Beautify and format HTML code with proper indentation
Free online HTML Beautifier to format and beautify HTML code with proper indentation. Convert minified or messy HTML into clean, readable code. Also minify HTML into a compact single-line format for production workflows. Handles common self-closing tags, supports quick copy, and processes code in your browser.
Properly formatted HTML improves readability, makes debugging easier, and helps with code reviews. Beautify is used during development to work with clean code. Minify is used for production to reduce file size and improve load time. Typical workflow: develop with beautified code, minify before deploying.
Beautifying HTML is helpful when reviewing markup, debugging nested elements, comparing layout changes, or reading code generated by a CMS, email builder, page builder, or minifier. Clear indentation makes parent-child relationships easier to scan and reduces mistakes during manual editing.
Minifying HTML removes unnecessary whitespace to make markup smaller for production. It is useful for templates, landing pages, static exports, and email snippets. For full production pipelines, you may still want a dedicated build tool that can also optimize assets, remove comments, and validate output.
HTML formatters are best used with valid markup. If the input has broken tags, unusual templating syntax, or framework-specific attributes, review the output before replacing your source file. For React or JSX, use a formatter designed for JSX syntax instead of a plain HTML formatter.
HTML Beautifier Online is useful when you need to complete a focused task quickly without installing desktop software, creating another account, or switching into a heavy workflow. It works well for quick checks, conversions, previews, cleanups, generation tasks, and everyday operations where speed and consistency matter. Free online HTML Beautifier to format and beautify HTML code with proper indentation. Convert minified or messy HTML into clean, readable code. Also minify HTML into a compact single-line format for production workflows. Handles common self-closing tags, supports quick copy, and processes code in your browser.
Start with a small sample so you understand how HTML Beautifier Online handles your input, then apply it to the full task. Review the important fields, copy or export the result, and test it in the place where you plan to use it. This keeps the tool fast while still giving you a practical quality-control step before production use.
This tool is optimized for plain HTML. JSX has syntax differences (className instead of class, camelCase attributes). For JSX, use Prettier with the JSX plugin or VS Code's built-in formatter.
No, the minify function only removes whitespace and line breaks, preserving comments. For full minification including comment removal, use a build tool like html-minifier.
The formatter is designed to process code in your browser. If you work with sensitive code, you can also verify network activity in your browser DevTools.
The beautifier uses 2 spaces per indentation level, which is the most common standard for HTML. This is not currently configurable.
The tool does its best with malformed HTML but may produce unexpected results. For best output, start with valid HTML structure.
Yes. HTML Beautifier Online is designed as a free browser-based utility for quick personal, learning, and professional workflows.
No. You can use HTML Beautifier Online directly in a modern browser such as Chrome, Edge, Safari, or Firefox.
Yes. The page is responsive and can be used on phones and tablets, although desktop is usually more comfortable for long input or repeated copy operations.
Use clean input, test with a small sample first, review the output carefully, and adjust any details that depend on your final use case.
In most cases, yes. You can use the generated or processed output in personal and commercial projects, but legal, financial, medical, or security-sensitive work should still be reviewed by a qualified person.
The tool is built for quick browser workflows. You should still avoid entering highly sensitive data unless the specific tool clearly states how the data is handled.
Many tools include copy or download actions. If a dedicated export is not available, you can usually copy the visible result manually.
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Tạo file .env và .env.example cho dự án.
Tạo .gitignore cho Node.js, Python, Java.
Tạo mock JSON data cho API testing.
Format và phân tích API response.
Test REST API: GET, POST, PUT, DELETE.
Giải thích regex, flags, capture group và cảnh báo pattern dễ lỗi.
Tạo OpenAPI JSON/YAML với params, auth và request body.
Chuyển đổi Binary, Hex, Base32.
Mã hóa/giải mã Base64.
Chuyển đổi Decimal, Binary, Hex.
Tạo CSS box-shadow trực quan.
Tính quyền file Linux.
