
Dark Reader
Stylebot
Stylus
CodePen
JavaScript Obfuscator
Amino Editor
JSFiddle
User JavaScript and CSS on any website

Greasemonkey
Tampermonkey
Greasy Fork
Userscripts
Database Script Tool
Script Manager – SManager
FireMonkey
Violentmonkey is a userscript manager to support running userscripts in web pages.
Which is more popular?
Based on our record, Violentmonkey should be more popular than User JavaScript and CSS. It has been mentioned 46 times since March 2021.
Website, pricing, platforms and company facts side by side.
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| Website | chromewebstore.google.com | violentmonkey.github.io |
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What each product offers, as listed by its team.


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How often each product is chosen within a category, 0–100% relative to the other.


Share your experience with using User JavaScript and CSS and Violentmonkey. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.


You can use such scripts on tampermonkey (chrome) or greasemonkey (for firefox) or User Javascript an CSS injector. Source: over 3 years ago
Speaking of Kbin, I made a blue theme (before) that anyone can use. Here is the CSS code. To apply it, use the chrome/brave extension called 'User JavaScript and CSS'. There are other extensions in different browsers that do the same... Source: over 3 years ago
I recommend this to use it: https://chrome.google.com/webstore/detail/user-javascript-and-css/nbhcbdghjpllgmfilhnhkllmkecfmpld. Source: over 3 years ago
- GPT 4o mini, so you can save your 4o calls for more complex queries https://github.com/altbdoor/userscripts/raw/master/force-gpt3.user.js. - Source: Hacker News / about 2 years ago
Since Tampermonkey seems to be misbehaving, consider using Violentmonkey. Source: almost 3 years ago
Step 1Install violentmonkey (or your favorite user script manager). Source: about 3 years ago
When comparing User JavaScript and CSS and Violentmonkey, you can also consider the following products.

Reduce eye strain in your browser with this extension that provides a dark theme for browsing.
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Customize the way a web page displays or behaves, by using small bits of JavaScript.
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Change the appearance of websites instantly. Preview and install styles created by other users on stylebot.me
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Greasemonkey compatible script manager.
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A site for user scripts.
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