JSON Formatter
Format, minify and validate JSON without changing large integers, number notation, key order or string escapes. Import files and locate syntax errors.
XML formatter and validator
Validate and format XML locally with two- or four-space indentation, preserving mixed text and xml:space whitespace.
Updates as you type or change an option
About this tool
Make element-based XML easier to read without adding whitespace inside meaningful mixed text. External entities and XSD validation are outside this tool’s scope.
How to use
Paste XML or open a UTF-8 file. Valid XML is formatted automatically; unmatched tags and other syntax problems are reported. Choose indentation, then copy or download the result.
Mixed-content elements and xml:space="preserve" subtrees retain their content. Only suitable element structures are indented. DOCTYPE and external entities are unsupported; this is not XSD validation. Input limit: 1 MiB and 80 nested levels.
Common questions
Why are some XML elements left on one line?
Adding indentation can change mixed text, CDATA or xml:space="preserve" content. Those subtrees retain their content. Valid syntax does not establish compliance with an XSD or business contract.
Why can a saved XML file fail to open here?
Imports must contain valid UTF-8, even if the XML declaration names another encoding. Convert the file encoding first. Processing is local, and downloaded XML declares UTF-8 when a declaration is present.
Can I format XML containing a DOCTYPE?
No. DOCTYPE is rejected and external entities are not loaded. Use an entity-resolved export from your source system; input must also fit within 1 MiB and 80 nested levels.
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