Code Injector

Inject code into websites! (JavaScript, CSS, HTML and Files)

Code Injector: Customize Websites with Your Own Code

'Code Injector' is a great development tool for those looking to tailor their browsing experience. With this Firefox add-on, users can effectively inject their own JavaScript, CSS, HTML and files into websites, taking web customization to a new level. But make sure you come equipped with a basic understanding of web programming to maximize the benefits of this powerful tool.

Add-on stats

By: Saba
Users: 2,077
59
Version: 0.3.3 (Last updated: 2022-01-16)
Creation date: 2017-10-09
Weekly download count: 31
Firefox on Android: No
Risk impact: High risk impact
Risk likelihood:
Manifest version: 2
Permissions:
  • <all_urls>
  • tabs
  • activeTab
  • storage
  • webNavigation
Size: 2.46M
URLs: Website

Other platforms

Code Injector (v0.3.2)
4.79 (14) 10,000
Not available on Android
Code Injector (v0.3.2)
4.50 (8) 4,094
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Add-on summary

An addon which let the user inject code into the websites.

A minimum knowledge of web programming is required to be able to properly use this add-on. Documentation (GitHub): https://github.com/Lor-Saba/Code-Injector

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 for both CSS and JS injection
  • Simple and efficient to use
  • Effective for modifying web pages
  • Reliable for users who have been using it for a long time
Cons
  • Does not work with restrictive Content Security Policies
  • Cannot inject code into iframes
  • Issues with 'On page load' feature
  • Problems with loading scripts from file or URL
Most mentioned
  • Functionality issues related to Content Security Policy
  • Code injection reliability issues
  • Feature requests for improved usability and options
User reviews
The best code injector I know of. So many similar add-ons only inject CSS or JS, but not both.
by DraakjeYoblama, 2025-01-15


View all user reviews

Add-on safety

Risk impact

Code Injector requires some sensitive permissions that could impact your browser and data security. Exercise caution before installing.

Risk likelihood

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

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