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
Trend
User growth trend
Review user movement across collected snapshots.
User Growth Over Time
Rating trend
7-day rating trend
View collected rating snapshots from the latest 7-day window to assess rating stability.
7-day rating change
Start
4.54
Latest
4.54
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
Compare 1-day, 7-day, and 30-day net growth and growth rate.
1-day growthFlat
00%7-day growthFlat
00%30-day growthFlat
00%Technical snapshot
Version, languages, and crawl freshness
Review publication date, version, supported languages, and crawl timestamps.
Version1.4.0
ManifestV3
Size159KiB
Languages2English / 한국어
Published
Store updated
Last crawled
English한국어
Overview
Product summary
Review the store description, core capabilities, and common use cases.
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
Recent review snapshot
Inspect the latest comments and rating distribution.
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.
Related products
Similar and related extensions
Review related products from the Chrome Web Store detail page.
CSS Override Extension
Developer Tools
Override web page CSS with custom styles.
Users
954
Rating
1.6
Reviews
5
7D Growth
+12|1.27%
Live CSS Tester
Developer Tools
Easily inject CSS into a webpage for testing
Users
2K
Rating
3.9
Reviews
7
7D Growth
0|0%
Amino: Live CSS Editor
Developer Tools
Customize any website with your own CSS and see your changes instantly with Amino!
Users
20K
Rating
4.3
Reviews
461
7D Growth
0|0%
Website Customizer: Add Custom Style and CSS
Tools
This Chrome extension is designed to modify the visual presentation of websites by adding custom CSS.
Users
713
Rating
5.0
Reviews
2
7D Growth
+23|3.33%
User JavaScript and CSS
Developer Tools
User JavaScript and CSS on any website
Users
200K
Rating
4.8
Reviews
657
7D Growth
0|0%
Super awesome! Extremely easy. Could definitely use a few more basic features, though. The most important being, in my opinion, the ability to specify CSS by portions of a URL, rather than domain. This will be critical to be able to use it to visually differentiate between production and sandboxes that reside on the same domain (like with Marketo). Would love to see that added :)
Have been using this plenty for the past months, however now all my changes to websites are overwritten (scratched over) and the element inspecter says "Injected stylesheet". This has changed in the past few days. I wonder if it coincides with the September 10 update.
Good, but would be nice if they had syntax highlighting and other things that IDEs have (automatically adding }, etc) but I'm just being nitpicky. The only issue I have is that sometimes, the style is added before some of the website's styles so your custom css gets overriden
Quickly becomes indispensable. Hundreds of use cases for small tweaks that deliver big improvements to usability, accessibility, and productivity on websites with suboptimal designs. Just a few examples: 1) Improve readability/accessibility of design schemes by recoloring text/links to higher-contrast colors or adding a high-contrast drop-shadow to create a "glow" effect behind images that blend too much into the background (especially useful for sites not optimized for your browser's native dark mode). 2) Enlarge or add scroll bars to fixed-size containers that inadvertently cut off content intended to be visible (especially useful for users who use their system settings to scale all elements system-wide to something other than 100%, which often breaks overly rigid web designs). 3) Allow a primary content container to expand to fill empty space (especially useful when running an ad blocker on sites where the entire side-rail is reserved for ads, which normally leaves a bunch of unused/wasted space in the side-rail). 4) Optimize the display of dynamic content in SaaS platforms with inconvenient design limitations (e.g. report views generated with non-resizable columns that cut off content, despite ample available screen real estate to widen the column and make all data visible).
Very nice, I use it for many sites. The only issue is the extension icon is hard to see if you have the browser header dark, whereas other extension icons seem to invert colors.
one word , perfect
Perfect. Just what I needed.
Simples e Perfeito: Simplesmente perfeito e Perfeitamente simples! Parabéns ao(s) desenvolvedor(es)!!!
В ЯБраузере не работает :(
btn "Grant permission" not continue