HTML Beautifier

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FREE TOOL · NO SIGN-UP





This HTML beautifier turns minified, messy or copy-pasted markup into clean, indented HTML you can actually read. Paste your code, pick 2 spaces, 4 spaces or tabs, and click Beautify HTML to get neatly nested tags you can copy or download. It’s useful for developers debugging a template, SEOs reading page source and anyone cleaning up HTML from an editor.













What an HTML Beautifier Does





An HTML beautifier, also called an HTML formatter or pretty printer, rewrites the layout of your markup without changing what it means. It adds line breaks between tags and indents each nested level so the structure of the page is obvious.





Indenting nested tags





HTML is a tree. A <ul> holds <li> items, a <div> holds paragraphs, a <table> holds rows and cells. In minified code that tree is squashed into one long line, and finding where a section ends is guesswork. The beautifier puts each opening tag on its own line and indents everything inside it by one level, then steps back out at the closing tag.





Void elements such as <img>, <br>, <meta>, <link> and <input> have no closing tag, so they don’t increase the indent. Short inline elements that only wrap text, like <a>, <strong>, <span> or a heading, stay on one line so the output doesn’t become a wall of tiny fragments.





Whitespace-sensitive elements





Some elements care about every space and line break. Content inside <pre> and <textarea> is displayed exactly as written, and re-indenting it would change what the visitor sees. Script and style blocks contain JavaScript and CSS, which an HTML formatter shouldn’t reshape. This tool keeps all four of those blocks as they are and only formats the HTML around them. If you need to tidy CSS or JavaScript too, use the dedicated beautifiers linked at the end of this page.













How to Beautify HTML





Step 1 – Paste HTML





Paste your markup into the HTML box. It can be a full document, a template partial or a snippet copied from your browser’s page source or developer tools.





Step 2 – Choose indent





Use the Indent dropdown to pick 2 spaces, 4 spaces or a tab. Match whatever your project or team already uses, so the formatted code drops into your files without creating a noisy diff.





Step 3 – Format





Click Beautify HTML. The formatted result appears in the output panel with syntax highlighting, along with the input and output character counts. Formatted code is usually longer than the input because of the added whitespace, which is expected.





Step 4 – Copy or download





Click Copy to put the result on your clipboard, or Download to save it as an index.html file. Use Clear to empty the box and start again.













Formatting vs Validating HTML





A beautifier changes how code looks. A validator checks whether the code follows the HTML specification. They solve different problems, and you’ll often want both.





Unclosed tags





Indentation is a quick way to spot structural problems. If you forget to close a <div>, everything after it ends up indented one level too deep, and the closing </body> won’t line up with <body>. When the indentation drifts, scroll up from the point where it goes wrong and look for a missing closing tag.





The beautifier doesn’t repair broken markup. It formats what you give it, so an unclosed or mismatched tag stays unclosed. That’s deliberate: silently “fixing” code can hide the real bug.





Using the W3C validator





To check for errors properly, run the page through the W3C Markup Validation Service. It reports missing tags, invalid attributes, duplicate IDs and elements used in the wrong place. A good workflow is to beautify first, so the line numbers in the validator’s report point to readable code, then fix each error and format again.













Cleaning HTML from Editors and Email Builders





Word and CMS junk markup





HTML copied from word processors, page builders and some CMS editors often comes with extra wrapper elements, empty spans and proprietary attributes. Beautifying it is the first step to cleaning it up, because once each tag sits on its own line you can see which wrappers do nothing and delete them. If you only need the words, our HTML to Text Converter strips the markup completely.





Inline styles





Email builders and visual editors tend to put style="..." attributes on almost every element. The beautifier keeps those attributes, but collapses extra whitespace inside tags so they’re easier to scan. Long inline styles are a sign that the styling belongs in a stylesheet. For emails, inline styles are often necessary, so tidy them carefully rather than removing them.













Beautify for Editing, Minify for Speed





Build tools





Formatted code is for people. In most projects, you edit readable source files and let a build step or caching plugin minify the output that visitors download. Code formatters in your editor can apply a consistent style automatically every time you save, which keeps team code reviews focused on logic instead of spacing.





Effect on page weight





Indentation and line breaks are extra bytes. On a large page that whitespace adds up, which is why production HTML is often minified. Gzip and Brotli compression shrink repeated whitespace well, so the difference after compression is usually smaller than the raw character count suggests. When you’re ready to ship, run the cleaned code through our HTML Minifier.













HTML Formatting Pitfalls





Whitespace in pre and inline elements





Spaces between inline elements can be visible on the page. Reformatting text and inline tags can occasionally add or remove a gap between words or buttons, so check the rendered result after formatting.





Breaking templates





Template files often mix HTML with PHP, Liquid, Handlebars or other template tags. A plain HTML formatter doesn’t understand those, so format a copy and review it before replacing the original.





Pasting scripts with secrets





Inline scripts can contain API keys or tokens. This tool runs in your browser and doesn’t upload your code, but it’s still good practice to strip secrets before pasting code into any web tool.













Make Any Markup Readable





Readable code is faster to debug, easier to review and much less stressful to edit. Use the HTML beautifier whenever you need to understand a page’s structure, then tidy your styles with the CSS Beautifier, clean up scripts with the JavaScript Beautifier and shrink the final file with the HTML Minifier. There are plenty more free developer and SEO utilities in the FHSEO Hub free SEO tools collection.













HTML Beautifier FAQs









An HTML beautifier reformats markup by adding line breaks and consistent indentation so nested tags are easy to read. It doesn’t change what the code does. It’s mainly used to make minified or messy HTML readable for editing, debugging, code review or learning how a page is built.









Formatting HTML rarely changes how a page looks, but it can in edge cases. Whitespace between inline elements, such as links or buttons placed side by side, can be rendered as a small gap. This tool leaves pre, textarea, script and style content untouched to avoid the most common problems.









To unminify HTML, paste the minified code into the beautifier, choose your indent size and click Beautify HTML. The tool splits the single long line into one tag per line with nested indentation. Comments and attribute values are kept, though anything removed during minification can’t be restored.









Minifying HTML in production is a sensible optimisation, especially for large pages, because it removes bytes visitors don’t need. Keep readable source files for editing and minify the output through a build step, caching plugin or our HTML Minifier. With compression enabled, the gain is usually modest but still worthwhile.









No, the beautifier doesn’t fix invalid HTML. It formats exactly what you paste, so unclosed or mismatched tags remain. The upside is that broken structure becomes easier to spot, because the indentation drifts out of line. Use the W3C Markup Validation Service to find and confirm the actual errors.