Merlin
CustomCSS Injector

CustomCSS Injector

- Apply any CSS rules for any websites, including iframes. - Whitelist and Blacklist functionality - Apply CSS rules to specific URLs, Domains or Globally - Syntax highlighting & line numbers - Update without page refresh

Total ratings for CustomCSS Injector
4.50 (Rating count: 16)
Merlin
User reviews 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
  • Easy to use
  • Powerful
  • Able to override offending CSS
  • Lightweight and straightforward
  • Makes work much easier
Cons
  • Delay in CSS injection
  • Doesn't seem to work initially
  • Invalid data error with no feedback
Most mentioned
  • Easy to use
  • Powerful
  • Delay in CSS injection
  • Fixes CSS issues
  • Needs support for Firefox for Android
See reviews for CustomCSS Injector on Firefox Browser Add-ons
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Recent reviews for CustomCSS Injector
Recent rating average: 4.30
All time rating average: 4.50
Upgrade to see all 16 reviews
Rating filters
5 star
63% (10) 4 star
31% (5) 3 star
0% 2 star
6% (1) 1 star
0%
Date Author Rating Comment
2022-05-10 Firefox user 14033823
2022-04-03 SilvereR
2022-03-13 Vindikato
2021-08-21 Gary Coleman Works Great!
2021-05-04 Pythack
2021-02-15 Firefox user 14126281
2020-12-15 Firefox user 16519112 Nice plugin! Is it possible to get rid of the [CustomCSS Injector] Applied custom CSS. console.log() message?
2020-10-12 Firefox user 14492264 CSS inject is too late so page is changed after fully load
2020-10-01 pavi2410
2020-09-04 David White Somehow, with Firefox 80 the EBay Print Shipping Label page was placing up/down arrows in the numeric input fields for weight and dimensions rendering them unusable. I was able to find the offending CSS and figure out how to defeat it. Then I am very easily able to use this addon to over-ride the offending CSS. Freaking great! But I am really only a novice in all these matters. At least this prevents me having to switch to Chrome for this page/operation. Thanks!
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