A LESS formatter restructures LESS CSS code with consistent indentation, proper nesting, and organized variable declarations so stylesheets are easy to read, review, and maintain. LESS extends CSS with variables, nested rules, and mixins that compile down to standard CSS.
Formatted LESS will appear here...Example LESS Patterns
How to Use the LESS Formatter
LESS files from production builds, copy-pasted snippets, or minified sources are often hard to read. A LESS formatter restores structure by applying consistent nesting indentation, organizing variable declarations, and aligning property assignments — making it fast to understand, debug, or extend a stylesheet.
Step 1: Paste Your LESS Code
Copy your LESS source — minified, poorly indented, or straight from a library — and paste it into the input area. The formatter accepts all LESS syntax: variables (@primary: #333), nested selectors, mixin definitions and calls, & parent references, @import directives, and standard CSS properties.
Step 2: Choose Indentation
Select your preferred indentation style: 2 spaces for compact output, 4 spaces for wider readability, or a tab character to match your editor settings. Click Format LESS to apply.
Step 3: Copy or Download
The formatted LESS appears on the right with syntax highlighting. Click Copy to place it on your clipboard or Download to save it as a .less file. The character and line count updates automatically.
LESS Formatting Best Practices
Well-formatted LESS is easier to maintain and review. Standard conventions: each property on its own line, nested rules indented one level per depth, @variable declarations grouped at the top of their scope, blank lines between unrelated rule blocks, and @import statements at the top of the file. The minifier is useful for reducing LESS payload before you hand it to a LESS compiler.
What Is LESS?
LESS (Leaner Style Sheets) is a CSS preprocessor that adds programming constructs to CSS. Key features: variables (@color: #4d90fe), nested rules that mirror HTML structure, parameterized mixins for reusable blocks, arithmetic operations, and loops. LESS compiles to standard CSS before the browser sees it, either at build time or via less.js in the browser.
FAQ
Is the LESS formatter free?
Yes, completely free with no signup required. Format unlimited LESS CSS files in your browser.
Is my LESS code safe?
Yes. All formatting runs locally in your browser. Your code is never sent to any server.
What LESS features does the formatter support?
The formatter handles LESS-specific features including nested selectors, @variable declarations, .mixin() calls and definitions, & parent selector references, @import statements, and standard CSS properties.
What is the difference between LESS and CSS?
LESS extends CSS with features like variables (@color: red), nested rules, mixins (reusable blocks), and operations. LESS code compiles to standard CSS before being used in a browser.
Can I minify my LESS code?
Yes. The Minify button strips comments and collapses all whitespace into a single line, ideal for reducing payload before compilation.
How do I format LESS with proper nesting?
Paste your LESS code and click Format. The formatter places each property on its own line, adds proper indentation for nested rules, and groups @variable declarations near the top.
Does the formatter work with LESS mixins?
Yes. Mixin definitions (.mixin()) and calls are formatted with proper indentation. Guard conditions and parameters are preserved on the same line.