User JavaScript and CSS
Developer Tools
User JavaScript and CSS on any website
Users
200K
Rating
4.8
Reviews
657
7D Growth
0|0%
Stable signalUnknownMedium-risk permissions
Live editor for CSS, Less & Sass - Magic CSS
Live preview of CSS/Less/Sass code changes. Auto-save file, autocomplete, Less/Sass to CSS, beautify, CSS reloader, lint, ...
Users60KCurrent public install base
Rating4.6Store average score
Reviews280Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
2 assetsLive editor for CSS, Less & Sass - Magic CSS Media preview
Trend
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7-day rating change
Start
4.63
Latest
4.63
7-day rating change
0.00
2026年7月13日2026年7月19日
Growth overview
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1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-10K-14.3%Technical snapshot
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Version8.22.5
ManifestV3
Size2.15MiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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Run this extension and start writing your CSS/Less/Sass code which gets applied immediately. The code you write will be saved in the browser extension's storage space or the site's local storage.
Featuring:
✓ Live editor for CSS/Less/Sass code - Preview changes as you write code
✓ Autocomplete
✓ Live edit CSS files and auto-save on file system
✓ Open code editor in external window
Reviews
Recent review snapshot
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Store average score4.6Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average4.6Average computed only from synced review bodies below
Reviews with text184Synced review bodies
Total ratings / reviews280Chrome Web Store public rating/review count
Store average score: 4.6. 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.
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Simple, "it just works".
não consegui fazer nada
This was my goto, but had to remove it because of the annoying little notification that tells me I have autoloading CSS Pinned ruins some of our screen captures. It shows on every refresh for whatever reason. Which it would just stay docked to the extension icon. If you don't need to load any local CSS and screen record at the same time, then this is for you though.
Great
Works great. Probably the best custom CSS extension. I'm reinstalling my OS. Where can I find the CSS files, so that I can save them?
Magnifique extension, bien pensée et efficace. Seul bémol : petit laps de temps supplémentaire pour le chargement du style CSS, qui ralentit donc un peu le site web. Je pense que ce défaut est cependant incontournable.
Have loved this tool however it has not been working for me on specific websites (unfortunately the ones I happen to use it the most on). Would love if I could get some support regarding this possibly to see if there is a way to fix or work around this. Otherwise fully recommend and a great tool!
Excelente! Anda perfecto. Agrego CSS, veo como funciona, y luego lo paso a la hoja de estilos real. Es lo mismo que hago con Chrome Dev Tools con algunas vueltas, pero más cómodo!
Would have given you a 5 start but what Happened to Dark Mode?
Très puissant et facile à utiliser ; un must pour le dev front et l'amélioration progressive pour bénéficier sans autre outil des bénéfices de SASS et/ou LESS. L'extension est très stable et beaucoup moins intrusive que ses concurrentes. Un must-have.