Greasemonkey
Hacker ApprovedShares rank 22 of 70 browser extensions by recommenders
A Firefox extension that runs user scripts to customize how websites look and behave, recommended as a free, easy-to-review way to personalize the web.
A Firefox extension that runs user scripts to customize how websites look and behave, recommended as a free, easy-to-review way to personalize the web.
17 people gave an opinion
- recommend it
- 16
- criticize it
- 1
- approval share
- 94%
Recommended in 8 of 13 months
- November 2025: recommended
- December 2025: recommended
- January 2026: recommended
- February 2026: recommended
- March 2026: not recommended
- April 2026: recommended
- May 2026: not recommended
- June 2026: recommended
- July 2026: not recommended
- August 2026: recommended
- September 2026: recommended
- October 2026: not recommended
- November 2026: not recommended (month in progress)
Why it carries the badge
- 16 people recommend itNeeds 10 or more, met.
- 16 recommenders for every criticNeeds 2 to 1 or better, met.
- Recommended in 8 of 13 monthsNeeds 4 or more, met.
The same three rules apply to every product, and the badge can’t be bought. How the badge works
What people say about it
The reasons people give, with the number of comments that give each one. Open a reason to read what they said.
Why people recommend it
Each mark is one comment
Customizes websites with user scripts
“browsers have greasemonkey to help me personalize websites easily”
Comment from 8 Jun 2026 in “Show HN: Gitdot – a better GitHub. Open-source, anti-AI, and written in Rust” “I love customizing the web - I use Greasemonkey extensively”
Comment from 13 Nov 2025 in “Launch HN: Tweeks (YC W25) – Browser extension to deshittify the web” “I did like useing greasemonkey to customize everything”
Comment from 16 Dec 2025 in “8M users' AI conversations sold for profit by "privacy" extensions” - Comment from 6 Dec 2025 in “Ask HN: Why we dont we have dark mode on Hacker News yet? this is not funny”
Easy to review and free
“easy to review, which is why I prefer them over the normal extensions”
Comment from 26 Dec 2025 in “ChatGPT conversations still lack timestamps after years of requests” “Greasemonkey is a free download”
Comment from 6 Dec 2025 in “Ask HN: Why we dont we have dark mode on Hacker News yet? this is not funny” Preferred over Tampermonkey alternatives
“I don't have to for greasemonkey / tampermonkey, which let's me do the same thing.”
Comment from 14 Nov 2025 in “Launch HN: Tweeks (YC W25) – Browser extension to deshittify the web” “I think it's better to use Tampermonkey/Greasemonkey.”
Comment from 13 Nov 2025 in “Launch HN: Tweeks (YC W25) – Browser extension to deshittify the web” “I prefer using Greasemonkey / Tampermonkey”
Comment from 13 Feb 2026 in “Shut Up: Comment Blocker”
What people warn about
Each mark is one comment
Syncing scripts across machines is annoying
“copying scripts between machines became annoying, and I don't think it ever worked on mobile”
Comment from 15 Aug 2026 in “Ask HN: How do you keep up with HN these days?” Installation can change unrelated page content
“Had a bad time when I installed it and forgot about it and it replaced my manager's first name”
Comment from 12 May 2026 in “They Live (1988) inspired Adblocker”
Other browser extensions people recommend
The four most recommended other browser extensions, with the same counts for each, so you can compare like for like. The tick on each bar marks the 2 to 1 line the badge needs.
| Product | Recommend | Criticize | Approval | Months | Owned | Badge |
|---|---|---|---|---|---|---|
| SponsorBlock | 137 | 4 | 97% | 13 | — | Approved |
| Firefox Multi-Account Containers | 76 | 13 | 85% | 10 | 7.5 yrs3 owners | Approved |
| NoScript | 61 | 11 | 85% | 12 | 10 yrs4 owners | Approved |
| Claude in Chrome | 53 | 42 | 56% | 9 | — | — |
| GreasemonkeyThis page | 16 | 1 | 94% | 8 | — | Approved |
What people said
15 of the 18 comments that mention it, newest first. Each links to the original comment.
“Works on Firefox for Android.”
“copying scripts between machines became annoying, and I don't think it ever worked on mobile”
“use grease monkey or whatever is used nowadays”
“browsers have greasemonkey to help me personalize websites easily”
“Had a bad time when I installed it and forgot about it and it replaced my manager's first name”
“I prefer using Greasemonkey / Tampermonkey”
“Greasemonkey userscript for existing Safari and Chrome extensions?”
“easy to review, which is why I prefer them over the normal extensions”
“That's what development tools are for. Or Greasemonkey/Violentmonkey.”
“I did like useing greasemonkey to customize everything”
“Just do it yourself with Greasemonkey”
“Greasemonkey is a free download”
“I don't have to for greasemonkey / tampermonkey, which let's me do the same thing.”
“I love customizing the web - I use Greasemonkey extensively”
“I think it's better to use Tampermonkey/Greasemonkey.”
Counts come from 1,795,640 Hacker News comments, November 2025 to November 2026. How we count. Report a mistake.