JavaScript Injector

JavaScript Injector

Inject javascript in a given website.

  • JavaScript Injector
  • JavaScript Injector
  • JavaScript Injector
  • JavaScript Injector
What is JavaScript Injector?
The 'JavaScript Injector' is a specialized Chrome extension designed for dynamically injecting JavaScript into a selected webpage. It allows users to extend the functionality of a specific webpage seamlessly. Key features include the ability to add URLs with/without regular expressions, maintain a list of URLs, inline edit your JS codes, turn the JS code execution on/off as needed, and a searching feature to find your specific URLs easily. Ideal for those who regularly work with webpage customization and scripting.
By: luisnaia
Users: 4,000+
Rating: 2.91 (33)
Version: 1.0.4 (Last updated: 2014-08-21)
Creation date: 2014-08-21
Risk impact: High risk impact
Risk likelihood: Low risk likelihood
Manifest version: 2
  • tabs
  • http://*/*
  • https://*/*
  • activeTab
  • storage
  • webNavigation
Size: 406.53K
Stats date:

Other platforms

Not available on Firefox
Not available on Edge
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This chrome extension has the purpose of injecting Java Script into a target URL every time that page loads.

You can inject your favourite script to extend the page functionality.


  • Add urls with or without regular expressions
  • Keep a list of your urls and edit your js code inline
  • You can turn on/off the js code when you wish
  • Search trough your URLs
User reviews
User reviews summary
These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
  • Works well
  • Allows to run custom inline Javascript on a page
  • Simple JS injector
  • Doesn't work for all users
  • No syntax highlighting
  • Difficulties with js files import
Most mentioned
  • Ease of use
  • Runs custom Javascript
  • Not working for some users
Recent reviews
Simply amazing, the bad reviews seem by people that do not know how to use the plugin and/or read the help section :P
by killerbaru478 ! killerbaru478 !, 2022-07-19

Всё заработало. Расширение - пушка! Без проблем вырезал надоедливую рекламу с сайта. Если хотите запускать скрипт на всём сайте, то используйте ссылку формата*

Not sure why it got poor reviews before, it's a very handy url filtered javascript injector that works just fine, better than most of the others as they run on all pages
by Mark Buck Mark Buck, 2020-07-28
View all user reviews
Risk impact

JavaScript Injector 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 extension. Review carefully before installing. We recommend that you only install JavaScript Injector if you trust the publisher.

Risk likelihood

JavaScript Injector has earned a fairly good reputation and likely can be trusted.

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Promo images
JavaScript Injector small promo image
Small promo image
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