CSS Inject

Name: CSS Inject
Author: aadilmallickyt

Inject custom CSS into any website

As of May 2026, CSS Inject has 25 users in the Developer Tools category.

aadilmallickyt Developer Tools

Chrome Web Store ↗.crx

Users+13.6%

Rating0%

—

— reviews

Reviews0%

—

Version

1.0.1

Manifest V3

History

2 snapshots

Tracking since Apr 28, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 28, 2026	22	—	—	1.0.1
May 25, 2026	23	—	—	1.0.1
Now	25	—	—	1.0.1

Permissions & access

Permissions: storagescriptingactiveTabunlimitedStorage
Host access: None declared

Screenshots

About

An extension to inject custom CSS into any site you want and have it be saved. The CSS will persist across sessions and your preferences will be saved. 

The best part of this extension is that it has minimal permissions, which reduces the risk of this being malware or being used in a trojan horse attack. Basically other extensions that need to inject javascript onto the page can also track your browsing history. This doesn't, because I only ask for permissions at runtime. This leads to a more secure experience if the only thing you want to do is inejct CSS. 

The source code is at https://github.com/aadilmallick/css-injector

**Current features**

- Persistent injected custom CSS
- Remove annoying toasts with an option in the options page
- Unlimited storage
- Code styling

**Future features**

- Add options for matches on URLs instead of just domain name