How it works
- Export your tab list from OneTab using the extension's Export / Import URLs screen.
- Paste the export here, or drop the saved .txt file into the upload box.
- The converter reads each URL | Page title line and uses blank lines as group breaks.
- Download a bookmarks.html file, CSV spreadsheet, or Markdown list without uploading anything.
How to turn a OneTab export into browser bookmarks
OneTab is handy when you need to collapse a crowded window into a list, but its export is plain text rather than a browser bookmark file. To get the data out, open the OneTab extension, choose Export / Import URLs, and copy the exported list. Each tab is usually written on one line with the URL first, a pipe character, and then the page title.
This converter turns that text into the Netscape bookmarks HTML format used by Chrome, Firefox, Edge, and many bookmark managers. Blank lines in your export become folder breaks, so a long OneTab list can still import as separate bookmark folders instead of one flat pile. The file is generated locally in your browser, which means your URLs never pass through a server.
A small pushback: direct copy-and-paste into a bookmark manager usually loses the group structure that made the OneTab list useful. Converting to bookmarks.html keeps each group visible as a folder named after the group number and the first tab's domain. That gives you a portable backup that is easier to inspect, import, and archive.
If you are leaving OneTab, export before removing it. Extension data is normally tied to the extension's local browser storage, and uninstalling or reinstalling an extension can remove saved lists. A bookmarks HTML backup gives you a copy outside OneTab before you make the switch.