XMLパーサー / 整形ツール

XML Parser & Formatter

XML still powers SOAP web services, RSS feeds, Android resources, and Office documents (docx, xlsx). This parser validates XML in real time and lets you explore the structure with a collapsible tree.

Features

• Collapsible tree view — +/− toggles for nested elements
• Real-time validation as you type
• Format / Minify — 2-space, 4-space, or tab indentation
• Error location — pinpoints the offending line
• Syntax highlighting — tag names (purple), attributes (orange), values (green), comments (gray), CDATA (blue)
• Copy / Download as .xml file
• 100% client-side — input never leaves your browser

Common XML errors

• Case mismatch — <Book>...</book> (XML is case-sensitive)
• Unescaped entities — use &, <, >
• Unclosed tags — every opening tag needs closure or self-close <br />
• Unquoted attributes — id=1 fails, use id="1"
• Multiple roots — XML requires exactly one root element

Related tools

• JSON Parser / Formatter
• YAML ↔ JSON ↔ TOML Converter
• Text Diff