Compare: Style Engine – Custom CSS & JavaScript vs CSS Edit
| Stats |   Style Engine – Custom CSS & JavaScript |  CSS Edit |
|---|---|---|
| User count | 1 | 2 |
| Average rating | 0.00 | 0.00 |
| Rating count | 0 | 0 |
| Last updated | 2026-03-04 | 2026-04-02 |
| Size | 102.28KB | 54.51KB |
| Version | 1.2.0 | 0.5 |
| Short description | |
|---|---|
| Apply custom CSS and JavaScript to websites globally or per domain. Lightweight, local-only, and fully user-controlled. | A Firefox extension for injecting custom CSS into any website in real-time, with preset management and per-site configuration. |
| Full summary | |
- | - |
Popular Extensions / Apps
Here are some popular extensions / apps that you might be interested in:
Bitwarden Password Manager
Bitwarden Inc.
958K 4.61 
(9,245)
Google Calendar
Google LLC
10B 4.65 (4,574,850)
Merlin AI
https://getmerlin.in
900K 4.79 (8,794) 
Steam Inventory Helper
https://steaminventoryhelper.com/
1000K 4.46 (17,614) 
Pie Adblock - A Powerful Free Ad Blocker
https://pie.org
2M 4.90 (29,552) 
Bitwarden Password Manager
https://bitwarden.com/
6M 4.32 (7,782)
Dark Reader
alexanderby
3M 4.60 (1,343) 
Auto Refresh Plus | Page Monitor
https://autorefresh.io
1000K 4.87 (21,690) 
Quillbot: AI Writing Assistant to Grammar Check, Paraphrase & Translate
https://quillbot.com/
5M 4.70 (5,251) 
Mi Browser
Zhigu Corporation Limited
1B 4.52 (1,275,872) 
Golf Battle
Miniclip.com
101M 4.73 (1,288,812) 
AdGuard AdBlocker
https://adguard.com
17M 4.66 (68,000)