Timestamp Marker

Viewer + timestamps in one file. Open a YouTube link, watch a local video, add markers, write notes, and export a clean timestamp list.

Viewer

Fallback without error 153
Paste a YouTube link
If the iframe is blocked when the HTML file is opened locally, you still get a preview and a direct button to open the video on YouTube.
Open on YouTube
Ready to use.

Export

Hotkeys

  • M — add a marker at the current time
  • Space — play / pause for a local video file
  • The viewer supports both YouTube and local video files
  • If the YouTube iframe does not load from a local HTML file, the fallback viewer still shows the preview and direct link

About This Timestamp Marker

Timestamp Marker is a simple browser-based helper for creators, editors, and YouTube channel managers who need fast timestamp marking for videos. You can open a YouTube link, upload a local video file, add notes, create chapter markers, and export timestamps in a clean format.

This page is optimized for people looking for a YouTube timestamp maker, video chapter tool, local video timestamp marker, or timestamp notes tool for editing. It works without a backend and is useful for content production, review workflows, and editor handoff.