LESS Formatter
Format and beautify LESS CSS preprocessor code with clean indentation
LESS Formatting Tips
- Keep nesting depth to 3 levels max to maintain readability and specificity control.
- Group related variables and mixins at the top of your LESS file.
- Use one property per line for easier code review and diff comparison.
Professional LESS Formatter Processing Features
Everything you need to work with LESS Formatter data efficiently and professionally
LESS Syntax Support
Full support for LESS-specific syntax including variables, mixins, guards, and detached rulesets.
Beautify LESS Code
Transform messy LESS code into clean, consistently indented code with proper nesting and spacing.
Nested Rule Formatting
Properly indent nested selectors and maintain clear parent-child relationships in LESS rules.
Mixin Formatting
Correctly format mixin definitions, calls, parametric mixins, and pattern matching.
Prettier Powered
Uses the industry-standard Prettier formatter engine for reliable and consistent output.
Variable Alignment
Organize and align LESS variables and calculations for cleaner stylesheet maintenance.
How It Works
Simple steps to process your LESS Formatter like a pro
Paste Your LESS
Paste your LESS code into the input area, or load a sample stylesheet to get started.
Customize Options
Choose indentation size and formatting options to match your project standards.
Format & Review
Click the format button to beautify your LESS code and review the clean output.
Copy or Download
Copy the formatted LESS code to your clipboard or download it as a file.
Professional LESS Formatter Formatter & Validator
LESS Formatter processing runs entirely in your browser — no uploads, no accounts, no limits.
Processing method
Use this tool’s examples, syntax limits and source documentation to understand its output.
Key Technical Features:
- • Prettier-powered LESS formatting engine
- • Support for variables, mixins, and nested rules
- • Handles LESS-specific functions and operations
- • Client-side processing for maximum security and speed
- • Support for large files up to 10MB
Processing and output
Check the stated processing method and compare the result with your input before using it.
Security & Privacy:
- • 100% client-side processing - data never sent to servers
- • No tracking, cookies or data collection
- • HTTPS encryption for secure connections
- • No data stored or cached after processing
- • GDPR and CCPA compliant approach
Why Professionals Choose EZ Formatter
Your data stays in your browser
Frequently Asked Questions
Common questions about Less Formatter formatting answered
Yes, our LESS formatter is completely free with no registration required. All processing happens in your browser.
Yes, our formatter properly handles LESS variables (@variable), mixins, guards, and merge properties.
The LESS formatter specifically understands LESS preprocessor syntax including variables, nesting, mixins, and functions that a regular CSS formatter would not handle.
No. The formatter only adjusts whitespace and indentation. It never modifies selectors, properties, or values.
The formatter handles @import statements and plugin-specific syntax. Import resolution is not performed, only formatting.
Nesting with & parent references, variables (@width: 10px - the @ sigil, distinct from SCSS $), mixins with parameter lists and guard conditions (when (@a > @b)), .loop() recursive mixin patterns, and operations on numbers with units. The formatter recognizes all of these structurally without evaluating them.
Bootstrap 3/4-era codebases, enterprise design systems, and older admin themes still run Less in production. Formatting keeps those codebases readable during maintenance without a migration - and the formatter deliberately avoids rewriting @import paths or mixin calls, which differ from SCSS semantics.
Structurally they are identical (that is Less's design - every class can be a mixin); the formatter treats them the same and only normalizes spacing within parentheses of parameterized mixins (.border-radius(@radius: 4px)). Guards and the when keyword are left exactly as written since they change which mixin the compiler picks.
Authoritative References
Standards and official documentation that define the formats this tool works with.
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