Live editor for CSS, Less & Sass - Magic CSS

Name: Live editor for CSS, Less & Sass - Magic CSS
Rating: 4.64 (278 reviews)
Author: webextensions.org

Live preview of CSS/Less/Sass code changes. Auto-save file, autocomplete, Less/Sass to CSS, beautify, CSS reloader, lint, ...

As of May 2026, Live editor for CSS, Less & Sass - Magic CSS has 70,000 users and a 4.64/5 rating from 278 reviews in the Developer Tools category.

webextensions.org Developer Tools★ Featured

Chrome Web Store ↗.crx

Users0%

70.0K

70,000

Rating0%

4.64

278 reviews

Reviews0%

278

Version

8.22.5

Manifest V3

History

1 snapshots

Tracking since Apr 28, 2026.

View as table

Date	Users	Rating	Reviews	Version
Apr 28, 2026	70.0K	4.64	278	8.22.5
Now	70.0K	4.64	278	8.22.5

Permissions & access

Permissions: activeTabstorageunlimitedStoragescriptingoffscreen
Host access: None declared

Screenshots

Live editor for CSS, Less & Sass - Magic CSS screenshot 1

About

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
✓ CSS reloader
✓ Option to reapply styles automatically
✓ Syntax Highlighting
✓ Auto-generate CSS selectors with point-and-click
✓ Emmet support
✓ Color picker
✓ Convert code from Less/Sass to CSS
✓ Beautify / Format code
✓ Minify code
✓ Highlight DOM elements matching the CSS selectors
✓ Option to load this extension in iframes as well
✓ Get SVG icons
✓ Lint CSS code

This extension is available for:

✓ Google Chrome
✓ Microsoft Edge
✓ Mozilla Firefox
✓ Opera

Open source:

✓ https://github.com/webextensions/live-css-editor

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You might want to use it for:

➤ No need to refresh pages to test your CSS/Less/Sass code
➤ Auto-save your changes to filesystem as you write the code
➤ Reload CSS resources without refreshing the page
➤ Speed-up development by writing code directly on your page
➤ Develop and test your code before finalizing your changes
➤ Apply some temporary styles (like hiding some components)
➤ Do CSS changes on any website

Notes:

➤ The CSS/Less/Sass code you write gets applied as you write it
➤ The CSS reloader watches CSS files and live updates them immediately
➤ You can develop the code and see the output at the same time
➤ The code is saved in file/browser as soon as you write it
➤ The code editor is draggable and resizable
➤ Use code editor in external window for developing responsive pages
➤ The code you write is auto-saved for the site
➤ You can use "TAB" key to indent your code
➤ Running Magic CSS again, while it is already loaded, disables the code
➤ Press "Esc" or click on close to hide it
➤ The code is added at the bottom of the <body> tag
➤ It includes CSS/Less/Sass beautifier
➤ It includes CSS minifier
➤ It highlights the DOM elements matching the CSS selectors
➤ Use it along with Chrome/Edge/Firefox/Opera Developer tools
➤ You might find it useful in creating your custom themes for websites based on Stylish / Stylist
➤ This extension was previously known as "MagiCSS - Live CSS Editor"

Security and privacy:

ⓘ No permissions approval is required for installing the extension
ⓘ For advanced features, like "Apply styles automatically", permissions are requested on-demand
ⓘ Mixpanel is used to get anonymized stats for improving UX
ⓘ Browser extension's storage, localStorage etc are utilized for the extension's core features.

Visit https://webextensions.org/ for further details.

Created by:

➤ Priyank Parashar - https://linkedin.com/in/ParasharPriyank/

Connect with us:

➤ https://webextensions.org/
➤ https://github.com/webextensions/live-css-editor
➤ https://twitter.com/webextensions