Custom Style Script
Developer Tools
Add Custom JavaScript (JS) Code or Styles (CSS) to any page.
Users
10K
Rating
4.2
Reviews
42
7D Growth
0|0%
Stable signalNo paid features detectedMedium-risk permissions
User JavaScript and CSS
User JavaScript and CSS on any website
Users200KCurrent public install base
Rating4.8Store average score
Reviews657Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
4 assetsUser JavaScript and CSS Media preview
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7-day rating change
Start
4.75
Latest
4.75
7-day rating change
0.00
2026年7月16日2026年7月22日
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1-day growthFlat
00%7-day growthFlat
00%30-day growthFlat
00%Technical snapshot
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Version3.1.2
ManifestV3
Size1.72MiB
Languages2English / русский
Published
Store updated
Last crawled
Englishрусский
Overview
Product summary
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Userscript's and userstyle's — simple extension to inject own JavaScript or CSS rules to any page.
Features:
- Instant execution
- Custom libs include
- URL masking allows use one script or CSS on many pages
Documentation:
Reviews
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Store average score4.8Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.7Average computed only from synced review bodies below
Reviews with text472Synced review bodies
Total ratings / reviews657Chrome Web Store public rating/review count
Store average score: 4.8. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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The only thing this extension needs is '"all_frames": true' enabled in the manifest, and CSS injection into all frames. Great work!
I added this extension to deal with a single site whose styles made it unusable, but soon I found myself using it to modify the functionality of every site I visit frequently. If you're a CSS pedant, you need this.
Спасибо большое за этот прекрасный инструмент! Пользуюсь очень давно, все всегда отлично, но есть один вопрос, как увеличить размер локального хранилища? у меня стоит 102 кб. , я хочу увеличить до 100мб или больше, есть такая возможность?
if you are a front-end dev, you'll know how powerful this thing is! absolutely loved it!
Very helpful extension. I tried many others, but this is the least complicated one (and it is for free!). I use it in conjunction with Requestly, since the latter allows firing rules based on specific inbound data (e.g., as a result of a REST call from the webpage to the backend). I would appreciate it if such a feature is implemented in this extension so that I don't need two extensions. Also, it would be great to have some sort of standard code auto-format feature triggered with some shortcut (sorry, but I am a bit of a tidy-code-maniac :) ). Anyway, thanks a lot for this great extension!!
Great work so far!
It's awesome.
wow, good work guys, it works very well
This is the best extension on the webstore I define global styles to decrease distraction. Like on the all websites and all images grayscale and blurred. It would be amazing if there was a button to add current website to previously defined css,js set. And for removing ofc. So next to each item in the list "rules for this website" will have a [ + ] and [ - ] buttons to add current website to list as example.com with minus it will add negative !example.com
Hope I can switch the JS/CSS editor to DARK MODE in future