Developer
JSON Formatter / Validator
Validate, format and compact JSON without uploading your input.
Open toolXML Formatter
Indent XML locally without enabling external entities or DTD declarations.
Maximum 200,000 characters. Input is not stored.
Ready. Use Ctrl/⌘ + Enter to run.
Completed and failed run counts are stored only on this device.
How to use this tool
Paste a well-formed XML document and run to indent it.
Supported input and limits
DTD and entity declarations are rejected. This is formatting, not XSD validation. Maximum main input: 200,000 characters.
Frequently asked questions
Does my input leave my browser?
No. A local worker processes it; text and files are not uploaded or stored.
Will this load external XML resources?
No. External declarations are rejected and input stays in your browser.
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