepted chapter lines, checked against every rule that makes them appear.
Format your chapters
Timestamps can come first (
0:00 Intro) or last (Intro 0:00), with or without brackets. Bullets and numbering are stripped.
Clean chapters
Paste notes on the left to format chapters.
How it works
How the chapter formatter works
Paste anything
Notes from your editor, phone, or a comment section — bullets, numbers, parentheses, timestamps at the start or end. Every line is parsed individually.
Normalized to YouTube's format
Each chapter becomes 0:00 Title, zero-padded to 00:00 for perfect consistency. Unparseable lines are reported as skipped — never silently dropped.
Rule-checked
Starts at 0:00, at least 3 chapters, ascending order, 10-second minimums — each rule is verified so your chapters actually show up on YouTube.
Questions
Chapter formatter FAQ
What format does YouTube use for chapters?
One line per chapter with the timestamp first, like '0:00 Intro'. The list must start at 0:00, contain at least 3 timestamps in ascending order, and every chapter must be at least 10 seconds long. The formatter normalizes your notes to exactly this format.
What kinds of messy notes can the formatter handle?
Timestamps at the start or the end of the line, times wrapped in brackets or parentheses, and leading bullets ('-', '•', '#') or numbering ('1.', '2.') are all cleaned automatically. Lines it can't parse are listed as skipped so nothing silently disappears.
Why aren't my chapters showing on YouTube?
The most common causes are a list that doesn't start at 0:00, fewer than 3 chapters, or chapters shorter than 10 seconds. The formatter checks all three and reports exactly which rule fails.
Is the chapter formatter free?
Yes. Every tool on AntigleForge is free and runs entirely in your browser. Nothing is uploaded, stored, or processed on a server.