XML Formatter
Format, beautify and validate your XML data
Input
Output
What is XML Formatter?
Got messy XML that's impossible to read? This tool fixes that. It takes your XML and makes it readable – proper indentation, line breaks, everything organized. Whether you're debugging API responses, checking config files, or just trying to understand what your XML actually says, this makes it readable.
XML (eXtensible Markup Language) is widely used for data storage and configuration. The formatter follows XML standards, so your formatted XML is always valid and standards-compliant.
Best part? Everything happens instantly in your browser. No server uploads, no data storage – just paste, format, and copy. Your XML stays private. Check out the W3C XML Specification for more details.
How to Use the XML Formatter
Follow these steps to format and beautify your XML. Each step uses the actual buttons and panels on this page.
Paste, Upload, or Load Sample
Paste minified XML into the left Input panel, or click Upload to load a .xml file. Click Sample to see example telecomm XML. Example minified input:
<subscribers><subscriber><subscriberId>SUB-1001</subscriberId><plan>Unlimited 5G</plan><dataUsage>45.2</dataUsage></subscriber></subscribers>Invalid XML will show an error. Fix syntax errors first, then format again.
View Formatted Output
The right Output panel shows the formatted XML instantly. Nested elements get proper indentation. The formatter validates your XML per W3C XML specification – if it's valid, it formats; if not, you'll see an error.
Copy, Download, or Minify
Click Copy to copy the formatted XML to your clipboard. Click Download to save as a .xml file. Need compact XML for production? Click Minify to compress it. Use Clear on the input panel to start fresh. All processing runs in your browser.
When You'd Actually Use This
API Development
Format XML responses from APIs to understand the structure, debug issues, or document endpoints. Works great with SOAP APIs or REST APIs that return XML.
Config File Review
Reviewing XML configuration files? Format them first to see the structure clearly. Makes it easier to spot errors, understand settings, or compare different configurations.
Learning XML
New to XML? Formatting helps you understand the syntax. See how elements nest, how attributes work, and how data structures are organized. Much easier than reading minified code.
Debugging
Trying to find a bug in your XML? Formatting reveals the structure, making it easier to spot missing closing tags, incorrect nesting, or attribute issues. The validation feature catches syntax errors instantly.
Common Questions
Is my XML data stored?
No. All formatting happens in your browser using JavaScript. Your XML Schema never leaves your computer.
What XML formats are supported?
We support all valid XML according to the W3C XML specification. Elements, attributes, namespaces, CDATA sections – everything standard XML supports.
Can I format invalid XML?
We'll try to format it, but if there are syntax errors, the output might not be perfect. Fix syntax errors first for best results. Use our XML Validator to check first.
What indentation does it use?
We use consistent spacing for indentation, making nested structures easy to read. The exact style follows common XML formatting conventions.
How big can my file be?
Since processing happens in your browser, performance depends on your device. Small files format instantly. Very large files (several MB) might take a few seconds, but they'll still work.
Can I customize the formatting?
Currently, we use standard formatting conventions. If you need specific formatting options, consider using command-line tools like XMLStarlet for advanced customization.
Other XML Tools You Might Need
Formatting is just one XML task. Here are other tools that work well together: