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Preview of Spoof Timezone

Spoof Timezone by Joue

This extension alters browser timezone to a random or user-defined value.

3.5 (66 reviews)3.5 (66 reviews)
1,506 Users1,506 Users
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Extension Metadata

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About this extension
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:
1. You can enable/disable the extension using the provided toolbar button.
2. To test the visible timezone use the right-click context menu item
Rated 3.5 by 66 reviewers
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Permissions and dataLearn more

Required permissions:

  • Display notifications to you
  • Access browser activity during navigation

Optional permissions:

  • Access your data for all websites
More information
Add-on Links
  • Homepage
  • Support site
Version
0.4.7
Size
182.17 KB
Last updated
4 days ago (Aug 23, 2025)
Related Categories
  • Privacy & Security
License
Mozilla Public License 2.0
Version History
  • See all versions
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Release notes for 0.4.7
  1. Excludes "challenges.cloudflare.com" by default
  2. Uses internal timezone list instead of the fixed list
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