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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User Growth Over Time
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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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muy bueno
Fait -très- bien le job. Sauf pour l'édition de style jquery-ui qui poseront sans doute ds problèmes avec le css injecté par magicss. Et l'interface fait un peu cheap.
Perfect! Especially the floating window and "Disable CSS" feature. Although the window skin is disgusting.
good
Doesn't seem to actually work on my Chrome Version 47.0.2526.80 m. Nice idea if it did though.
nice extension, it notifies if the css selector is working or not, great.
Looks fine when you start but then after using it a few times it fails to update meaning you have to copy the css, reload the page - open whatever source viewer and start using it again.. kills productivity!
Speeds up workflow, testing, and debugging! very useful! Google developer tool is very daunting to use for quick easy testing. this extension however, is not!
Great extension! Just add an autocompletion feature and it will be epic :)
Use it daily. Thanks!