Block Site Firefox

Reviews of Block Site

By: Ray Add-on
List of user reviews and ratings for Block Site

Total ratings

3.89 (Rating count: 531)
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Review summary

Users praise Block Site for effective, free, and open-source blocking of sites with a straightforward interface. However several users report reliability problems after browser updates and private mode changes, as well as cumbersome rule management that complicates editing. A subset of reviews expresses security concerns about authenticity and unexpected prompts. Overall, the add-on is useful for basic blocking and privacy, but may require patience with updates and rule handling.
Pros
  • Effectively blocks listed sites and pages as intended.
  • Free to use with no subscription, lightweight and simple.
  • Open-source with active maintenance and bug fixes.
  • Useful for improving browser security/privacy and helping curb social media usage.
  • Simple, straightforward extension without bloat.
Cons
  • Reliability and compatibility issues after browser/OS updates, including private mode not working.
  • Rule management is cumbersome: cannot edit rules inline and regex changes can mis-format, requiring full purge and reload.
  • Occasional security/authenticity concerns raised by users, including prompts and suspicion about the vendor.
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User Reviews

Recent rating average: 3.10
All time rating average: 3.89
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5 star
55% (211)
4 star
11% (42)
3 star
5% (21)
2 star
5% (19)
1 star
24% (91)
DateAuthorRatingComment
2026-08-21 Ab***** Good and useful! I have ADHD so I often find myself doing side quests instead of the projects I want to work on. This addon really helps me focus! Pretty easy to use though I am having a little bit of difficulty finding out how to change the master password because I set it to something that is a little mean to my computer and I feel bad and I don't want to be mean to it anymore. :(
Good and useful! I have ADHD so I often find myself doing side quests instead of the projects I want to work on. This addon really helps me focus! Pretty easy to use though I am having a little bit of difficulty finding out how to change the master password because I set it to something that is a little mean to my computer and I feel bad and I don't want to be mean to it anymore. :(
2026-08-08 Fi*****
2026-07-29 ye*****
2026-07-29 Fi***** Works and can be helpful, but still quite buggy. Blocking hours don't hold up, and will randomly reset or become null after a day or two. Also: sometimes opening a URL in a new tab immediately blocks the page from loading (even though it's belongs to the same root domain page that I opened it up from). :'( Fixing all this would easily have me give it 5/5
Works and can be helpful, but still quite buggy. Blocking hours don't hold up, and will randomly reset or become null after a day or two. Also: sometimes opening a URL in a new tab immediately blocks the page from loading (even though it's belongs to the same root domain page that I opened it up from). :'( Fixing all this would easily have me give it 5/5
2026-07-20 Mm*****
2026-07-13 Sp*****
2026-07-02 Ug*****
2026-06-30 EC*****
2026-04-25 *****
2026-04-23 su*****
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