Compile SCSS to CSS Online — Browser SCSS Compiler
Compile SCSS to standard CSS with Dart Sass in your browser. Output style, source maps and deprecation warnings are configurable — nothing is uploaded.
Developer notes
• SCSS syntax only — indented .sass files are not supported. • External @import / @use (node_modules, CDN, other files) cannot resolve in the browser — paste all code in the editor. • Auto-compile runs on paste and sample load; typed edits require Compile (⌘↵). • Source maps are inlined as a data: URI comment in the CSS output. • Pair with beautify-scss or minify-css for the full pipeline.
Options
When teams pick this route
• Convert a SCSS snippet from a design system doc to plain CSS. • Preview compressed output before pasting into a CMS. • Teach SCSS variables and nesting with instant CSS feedback. • Prototype mixins without installing Dart Sass locally.
Worked examples
Variables and nesting
SCSS input
Compiled CSS
Mixin with parameters
SCSS input
Compiled CSS
Navigate related tools
Beautify SCSS with beautify SCSS, decompress with unminify SCSS, or browse the CSS preprocessors hub.
SCSS compiler FAQ
Browser-only compilation
Why can't I use @import for external libraries?
This tool runs entirely in your browser with no filesystem access. @import or @use paths that point to node_modules, CDNs or other project files cannot be resolved. Paste the full SCSS you need into the editor.
Does it support indented SASS syntax?
No — only SCSS curly-brace syntax (.scss) is supported. Indented .sass files are out of scope.
When does compilation run automatically?
On paste and when loading a sample. While typing, use the Compile button or ⌘↵ — live compilation on every keystroke is intentionally disabled.
CSS preprocessors
Compile SCSS or LESS to standard CSS in the browser — pair with beautify or minify for a full stylesheet workflow.
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.
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.
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.
Serialization
Serialize and deserialize PHP data structures beside JSON workflows.