Quick CSS

by haysessophie · Workflow & Planning

Manifest V3 Free

View in Chrome Web Store Data as of 17 Oct 2026

Inject custom CSS into any website. Styles persist across reloads.

Users

+1 in 30 days

Rating

0.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#242K

#203K among extensions

Version

1.0.0

updated 4 May 2026

Users

monthly, 6 months

Latest, 17 Oct 2026: 6 usersMove the mouse over the chart for any month

Ratings count

monthly, 6 months

Latest, 17 Oct 2026: 0 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 Quick CSS

Quick CSS lets you inject custom CSS into any website and save it permanently. KEY FEATURES: - Per-site CSS — styles apply only to the site you set them for - Persists across reloads — styles load automatically every time you visit - Global CSS — rules that apply to every website at once - Enable/Disable toggle — turn styles on/off without deleting them - All Sites page — manage, edit, export and import all your saved styles - Import/Export — backup and restore all styles as JSON HOW TO USE: 1. Open any website 2. Click the Quick CSS icon in your toolbar 3. Type your CSS in the text area 4. Click "Save & Apply" — styles apply instantly, no reload needed Perfect for: fixing broken layouts, dark mode tweaks, hiding annoying elements, typography improvements, and any personal web customization. No account required. No data sent anywhere. All styles stored locally on your device.