Web & Design
Format and minify HTML, beautify XML and SOAP responses, and preview Markdown live, browser-side tools for cleaning up your markup.
About Web & Design
Markup rarely arrives in the shape you need it. A production HTML file is minified for speed, which makes it unreadable when you're debugging a layout issue. A SOAP response or enterprise XML export lands as one dense block with no indentation. And documentation written in Markdown needs to be checked against its rendered output before it ships. This category covers that gap between raw markup and something you can actually read or use.
HTML Formatter re-indents compressed or hand-mangled HTML so you can trace the DOM structure and spot mismatched tags. HTML Minifier does the reverse: once you're done editing, it strips whitespace, comments, and redundant characters to shrink the file for production, where every extra kilobyte affects load time. XML Beautifier applies the same readability treatment to XML, with particular attention to namespace-heavy documents like SOAP envelopes that are otherwise painful to scan by eye.
The Markdown editor is the exception to the cleanup theme — it's a live, side-by-side previewer for writing READMEs, documentation, or GitHub-flavored Markdown, so you can see exactly how tables, task lists, and formatting will render before you commit them. Like every tool on DevToolHub, all four process your markup locally, so source code, internal documentation, and API response bodies never leave your browser.