Code Injector

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

Total ratings

4.58 (Rating count: 71)

Review summary

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
See reviews for Code Injector on Firefox Browser Add-ons
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User reviews

Recent rating average: 4.40
All time rating average: 4.58
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Rating filters

5 star
77% (56)
4 star
11% (8)
3 star
5% (4)
2 star
3% (2)
1 star
4% (3)
Date Author Rating Comment
2025-01-15 DraakjeYoblama The best code injector I know of. So many similar add-ons only inject CSS or JS, but not both.
2025-01-05 Firefox user 17583962
2024-11-04 Firefox user 18668748
2024-10-29 Leigh This is a great extension, but won't work with restrictive Content Security Policies, which is fair enough; that's why they've been implemented.
2024-08-16 igorlogius
2024-07-06 Syed Ali Nice
2024-05-30 Alien10001 Doesn't work, cannot inject code into iframes.
2023-09-01 Nana Kwame A no-nonsense code injector that works like a charm.
2023-06-26 Borsuk It definitely works.
2023-03-03 bxlbjorn
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