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.

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HTML Beautification

Beautify HTML online. Consistent indentation and spacing — instant browser processing, no uploads.

Features

Format HTML markup with consistent indentation and line breaks without changing browser rendering.

Beautify HTML

Format HTML markup with consistent indentation and line breaks without changing browser rendering.

Basic example

Minified HTML

<!DOCTYPE html><html><head><title>Checkout Dashboard</title><meta charset="utf-8" /></head><body><header class="site-header"><h1>FastMinify Store</h1></header><main><section class="cart"><h2>Your cart</h2><p>3 items ready for checkout.</p></section></main></body></html>

Beautified HTML

<!DOCTYPE html>
  <html>
    <head>
      <title>Checkout Dashboard</title>
        <meta charset="utf-8" />
      </head>
      <body>
        <header class="site-header">
          <h1>FastMinify Store</h1>
          </header>
          <main>
            <section class="cart">
              <h2>Your cart</h2>
                <p>3 items ready for checkout.</p>
                </section>
              </main>
            </body>
          </html>

Minification options

Beautify Options

Indentation options for Beautify and Unminify (not used by Minify)

Indentation size

Number of spaces (or tab width) used when formatting HTML.

Indent type

Use spaces or tabs for indentation when beautifying HTML.

How to Unminify HTML Online

HTML unminification restores readable formatting to compressed HTML documents. Paste any minified HTML into our tool and click Unminify to add proper indentation, organize nested elements, and format attributes. This is essential for debugging production websites, inspecting minified templates, or reviewing HTML generated by CMS platforms.

HTML Minification — What Gets Removed

HTML minification removes unnecessary whitespace between tags, HTML comments, optional closing tags, redundant attributes, and empty attribute values. It preserves all content, inline styles, scripts, and structural elements. Your page will render identically in all browsers after minification. Minification does not escape untrusted text for safe HTML output—when you need to preview or debug entity escaping on a snippet, use our HTML entities tool.

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.

Beautify JS

Beautify CSS

Beautify JSON

Beautify XML

Beautify SVG

Beautify SQL

Beautify YAML

Beautify TypeScript

Beautify SCSS

Beautify LESS

Beautify Markdown

Beautify GraphQL

Beautify TOML

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.