XML error reference · XV029
Document too large
The input exceeds the size this tool will process in the browser.
What causes it
Everything here runs in your browser tab, which means the document, the parse tree and the editor state all live in that tab's memory. Beyond roughly twenty megabytes the tree can consume several hundred megabytes and the tab becomes unresponsive, so the limit is enforced deliberately rather than discovered by crashing.
See it happen
<!-- a 200 MB catalogue export --><!-- split into per-day files, or stream with iterparse -->How to fix it
Split the document, or validate a representative sample. For genuinely large files a streaming parser on your own machine is the right tool. `xmllint`, Python's `iterparse` and SAX parsers all work, because none of them build the whole tree in memory.
Fix your own document
Paste your own document below. Press Sample if you want the broken example above loaded instead. Nothing you paste leaves this tab.
XML Validator
Well-formedness and schema validation. Nothing is uploaded.
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