JavaScript & HTML圧縮器 / 整形器

JavaScriptとHTMLをオンラインで圧縮または整形。

Input Code (JavaScript)

0 文字

出力

About JS/HTML Formatting

Minifying JavaScript and HTML removes unnecessary characters like whitespace, comments, and line breaks to reduce file size and improve page load speed. Beautifying does the opposite — adding proper indentation and formatting for readability. This tool supports both JavaScript and HTML with instant results in your browser.

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How to Use

Select JavaScript or HTML mode
Paste your code in the input field
Click 'Minify' to compress or 'Beautify' to format
Copy the result

Common Use Cases

Minifying JS/HTML for production deployment
Beautifying minified code for debugging
Reducing page load times
Formatting code snippets for documentation

Frequently Asked Questions

Does minification change how my code works?

No. Minification only removes formatting — whitespace, comments, and line breaks. The code logic and behavior remain identical.

How much file size can I save?

Typically 20-50% for JavaScript and 10-30% for HTML, depending on the original formatting and comment density.

Is this a full JavaScript parser?

This is a lightweight formatter designed for quick minification and beautification. For production builds, use dedicated tools like Terser or esbuild.