How it works
How to use the CSS to LESS
Paste CSS
Paste your stylesheet or drop a .css file.
Convert
The output updates as you type; compile errors show their line and column.
Copy the LESS
Copy it or download it as a .less file.
How the conversion works
The CSS is then rebuilt as nested LESS: rules that share a selector prefix are grouped, pseudo-classes become &:hover-style children, and media queries stay as blocks.
Built for developers
Why developers use it
Private by design
Runs 100% in your browser. Nothing you paste is uploaded, logged or stored on a server.
Instant results
Output updates as you type, with precise error locations when something is wrong.
Works offline
Once loaded, the tool keeps working without a connection. Install it as an app if you like.
Free, no sign-up
No accounts, no limits, no watermarks.
FAQ
Frequently asked questions
Does it create LESS variables?
No. The converter restructures selectors into nested rules; add variables for repeated values afterwards.
Is anything sent to a server?
No. The compilers run in your browser as JavaScript/WebAssembly.
Is my data uploaded anywhere?
No. Everything runs locally in your browser — nothing you paste or open is sent to a server, logged or stored. The tool keeps working offline once the page has loaded.
Keep going
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