Unminify LESS Online — Free LESS Formatter
Unminify minified LESS instantly. Restore readable formatting — browser-only.
Features
Restore readable LESS from minified input.
Restore readable LESS from minified input.
Basic example
Minified LESS
Formatted 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 — Unminify LESS
Unminification
Mixins supported?
Prettier formats standard LESS syntax; exotic plugins are out of scope.
Unminify
Expand minified or compressed code — unminify JavaScript, CSS, TypeScript, SCSS, LESS, SQL, YAML and other formats when debugging or reviewing.
Explore other tool categories
Minify
Shrink code and assets for production — minify JavaScript, CSS, HTML, JSON and XML before gzip or CDN deploy.
Conversion
Transform data between JSON, YAML, XML and CSV locally — no server uploads.
Encoding
Encode or decode Base64, URL components and HTML entities — client-side only.
Serialization
Serialize and deserialize PHP data structures beside JSON workflows.
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.
Beautify
Make code readable with consistent indentation — beautify JavaScript, CSS, TypeScript, SCSS, LESS, Markdown, GraphQL, SQL, YAML and more in your browser.
CSS preprocessors
Compile SCSS or LESS to standard CSS in the browser — pair with beautify or minify for a full stylesheet workflow.
Color & CSS Tools
Paste-local WCAG contrast checking with modern CSS color syntax — pair and matrix views, never uploaded.
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.
HTTP Tools
Paste-local cURL, HTTP messages, URLs, HAR files, and Cookie / Set-Cookie headers — format and inspect in your browser, never sent.
SEO / Web Tools
Generate meta tags, Open Graph, and Twitter Card output locally — previews simulated from your inputs, never fetched from your live site.
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.
Test Data
Synthetic field values for fixtures and DB seed — reserved-range phone numbers first.
Barcode labels
Draw Code 128, EAN-13, and UPC-A label images in the browser — PNG and SVG download, not a GS1 lookup.