Is my Less code sent to a server?

No. All formatting runs entirely in your browser with JavaScript. Nothing is transmitted anywhere and your code never leaves your device.

Does this handle nested selectors and the parent selector (&)?

Yes. The formatter tracks brace depth so nested rules, mixin calls, and the & parent selector are indented at the correct level automatically.

Yes. Interpolation braces are recognized as part of the surrounding value or selector, so they are not mistaken for a nested rule block.

Yes. Less variables (@name: value;), mixin calls (.mixin();), and guard clauses (when (...)) are all indented like any other rule or declaration.

No. This tool only reformats Less syntax for readability. It does not compile Less to CSS or resolve variables, mixins, or imports.

Name: Less Formatter
Availability: InStock
Author: Nham Vu

Paste Less and get clean, consistently indented, correctly nested output instantly in your browser.

Paste Less here

Formatting Options

Indent style

Indent size

Blank line between top-level rules Preserve comments

Paste Less on the left and click Format Less.

Paste Less and get clean, consistently indented, correctly nested output instantly in your browser.

Paste your Less into the input textarea on the left.
Choose your preferred indent style and size, and toggle blank lines or comment preservation.
Click Format Less to process the input.
Review the formatted, correctly nested output on the right, with live line and byte counts.
Click Copy to copy the formatted Less to your clipboard.

Unminify third-party or bundled Less for debugging and readability.
Standardize indentation across partials before committing to source control.
Clean up nested rules, mixins, and variables pasted from Stack Overflow or documentation.
Reformat Less exported from a build tool or design handoff before reviewing it.
Check that deeply nested selectors and interpolation still compile after a quick edit.

Last updated: 2026-07-23 · Reviewed by Nham Vu