Formatting and validating XML usually means using an IDE or a CLI. The XML Formatter does it in the browser: paste XML and get pretty-printed, indented output with validation—no sign-up and no data sent to a server.
XML Formatter formats and beautifies XML with consistent indentation and validates syntax. You can also minify XML. All processing is client-side. Malformed XML will show parsing errors with helpful messages. You can switch between formatted and minified output. Formatting and validation run in your browser; your data is never uploaded or stored. Use it to pretty-print API or config XML, find syntax errors, or minify for production.
Key Features
- Format and validate — Consistent indentation and syntax validation. Malformed XML shows parsing errors with helpful messages.
- Validate — Yes. Malformed XML will show parsing errors with helpful messages.
- Minify — Yes. You can switch between formatted and minified output.
- Privacy — No. Your XML is not sent to a server. Formatting and validation run in your browser. Your data is never uploaded or stored.
- No account — Use as often as you need without sign-up.
- Invalid XML — Check for unclosed tags, mismatched quotes in attributes, or invalid characters. The error message usually points to the line or position.
- Open the XML Formatter tool.
- Paste your XML. Choose format or minify. View the result or error.
- Copy the output. Use the "Use tool" button on the docs page if you are reading this from the documentation.
Real Use Cases
- Pretty-print API XML — Paste a minified XML response and get readable, indented output. Debug and inspect structure.
- Find syntax errors — Validate config or feed XML. Get line or position for unclosed tags, bad quotes, or invalid characters.
- Minify for production — Switch to minified output for smaller payloads or config files. Same data, less whitespace.
- Documentation — Format sample XML for docs or tutorials. Readers can scan structure easily.
- Integration — Verify XML before sending to an API or after receiving. Ensure well-formed before parsing in code.
- Teaching — Show XML structure with clear indentation. Explain nesting and attributes.
- vs. JSON Formatter — JSON Formatter formats JSON. This tool formats XML. Use the right tool for the format.
- vs. YAML to JSON — YAML to JSON converts YAML. This tool formats and validates XML. Different format.
- vs. HTML Minifier — HTML Minifier minifies HTML. XML has different rules. Use this tool for XML.
- vs. IDE/CLI — No install. Works in the browser. Good for one-off or quick validation.
Check for unclosed tags, mismatched quotes in attributes, or invalid characters. The error message usually points to the line or position if the tool says your XML is invalid.
Benefits for Developers, DevOps, and Technical Writers
- Developers — Format and validate XML for APIs or config. No script needed.
- DevOps — Validate XML config or feeds before deploy. Client-side, no server.
- Technical writers — Produce readable XML samples for docs.
Common Mistakes
- XML invalid — Check for unclosed tags, mismatched quotes in attributes, or invalid characters. The error message usually points to the line or position.
- Expecting JSON — This tool is for XML. For JSON use JSON Formatter.
- Wrong encoding — XML with special characters may need correct encoding declaration. Ensure UTF-8 or match declaration to content.
- Forgetting to copy — The result is not saved. Copy before closing the tab.
Frequently Asked Questions
It formats and beautifies XML with consistent indentation and validates syntax. You can also minify XML. All processing is client-side.
Does it validate XML?
Yes, malformed XML will show parsing errors with helpful messages.
Can I minify XML?
Yes, you can switch between formatted and minified output.
Is my XML sent to a server?
No. Formatting and validation run in your browser. Your data is never uploaded or stored.
Use it to pretty-print API or config XML, find syntax errors, or minify for production.
Why does it say my XML is invalid?
Check for unclosed tags, mismatched quotes in attributes, or invalid characters. The error message usually points to the line or position.
XML Formatter gives you readable, valid XML in seconds: paste, format or minify, copy. No account, no server round-trip. For JSON use JSON Formatter, for YAML use YAML to JSON, and for HTML use HTML Minifier.
Use the XML Formatter tool to format and validate XML.