What is XML Fixer?
Got broken XML? Missing closing tags, mismatched elements, or quote issues can break your entire document. This tool automatically fixes those problems. Just paste your malformed XML (Extensible Markup Language) and we'll repair it.
As defined by the W3C XML specification, XML has strict syntax rules. Our fixer follows these standards to ensure your output is valid. Perfect for fixing XML from API responses, configuration files, database exports, or when you've manually edited XML and introduced errors.
Everything runs in your browser – your data stays on your computer. Fix your XML in seconds and get back to work.
What Makes This Tool Different
Automatic Tag Repair
Detects missing closing tags, mismatched elements, and tag name errors. Automatically adds missing tags and fixes tag pairs to make your XML well-formed.
Smart Structure Fix
Repairs XML structure while preserving your data. Handles nested elements, attributes, and complex hierarchies without losing any information.
Multiple Error Types
Fixes missing quotes, unclosed tags, invalid attribute syntax, encoding issues, and namespace problems. Handles most common XML syntax errors.
Real-time Preview
See the fixed XML immediately in the output panel. Compare before and after to verify all repairs are correct.
Syntax Highlighting
Both editors feature XML syntax highlighting so you can easily identify elements, attributes, and changes.
Privacy First
All processing happens in your browser. Your XML never leaves your computer, ensuring complete data privacy and security.
How It Works
Paste Invalid XML
Drop your broken XML into the left editor. Not sure what broken XML looks like? Click "Sample XML" to see common errors.
Click Fix XML
Click the "Fix XML!!" button. Our advanced algorithm analyzes your XML and automatically repairs missing tags, syntax errors, and structural issues.
Review Fixed XML
Review the repaired XML in the right panel. The output is well-formed XML ready to use in your application.
When You'd Actually Use This
API Response Repair
Fix malformed XML from SOAP APIs or web services. Quickly repair data from external systems without manual tag matching.
Config File Fixes
Repair XML configuration files. Fix syntax errors in Spring configs, Maven POMs, or application settings files.
Data Migration
Fix XML during data migration or system integration. Repair syntax errors that occur when converting between formats.
Manual Edit Recovery
Recover from manual XML edits. Fix tag mismatches, missing closing tags, or quote issues introduced during editing.
Common Questions
Is my XML data stored or sent to a server?
No. Everything happens in your browser using advanced algorithms. Your XML never leaves your computer – we don't store or see your data.
What types of XML errors can it fix?
We fix common errors like missing closing tags, mismatched elements, invalid attributes, quote issues, and encoding problems. Very complex or ambiguous structural issues may require manual review.
Does it preserve my data?
Yes. We only repair the structure and syntax – all your actual data content, attributes, and values stay exactly the same.
What if the XML can't be fixed automatically?
For severely malformed XML with ambiguous structure, the tool will fix what it can. Complex issues may require manual review or provide suggestions.
Can it handle large XML files?
Yes. The tool can handle large files, though processing time depends on file size and your computer's performance.
Is the fixed XML always valid?
We aim to produce well-formed XML that follows W3C standards. Always verify the output with our XML Validator for critical applications.
Other XML Tools You Might Need
Fixing XML is just one part of working with XML data. Here are other tools that complement this fixer:
Want to learn more about XML? Check out the W3C XML page or read the comprehensive guide on MDN.