Unminify LESS Online — Free LESS Formatter

Unminify minified LESS instantly. Restore readable formatting — browser-only.

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LESS Unminification

Unminify LESS online.

Features

Restore readable LESS from minified input.

Unminify LESS

Restore readable LESS from minified input.

Basic example

Minified LESS

@brand-color:#2563eb;.panel(@padding:12px){padding:@padding;border:1px solid @brand-color}.widget{color:@brand-color;.panel(16px);.label{font-size:14px;font-weight:600}}

Formatted LESS

@brand-color: #2563eb;
.panel(@padding:12px) {
  padding: @padding;
  border: 1px solid @brand-color;
}
.widget {
  color: @brand-color;
  .panel(16px);
  .label {
    font-size: 14px;
    font-weight: 600;
  }
}

Formatting options

Print width

Controls when Prettier wraps long lines — tighter for dense queries, wider for nested SDL.

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.

Unminify JS

Unminify CSS

Unminify JSON

Unminify HTML

Unminify XML

Unminify SVG

Unminify SQL

Unminify YAML

Unminify TypeScript

Unminify SCSS

Unminify TOML

Explore other tool categories

Minify

Shrink code and assets for production — minify JavaScript, CSS, HTML, JSON and XML before gzip or CDN deploy.

Beautify

Make code readable with consistent indentation — beautify JavaScript, CSS, TypeScript, SCSS, LESS, Markdown, GraphQL, SQL, YAML and more in your browser.

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.