Beautify HTML Online — Free HTML Beautifier
Beautify HTML documents instantly with our free online tool. Format markup with consistent indentation. All processing in your browser.
Features
Format HTML markup with consistent indentation and line breaks without changing browser rendering.
Format HTML markup with consistent indentation and line breaks without changing browser rendering.
Basic example
Minified HTML
Beautified HTML
Minification options
Indentation size
Number of spaces (or tab width) used when formatting HTML.
Indent type
Use spaces or tabs for indentation when beautifying HTML.
Frequently Asked Questions — Beautify
Everything about beautification
What does the HTML beautifier do?
It formats markup with consistent indentation without changing browser rendering.
Beautify vs minify?
Beautify for readability; minify HTML for production payloads.
Beautify vs unminify — which should I use?
Beautify formats readable HTML; unminify restores compressed output — try the HTML unminifier. For day-to-day formatting, stay on HTML beautifier.
Is my HTML uploaded to a server?
No. Beautification runs entirely in your browser — your HTML never leaves your device and is not stored by FastMinify.
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.
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.
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.