Online HTML Formatting | HTML Code Beautification, Compression, Optimization Tool

This free online HTML formatting tool, based on the open-source Prettier engine, supports one-click HTML beautification, indentation, and compression, making code clearer and more readable while reducing redundant characters to improve web page performance. No download or installation required; use it online directly. It's suitable for front-end developers, website optimization, and code review scenarios.

Creative Inspiration

In daily development, HTML code often becomes messy due to multiple collaborations or frequent revisions. To improve code readability and maintenance efficiency while also optimizing website performance, this online HTML formatting and compression tool, built on Prettier, helps developers quickly unify their coding style.

How to Use

1. Paste the HTML code into the input box above.

2. Click "Format" to optimize indentation, alignment, and structure.

3. Click the "Copy" button to paste the formatted HTML code into your project.

Application Scenarios

• Quickly beautify HTML in front-end development and improve team collaboration efficiency.

• SEO optimization ensures structured code is more conducive to search engine crawling.

• Tutorials and code examples ensure intuitive and clear HTML structure.

Implementation Principle

Based on the open-source Prettier framework, AST (Abstract Syntax Tree) parsing automatically identifies HTML tags and hierarchical relationships, enabling intelligent indentation and beautification. It also removes unnecessary whitespace, line breaks, and comments, ensuring optimized file size without affecting rendering.

FQA

1. Does formatting change the HTML structure?

   No, formatting only adjusts indentation and alignment; it does not delete valid tags or attributes.

2. Does minified HTML affect the display quality?

   No, minification only removes redundant characters and comments and does not change the page rendering.

3. Does it support HTML5 and common tags?

   It supports HTML5 standards and common semantic tags and is compatible with major browser environments.

4. Can it process HTML with inline CSS/JS?

   Yes, the tool will preserve the inline code and only adjust the HTML structure.

5. Is it suitable for SEO scenarios?

   Yes, formatting improves code readability, and compression reduces load size, both of which help with search engine indexing.