Spoof Timezone
This extension alters browser timezone to a random or user-defined value.
Spoof Timezone - Firefox Add-On for Timezone Privacy
"Spoof Timezone" is a Firefox add-on designed to protect your privacy by spoofing your current timezone. It provides websites with a user-defined or random timezone instead of the real one, making it harder for tracking scripts to use this information for browser fingerprinting. The add-on also offers an option to check the visible timezone and a toolbar button to easily enable or disable the function.
Add-on stats
Weekly download count: 410
Firefox on Android: Yes
Risk impact: High risk impact 
Risk likelihood:
Manifest version: 2
Permissions:
- storage
- *://*/*
- webNavigation
- contextMenus
- notifications
Size: 144.30K
URLs: Website
Ranking
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Add-on summary
This extension spoofs the current timezone provided by JavaScript to web pages. You can specify the preferred timezone in the options page and the add-on makes sure your real timezone is protected (invisible by websites). There is an option to ask the extension to provide random timezones as well. This option is useful to prevent fingerprinting scripts from using your current timezone as an element to uniquely identify your browser.
Notes:
- You can enable/disable the extension using the provided toolbar button.
- To test the visible timezone use the right-click context menu item
User reviews
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spammy, or outdated.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
- Works well for avoiding fingerprinting
- Has all the options needed for users
- Useful for changing displayed time on specific sites
Cons
- Doesn't automatically change time zones
- Lacks an exception or allow list for specific websites
- Inconvenient access to settings
- Breaks functionality on some banking and other websites
- Settings are not saved after browser restart
Most mentioned
- Not working or incorrect timezone
- Need for exception list
- Inconvenient settings management
- Issues with specific websites
- Manual adjustment required
User reviews
tested works fine
by Firefox user 16157275, 2024-12-08
doesn't work
by Firefox user 18648894, 2024-10-21
it spoils local (lan) sites. must have exception list.
by 🔥🦊, 2024-09-26
Add-on safety
Risk impact
Spoof Timezone requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.
Risk likelihood
Spoof Timezone has earned a fairly good reputation and likely can be trusted.
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