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Preview of TweakJS

TweakJS by P.C

Execute custom JavaScript on Websites Run custom JavaScript on any site — per-domain tweaks to change appearance, replace text, redirect pages, and more.

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About this extension
TweakJS is a lightweight extension that gives you full control over what runs on the pages you visit. Add domains and attach JavaScript snippets that execute automatically whenever those pages load.

Use it to personalize site appearance, fix small annoyances, automate tiny tasks, or prototype quick changes — all from your browser.

TweakJS — small scripts, big control. Customize the web the way you want it.

Author: P.C
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Permissions and data

Required permissions:

  • Access browser tabs
  • Access browser activity during navigation
  • Access your data for all websites

Data collection:

  • The developer says this extension doesn't require data collection.
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More information
Add-on Links
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Version
1.2
Size
40.64 KB
Last updated
6 days ago (Oct 26, 2025)
Related Categories
  • Web Development
  • Appearance
License
All Rights Reserved
Version History
  • See all versions
Tags
  • content blocker
  • user scripts
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