Minimal and secure way to add custom CSS per-domain
Users
20K
0 in 30 days
Rating
4.4 / 5
−0.10 in 30 days
Ratings
84
+3 in 30 days
Store rank
#5,729
#4,912 among extensions
Version
1.4.0
updated 4 May 2026
Users
monthly, 3 years
Latest, 15 Oct 2026:20,000 usersMove the mouse over the chart for any month
Ratings count
monthly, 3 years
Latest, 15 Oct 2026:84 ratingsMove the mouse over the chart for any month
The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.
About Custom CSS by Denis
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.
(There is a limit of 7500 chars of CSS per domain)