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
Growth overview
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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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Можно ли применять для локальных html-файлов? file:///X:/.../index.html. попробовал разные маски - не получилось
Works, very simple interface.
Я часто смотрю фильмы, а плееры у этих фильмов находятся в iframe и у них появляется рамка и если вписать video{outline:none;} то это никак не помогает... Хотя есть расширения которые работают и переназначают стили в ифреймах, к примеру Stylus. Очень не хочется ставить еще одно расширение, если по сути это тоже так долго мочь делать. Да и искать прочие расширения с возможностью внедрения js и css кода не хочется. Я думаю возможно сделать, что бы css код применялся ко всем сайтам, даже которые открыты в iframe окне. Было бы круто, если бы вы это сделали!
Nice & useful! How can i add to a "New Tab" page (formed by an extension)? i tried a URL of "" but hello world window.onload = function(){ alert('Hello world'); }; did not work ... any work around for "Null" URLs??
It's very useful.
THE BEST!!!
Good and useful
AMAZING I as a dev find this extremely useful for auto-start and page "rules" 6 stars
シンプルで分かりやすく大変諜報しています。 URL毎に、しかも階層的にカスケード出来るのも良いですね
very good helps me with my krunker CSS