About this tool
Pretty-print, minify or check XML, YAML, TOML and SQL — with the exact line and column of the first error.
XML is checked for well-formedness by 1CLIK’s own parser (DTDs and entities refused), YAML and TOML by spec-compliant parsers, and SQL is laid out by a dialect-aware formatter.
Example: a one-line XML document is indented with one element per line.
Validation means the syntax is correct; XML is not checked against a schema, and SQL is not run against a database.
Quick steps
- Paste your text or open a file (or press Try an example).
- Choose the options — the result updates as you type.
- Copy the result or download it as a file.
Everything runs in your browser. Nothing you type is sent to 1CLIK.
FAQ
How does the XML / YAML / TOML / SQL Formatter & Validator work?
XML is checked for well-formedness by 1CLIK’s own parser (DTDs and entities refused), YAML and TOML by spec-compliant parsers, and SQL is laid out by a dialect-aware formatter.
What should I keep in mind?
Validation means the syntax is correct; XML is not checked against a schema, and SQL is not run against a database.
Is my text uploaded or saved?
No. It is processed on your device in a separate background task that is stopped if it takes too long; nothing is stored or sent.