HTML 格式化工具
免费的 HTML 格式化和压缩工具。使用 Prettier 的默认缩进和属性换行风格进行美化，或者将 HTML 折叠成单行用于生产。在浏览器中运行，无需上传。
Runs in your browserUpdated Apr 26, 2026
HTML Input
Output
常见问题
›Which HTML formatter is this?
Prettier's HTML parser with default settings — 2-space indent, 80-column target, attribute per line when the tag overflows. The minifier is a lightweight whitespace collapser that preserves <pre>, <script>, <style> and <textarea> content byte-for-byte.
›Will it break my <pre>, <script>, or <style> blocks?
No — those blocks are protected from whitespace collapse during minification. Their content is extracted, the rest of the document is minified, then the blocks are restored verbatim.
›Does it work on HTML fragments, not just full documents?
Yes. Paste a <div>...</div> or any partial tree; Prettier handles it the same way it handles a full document.
›Is my HTML uploaded?
No — formatting and minification run entirely in your browser. Safe for sensitive markup.