XML Fixer
Fix broken XML online — repair missing tags, mismatched elements, and syntax errors automatically.
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.
How to Use the XML Fixer
Follow these steps to fix broken XML. Each step uses the actual buttons and panels on this page.
Paste Broken XML or Load Sample
Paste malformed XML into the left editor. Click Sample XML to load example telecomm XML with common errors (missing tags, mismatched elements). Example of broken XML:
<subscribers><subscriber><subscriberId>SUB-1001</subscriberId><plan>Unlimited 5G</plan><dataUsage>45.2</dataUsage></subscriber>The missing closing </subscribers> tag is a typical error the fixer repairs.
Click Fix XML!!
Click the green Fix XML!! button. The tool analyzes your XML and repairs missing closing tags, mismatched elements, invalid attributes, and quote issues per the W3C XML specification.
Review Fixed Output
The right panel shows the repaired XML. Verify the structure, then copy or use it in your app. Validate with our XML Validator for critical use. All processing runs in your browser – your XML never leaves your computer.
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 JavaScript and 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 XML errors like missing closing tags, mismatched elements, invalid attributes, quote issues, and encoding problems per W3C XML standards. Very complex structural issues may require manual review.
Does it preserve my data?
Yes. We only repair the XML structure and syntax per W3C standards – 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 XML standards. Always verify the output with our XML Validator for critical applications per XML specifications.
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: