Theme Font & Size Changer

Theme Font & Size Changer

Theme Font & Size Changer lets you change the global font size and font family used for the user interface in Firefox. Design your browser with your favorite font.

What is Theme Font & Size Changer?
Theme Font & Size Changer is an add-on which lets you adjust the font size and family within the Firefox browser interface. The changes are applied instantly and are saved permanently. It is mainly used as an accessibility aid for visually impaired people and those without perfect eyesight, but it is also useful for Firefox users with high resolution settings and wide screens.
Stats
Users: 7,264 ▲ 31
Version: 62.0 (Last updated: 2017-11-14)
Creation date: 2010-05-28
Weekly download count: 86
Firefox on Android: Yes
Risk impact: High risk impact
Risk likelihood: Moderate risk likelihood
Manifest version: 2
Permissions:
  • tabs
  • storage
  • management
  • activeTab
  • downloads
  • contextMenus
  • <all_urls>
  • http://*/*
  • https://*/*
  • menus
  • See more
Size: 235.63K
URLs: Website
Stats date:

Other platforms

Not available on Chrome
Not available on Edge
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Summary

THUNDERBIRD USERS PLEASE SWITCH TO THE NEW THUNDERBIRD VERSION BY BELOW URL: https://addons.mozilla.org/en-US/firefox/addon/theme-font-size-changer-for-tb/

Theme Font & Size Changer is a simple browser tool that lets you change the font size and font family of Firefox and several other Mozilla products. It is especially valuable tool for visually impaired people and wide screen users.

Different from add-ons that enlarge and reduce text on web pages, Theme Font & Size Changer changes the font size and font family in all windows, menus, toolbars, etc within Firefox itself. All font size, font family, and other changes are applied instantly and they are saved permanently and through sessions. You may assign your favorite font into your browser interface and change its size as you wish.

It was initially created to be an accessibility aid for persons with visual impairments and for those without perfect eyesight, but it's also useful for Firefox users with high resolution settings and wide screens.

While Theme Font & Size Changer was written to be used with Firefox default theme, it does work with other non-default themes, but you may come across issues where some elements within Firefox retain the (non-default) font size setting that the theme developer chose for their theme.

There are two places that you can manage the global font size and font family of Firefox via Theme Font & Size Changer:

See more
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Firefox Browser Add-ons does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
    Cons
    • Does not work
    • Cannot resize fonts
    • Not being developed further
    • Doesn't change font type or size
    Most mentioned
    • Does not work
    • Cannot resize fonts
    • Should be removed
    • Not being developed further
    Recent reviews


    View all user reviews
    Safety
    Risk impact

    Theme Font & Size Changer is risky to use as it requires a number of sensitive permissions that can potentially harm your browser and steal your data. Exercise caution when installing this add-on. Review carefully before installing. We recommend that you only install Theme Font & Size Changer if you trust the publisher.

    Risk likelihood

    Theme Font & Size Changer is probably trust-worthy. Prefer other publishers if available. Exercise caution when installing this add-on.

    Upgrade to see risk analysis details
    Screenshots