Timestamp Generator
Turn a list of chapter titles and times into a correctly formatted timestamp block that YouTube will read as chapters.
Why chapters fail to appear
YouTube does not tell you when your chapters are rejected — they simply do not show up, and most creators assume the feature is broken. It almost never is. Chapters need a timestamp at exactly 0:00, at least three of them, and ten seconds or more between each one. Break any of those and the whole block is silently ignored, including the parts that were fine.
Format the way YouTube reads it
The timestamp has to come first on the line, followed by the title. A line reading "Intro — 0:00" will not register, which is a common failure when chapters are written by hand from notes. Paste whatever you have here and it comes back in the right shape.
Chapter titles are search text
Chapters appear in search results and on the progress bar, so the titles do real work. "Part 2" tells a viewer nothing; "How much a 10-minute video costs" tells them whether to skip ahead. Keep them short enough to read on a phone — around forty characters is the practical limit.
Common questions
Why are my chapters not showing on YouTube?
Almost always one of three rules: the list must start at 0:00, there must be at least three timestamps, and every chapter must run for at least ten seconds. This tool checks all three and tells you which one failed.
What timestamp formats can I paste in?
Anything readable — 1:23, 01:23, 0:01:23, 1.23, 1m23s, and lines where the time comes after the title. Bullets, dashes and numbering are stripped automatically. The output is always the format YouTube expects.
Does the order of my lines matter?
Not if you leave sorting on. YouTube requires ascending order, so the tool sorts by time for you. Turn sorting off if you want to see the order exactly as you pasted it.
Where do the chapters go?
Into the video description. Paste the block anywhere in it — most creators put it after the first paragraph so the opening lines still work as the search snippet.
Is anything uploaded?
No. The text is parsed in your browser and never sent anywhere. Nothing survives closing the tab.