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
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User Growth Over Time
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7-day rating change
Start
4.75
Latest
4.75
7-day rating change
0.00
2026年7月14日2026年7月20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
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
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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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Splendid extension. I use it to test js injection for work to digest and convert tables into interactable ChartJS canvas elements, or for personal handy things like spitting out drive distances on an auctions site so I can easily see how far each one is- and it is absolutely perfect.
Its a great extension for online sites. However as a developer, the extension seems to be causing AntiForgery token errors on localhost with the error '__RequestVerificationToken' is not present. This even happens if I don't have a rule on my localhost site. The moment I disable the extension, it all works again.
Até hoje usava o Code Injector que irá ser barrado pela Google. Felizmente descobri esta Extensão ! Sou fã ! Funciona muito bem com o Jquery, e é "user friendly". Parabéns ao criador !
Rate 5 stars. BUT! How to close JS editor if I want to use only CSS editor? Как отключить/свернуть JS панель когда я ею вообще не пользуюсь?
Brilliant extension :)
☘️
I would like to migrate my JS & CSS settings from Chrome to Vivaldi. Do I have to copy and paste them one by one?
好用，而且 UI 真好看，感觉作者真的很用心打磨了
Great extension. Only thing that's missing is the option for a vertical split between the editors for vertical monitor setups. Would be perfect with that added.
Great extension but not too much customization. Suggestion for developer: - add possibility to share your piece of code with others (ability to install my code for other users); - add possibility to create custom snippets in editor (for now autocomplete works not as well as I want), so this feature will fix it; - add One Dark Theme, idk why this theme is not added, is the most popular theme in VS Code, Jetbrains editors... - can't choose editor font family But in general it's ok, good job!