Well-formed input comes first
The formatter checks matching tags, quoted attributes, legal names, character references, and the single-document-element rule before writing output. Invalid source remains available for correction.
- Input
- XML
- Limit
- 1 MiB
- Runtime
- Browser
Format XML while respecting mixed content
Parse one XML 1.0 document and produce readable indentation without treating text-bearing mixed content as disposable layout.
Local processingNo sign-upNo network access
Format XML
Inputs are limited to 1 MiB and stay in this browser tab.
Formatted XML
Nothing is placed in a URL, account, or remote log.
What this tool does
XML 1.0, bounded, and local
XML whitespace can be either presentation or data. Formatting therefore follows the parsed node structure and avoids inventing line breaks where element and text nodes are deliberately interleaved.
Formatting is not canonicalization
Readable indentation does not create Canonical XML and should not be used for signature verification. Attribute order, namespace context, and application-specific whitespace still deserve review.
Primary references
Questions and answers
Related XML tools
XML ValidatorParse XML 1.0 syntax and report whether its document structure is well formed without claiming schema or business-rule validity.XML MinifierRemove safe presentation whitespace and compact markup while retaining text whose position can affect the represented document.XML ComparatorParse two XML documents and report bounded path-level structural changes rather than treating every formatting difference as a content change.