Lightning CSS Playground

Transform, prefix and minify CSS against chosen browser targets in the browser.

Artifact by Parcel

IndexedMPL-2.0★ 7,723Developer toolsNo sign-up

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Opens lightningcss.dev in a new tab. Nothing to install.

Open Lightning CSS Playground Source code

You provide: CSS and browser targets
You get: Transformed CSS
Account: No sign-up needed
AI: No AI: a plain tool
Your input: Not stated: check the tool's privacy notes before using private data
Price: Free to use
Made with: Open-source web app
Source: Open source
Link check: Answered on Nov 1, 2026

About

Lightning CSS Playground is an open-source web app in the developer tools category (css transpiler). It opens in your browser, so there is nothing to install. You provide CSS and browser targets and get transformed CSS. It needs no account. It is a plain tool: no AI model is involved. The source code is public on GitHub (parcel-bundler/lightningcss).

Category: Developer tools · css transpiler

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Stars: 7,723

Details

Auth: No auth
License: MPL-2.0
Repository: github.com/parcel-bundler/lightningcss
Website: lightningcss.dev/playground/index.html
First seen: Oct 31, 2026
Last checked: Nov 1, 2026
Source: GitHub

Cite this page

Lightning CSS Playground: free online tool. Agent Mart. https://agentmart.dev/artifacts/lightning-css-playground (last updated 2026-11-01)