Validate XML, format it, or remove formatting whitespace.
Your input stays in this browser.
Starting points for your own code. Run them in the environment shown below.
Browser · DevTools console
Current inputs apply only to fields used by the example. Selected files are not embedded.
Install dependencies
const input = '<root><user name="Alice">Hello</user></root>';
const document = new DOMParser().parseFromString(input, "application/xml");
if (document.querySelector("parsererror")) throw new Error("Invalid XML");
console.log(new XMLSerializer().serializeToString(document));
// Do not remove text-node whitespace blindly: mixed content can change.Validate XML, format it, or remove formatting whitespace.
Preserves mixed content and xml:space="preserve". DTDs and external entities are unsupported.
Text 1 MB
Split inputs that exceed the limit. If a format or algorithm is unsupported, choose a tool that matches your requirements instead of silently changing the format.