Beautify LESS Online — Free LESS Beautifier
Beautify LESS stylesheets instantly with Prettier. All processing in your browser.
Features
Format LESS with @variables and mixins.
Format LESS with @variables and mixins.
Basic example
LESS source
Beautified LESS
Formatting options
Adjust tab width, tabs vs spaces, and quote style in the toolbar.
Prettier-powered formatting
Uses the PostCSS parser for LESS syntax. Compare with CSS beautifier for plain stylesheets.
Local processing & data handling
Your Less is parsed and reformatted in-browser with Prettier. No uploads, no server-side storage, and no account required — suitable for proprietary schemas, queries, and internal docs.
FAQ — Beautify LESS
Beautification
LESS vs SCSS?
Pick the tool matching your preprocessor — SCSS beautifier for Sass.
Need to unminify?
Use the LESS unminifier.
Is my Less uploaded to a server?
No. Beautification runs entirely in your browser — your Less never leaves your device and is not stored by FastMinify.
Beautify vs unminify — which should I use?
Beautify formats readable Less; unminify restores compressed output — try the Less unminifier. For day-to-day formatting, stay on Less beautifier.
Can I customize indentation?
Yes — pick 2 or 4 spaces or tabs in the Beautify options toolbar.
Beautify
Make code readable with consistent indentation — beautify JavaScript, CSS, TypeScript, SCSS, LESS, Markdown, GraphQL, SQL, YAML and more in your browser.
Explore other tool categories
Minify
Shrink code and assets for production — minify JavaScript, CSS, HTML, JSON and XML before gzip or CDN deploy.
Unminify
Expand minified or compressed code — unminify JavaScript, CSS, TypeScript, SCSS, LESS, SQL, YAML and other formats when debugging or reviewing.
Conversion
Transform data between JSON, YAML, XML and CSV locally — no server uploads.
CSS preprocessors
Compile SCSS or LESS to standard CSS in the browser — pair with beautify or minify for a full stylesheet workflow.
JSON Tools
Validate, format, diff and explore JSON payloads — complementary to minifiers and converters.
SVG Tools
Preview, optimize with SVGO, export Data URI, resize, beautify, convert to JSX and validate SVG — all in your browser.
DevOps & Infra
Terraform HCL format/validate/minify, Dockerfile format & lint, Docker Compose and .env validation.
CI/CD
GitHub Actions and GitLab CI — format YAML and check workflow/job structure in your browser.
Logs & observability
Line-oriented JSON/NDJSON and Nginx/Apache access logs — format, filter, validate, and CSV/TSV.
Kubernetes
Multi-doc manifests, structural validate, Ingress/Deployment starters, and Helm values formatting.
Networking / IP
CIDR, subnets, and IPv4/IPv6 helpers — in your browser.
Security & tokens
JWKS, X.509 certificates, and secrets scan — browser-local.
API & schemas
OpenAPI tools to format, validate, and lint your specs.
Encoding
Encode or decode Base64, URL components and HTML entities — client-side only.
Developer utilities
Timestamps, UUID, ULID, Nanoid, cron, passwords, regex, slugify, number bases, case, text diff, and chmod — all client-side.
Text & Markdown
Count words, build Markdown TOCs, and clean line lists — all in your browser.
AI & LLM
Token counting, pricing estimates, and context-window fit — 100% browser-local.
Serialization
Serialize and deserialize PHP data structures beside JSON workflows.