XML Validator
Check and avoid breaking the Back-end Parser in production.
The Fragility of XML
Unlike HTML, which browsers usually \"forgive\" typing errors and render the page anyway, XML is draconian. If, by mistake, a simple less-than character (<) is forgotten in the middle of the text, it will literally blow up the API communication or corrupt the NFe (Electronic Invoice) database. Always validate your tags!
Disaster Prevention Test
If you don't want to take risks issuing documents, just bring your dirty block here. We use the browser's native smart tree (DOMParser) to investigate the inside of the markup. If the tree sprouts perfectly, the document is Valid! Otherwise, we point out which node of the branch was corrupted.