📌 Overview

Pretty-print and validate XML with proper indentation. Spot mismatched tags quickly and make config or RSS files human-readable.

📰 XML Formatter

Pretty-print and validate XML with proper indentation. Spot mismatched tags quickly and make config or RSS files human-readable.

XML

Paste XML and click Format.

🔒 All processing happens in your browser. No data is uploaded to any server.

📋 How to Use

Paste your XML into the box.
Click "Format".
Read the indented output or any error.
Copy the formatted XML.

❓ FAQ

Does it validate XML?

It uses the browser DOM parser, so malformed XML (unclosed or mismatched tags) will report an error instead of producing output.

Are attributes preserved?

Yes. Attribute names and values are kept exactly as in the source.

Will it change my data?

No. It only adds whitespace for readability; element and attribute content are unchanged.

❓ More Questions

Does it validate XML?

It uses the browser DOM parser and reports an error on unclosed or mismatched tags instead of producing output.

Are attributes preserved?

Yes - attribute names and values are kept exactly as-is.

💡 Use Cases

⚙️

Config Files

Tidy up application XML configs.

📰

RSS/Atom

Make feeds readable for debugging.

🔄

Interop

Prepare XML before sending to APIs.

🔗 Related Tools

📖 Deep Dive: XML Formatter

Why format XML

XML is common for config and data exchange, but XML flattened into one line is very hard to read. Pretty-printing with indentation quickly exposes structural issues.

How it works

The tool uses the browser's XML parser to turn the document into a node tree, then serializes it back with two spaces of indentation per level; a parse failure means the structure is wrong.

A quick example

Paste a flattened API-response XML and after formatting every tag is neatly nested; unclosed nodes are spotted immediately.