XML Fixer Online – Repair and Fix Broken XML Instantly

An XML Fixer is a tool that automatically detects and repairs common XML errors so your document becomes valid and parseable. It handles issues like unquoted attribute values, single-quoted attributes (XML requires double quotes), unclosed tags, and extra whitespace inside tags. Our XML Fixer runs entirely in your browser — no data is sent to any server.

The XML Fixer repairs the most common structural issues: unquoted attribute values (id=1 → id="1"), single-quoted attributes converted to double quotes, and extra whitespace inside opening tags. For more severe errors like completely missing closing tags or deeply nested structural corruption, the fixer will report the remaining error with a line number so you can fix it manually.

Some XML errors are too structural to repair automatically — for example, a missing closing tag deep inside a complex document. In that case, the tool will show the error message with a line number so you can locate and fix it manually. For formatting only (no repair needed), use our XML Formatter tool instead.

Yes. All processing happens in your browser using JavaScript. Your XML is never uploaded to any server, stored, or logged. You can safely paste sensitive configuration files, API responses, or internal data without privacy concerns.

XML Formatter only indents and prettifies already-valid XML. XML Fixer first attempts to repair broken XML (fixing attribute quoting, whitespace issues, etc.) and then formats the result. If your XML is already valid, use the Formatter for a faster result. If you are unsure whether your XML is valid, use the Fixer — it will repair what it can and report what it cannot.

Yes. Once the XML is repaired and displayed in the right panel, click the "Download" button to save it as a timestamped .xml file. You can also click "Copy" to copy the fixed XML directly to your clipboard.