XML Formatter

What XML Formatter does

XML Formatter validates XML, inserts readable indentation, and can convert the parsed structure into JSON for easier inspection. It is useful for SOAP payloads, RSS feeds, sitemap fragments, SVG snippets, Android resources, build files, legacy integrations, and vendor APIs that still exchange XML. Formatting makes nested elements, attributes, and closing tags easier to scan when debugging a response or preparing a small sample for documentation. The XML to JSON mode turns elements and attributes into a JavaScript object and prints formatted JSON, which is helpful when comparing a payload with JSON-based tooling or quickly understanding document shape.

Validation runs before either action so malformed angle brackets, mismatched closing tags, and invalid structure are reported early. The formatter is intentionally focused on human readability rather than canonical XML processing. It works best for data-oriented documents where whitespace between elements is not meaningful and where a quick browser-side view is enough.

Private browser-based workflow

All processing happens inside your browser with client-side JavaScript. The tool does not upload snippets, configuration values, generated data, query text, or copied examples to a server, and it does not require an account. That local-only model matters for developer utilities because the content pasted into them often looks like real application data: API responses, logs, environment-shaped samples, database queries, markup from drafts, or values copied from production debugging sessions. Keeping the transformation local reduces risk and keeps the interaction fast because there is no network round trip.

The interface is intentionally compact so you can paste input, adjust options, inspect output, copy it, and move back to your editor. Results should still be reviewed before being committed, shared publicly, or used in a production workflow. Browser tools are excellent for quick inspection and preparation, but they cannot understand every project convention, data classification rule, or application-specific validation requirement.

Practical tips

Be cautious with mixed content such as XHTML paragraphs, inline SVG text, signatures, and documents where exact whitespace matters. Formatting should not be used as a canonicalizer for signed XML, because whitespace changes may invalidate a signature or alter downstream processing. Use JSON conversion for inspection rather than as a replacement for a project-specific XML parser. Attribute handling, repeated elements, namespaces, comments, processing instructions, and text nodes can vary between applications, so validate final output with the consuming system.