What timing rules does the tool check?

The list starts at 00:00, has at least three chapters, uses ascending times and leaves ten seconds between chapters. Passing these checks does not guarantee YouTube enables chapters for a video. The tool is free and needs no account.

Free local tool

YouTube timestamp generator

Mark topics in a local video and copy a chapter list.

Load a video to markPress M while it plays. Your file stays local.

You choose the boundaries and titles yourself. This tool does not fetch YouTube links or generate chapter names with AI.

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How to use it

Play your file and press M at a topic change. Name the markers, check the timing warnings and copy the list into your video description.

What timing rules does the tool check?: The list starts at 00:00, has at least three chapters, uses ascending times and leaves ten seconds between chapters. Passing these checks does not guarantee YouTube enables chapters for a video. The tool is free and needs no account.