Newtaboverride

New Tab Override lets Firefox users choose which page appears whenever they open a new tab.

github.com/cadeyrn/newtaboverride
Newtaboverride homepage screenshot

About Newtaboverride

New Tab Override lets Firefox users choose which page appears when they open a new tab. It can open a specified website, use the current homepage, display a stored local HTML file, or show a custom background color, with options for focus behavior and tab position.

It also supports random selection from multiple URLs, specific URLs for tab containers or tab groups, and configuration via enterprise policies. The Mozilla news option is German only, and the extension requires permissions including browser history access.

Key features

  • Set any website URL as the new tab page
  • Use current homepage as the new tab page
  • Store local HTML file for new tab content
  • Show custom background color for new tabs
  • Rotate multiple URLs separated by pipe character
  • Assign specific URLs to tab containers or groups
Best for: Firefox users who want to choose what appears when they open a new tab.
Good for
  • Open source
  • Available in multiple interface languages
  • Supports configuration via enterprise policies
Watch out for
  • Mozilla news option is German only
  • Requires permissions including browser history access
  • Local file and tab position stay device-local with enterprise policies

Newtaboverride at a glance

Type
Open-source project
Pricing
Not confirmed. Check the site
Platforms
Browser extension
Open source
Yes · Source code
Language
English
Last checked
Oct 5, 2026 · Online when checked
Listed
Oct 5, 2026

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Newtaboverride FAQ

How do I open the settings interface?
Press Shift + F12, enter newtab settings in the address bar, or use the Tools menu entry.
Can different new tab pages be used for different containers or groups?
Yes. Specific URLs can be assigned to tab containers or named tab groups, and group rules take precedence over container rules when the type is custom_url.
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