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
Trend
User growth trend
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User Growth Over Time
Rating trend
7-day rating trend
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7-day rating change
Start
4.75
Latest
4.75
7-day rating change
0.00
2026年7月15日2026年7月21日
Growth overview
Daily, weekly, and monthly growth
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1-day growthFlat
00%7-day growthFlat
00%30-day growthFlat
00%Technical snapshot
Version, languages, and crawl freshness
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Version3.1.2
ManifestV3
Size1.72MiB
Languages2English / русский
Published
Store updated
Last crawled
Englishрусский
Overview
Product summary
Review the store description, core capabilities, and common use cases.
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
Recent review snapshot
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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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Works perfectly!!
Good!!!!
It works very well.
Adds JS and CSS to pages and doesn't require an account creation and your social security number as most of the other extensions do.
good tool i love it thank you so much.
Working Good
Отличное, минималистичное расширение, которым пользовался несколько лет. Но последнее время при попытке добавления стилей, браузер подвисает и закрывается. Может такое только у меня...
This is the nicest extension for injecting both JS *and* CSS. Needs to be ported to FF
Waiting for the day we will get SASS support
I absolutely love this extension! but please add a dark mode for the whole extension, settings page and all, not just the editor window, ive tried to fix it using the extension itself, but it seems css cant be injected into extension pages, like the chrome store, annoyingly