HTML Beautifier
Định dạng, căn lề code HTML dễ đọc
HTML Beautifier
The HTML Beautifier is a free online tool that formats and beautifies HTML code with clean, consistent indentation, turning minified or messy markup into readable, well-structured code in seconds. Whether you are debugging a web page, reviewing a colleague's template, or cleaning up HTML exported from a CMS, this HTML formatter makes the tag hierarchy immediately clear. No installation or sign-up required — paste your code and get beautifully formatted HTML instantly.
Benefits
Using an HTML beautifier saves time and reduces errors whenever you work with markup:
- Instantly converts minified or unformatted HTML into properly indented, human-readable code.
- Makes nested tag structures and DOM hierarchy visible at a glance, speeding up debugging.
- Produces consistently formatted output that improves team collaboration and code reviews.
- Helps catch unclosed tags or misplaced attributes by exposing the true structure of the markup.
Use cases
This tool is useful across a wide range of development and content workflows:
- Reformatting HTML minified by build tools before inspecting its structure or adding manual edits.
- Cleaning up HTML email templates copied from builders like Mailchimp, which often produce deeply nested, unreadable table markup.
- Beautifying HTML snippets embedded inside JavaScript files or server-side templates for easier reading.
- Standardizing markup pasted from WordPress, Shopify, or other CMS platforms that output inconsistent indentation.
How to use
Getting clean, formatted HTML takes just a few steps:
- Paste your raw or minified HTML into the input panel on the left.
- Click the Beautify button to process and reformat the markup automatically.
- Review the formatted output in the right panel, complete with correct indentation and tag alignment.
- Click Copy to copy the result to your clipboard, or download it as a formatted HTML file.
Frequently asked questions
Does the HTML Beautifier support HTML5 elements? Yes, the formatter fully recognizes HTML5 semantic elements such as article, section, nav, and figure, and indents them correctly within the document structure.
Is my HTML code sent to a server? No, all formatting is performed locally in your browser using JavaScript, so your markup never leaves your device.
Will beautifying my HTML change how the page renders? No, the tool only adjusts whitespace and indentation, which browsers ignore when rendering — the visual output of your page remains completely unchanged.
Can it handle HTML that contains inline CSS or JavaScript? Yes, the beautifier preserves the content inside <style> and <script> blocks without modifying it, while still formatting the surrounding HTML markup cleanly.