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 signalUnknownMedium-risk permissions
Custom CSS by Denis
Minimal and secure way to add custom CSS per-domain
Users20KCurrent public install base
Rating4.5Store average score
Reviews79Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
2 assetsCustom CSS by Denis Media preview
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Start
4.54
Latest
4.54
7-day rating change
0.00
2026年7月14日2026年7月20日
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Version1.4.0
ManifestV3
Size159KiB
Languages2English / 한국어
Published
Store updated
Last crawled
English한국어
Overview
Product summary
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Add custom CSS styles on websites. Allows to select elements based on text contents.
The extension does not require permissions to access all data on all websites all the time. Once you start editing CSS on a page, you get a permission prompt specific to that domain. Later, if the CSS for a domain is not used, the permission will be dropped.
There is no UI clutter of any kind. The entire extension consists of a big editable area for CSS code for the current domain.
Reviews
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Store average score4.5Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.4Average computed only from synced review bodies below
Reviews with text64Synced review bodies
Total ratings / reviews79Chrome Web Store public rating/review count
Store average score: 4.5. 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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I've been wanting something just like this forever! The built-in inspector is such a pain for editing CSS but this thing is just magically simplistic and exactly what I wanted. A simple notepad style interface to just dump CSS overrides for quick testing in web development. Works perfectly. Only been using it for about a week but it feels like something I could have been using for years already. This will be a mandatory plugin for me forever. I would have paid for this plugin - 100%. Thank you!
Great extension! I uninstalled other CSS modifiers after using this one. Can you make an option to choose whether or not to apply the styles to all internal frames?
Super cool extension!
Thanks Denis...love this. I had my own thing built but yours is quicker.
огонь! изменения применяются на лету, минималистичный интерфейс, идеально, большое спасибо!
Brilliant
Предельно простое расширение которое делает ровно то что нужно без лишней мишуры. Чего хотелось бы ещё от расширения: * возможность передвинуть окно в другое место, чтобы не заслоняло сайт * возможность ресайза окна * чтобы оно не закрывалось когда с него пропадает фокус * возможность указать домены для которых будут применены стили (актуально для сайтов с множеством поддоменов)
спасло трубу от обновления, миллион из 10 благодарностей~
Thanks a lot! 🙏
Exactly what I was looking for! This is a lifesaver as a CS major.