This tool is an online HTML code formatting and compression tool that helps developers quickly beautify messy HTML code or compress code size to reduce transmission and loading time. All operations are performed locally in your browser, and code is never uploaded to any server.

Main Features

• Format/Beautify:Indent, line-break, and align compressed or messy HTML code according to standard style, improving code readability. Supports attribute line breaks, blank line preservation, and other options.
• Compress:Remove all excess whitespace, line breaks, and comments, shorten code length, reduce file size, and speed up page loading.
• Syntax Validation:Use the browser\'s native parser to check HTML structure integrity and quickly locate unclosed tags, syntax errors, and other issues.
• Rendering Preview:Render HTML code execution effects in real time to intuitively view page styles.

Difference Between HTML Formatting and Compression

• Formatting:Add indentation and line breaks to code, improving readability and facilitating team collaboration and code review.
• Compress:Remove all useless characters, reduce size, typically by 20%-40%, suitable for production deployment.

Main Use Cases

• Read or debug compressed HTML source code from third-party websites.
• Quickly beautify team members\' HTML code style in projects.
• Compress HTML code before deployment to reduce network transmission size.
• Troubleshoot HTML structure errors and verify tag closure.
• Format code snippets before sharing to improve readability.

Tool Features

• Single-column editing with line numbers: Input and output in the same text box with line numbers on the left, providing an IDE-like editing experience.
• Configurable options: Supports attribute line breaks, blank line preservation, comment removal during compression, whitespace merging, and more.
• Configurable indentation: Supports 2 spaces, 4 spaces, and Tab indentation styles.
• Real-time statistics: Displays code line count, character count, and estimated size in real time, making it easy to evaluate compression results.
• Rendering preview: One-click preview of HTML rendering effects, WYSIWYG.
• Safe and reliable: Pure front-end execution, no data uploaded, absolutely protects your code privacy.