Developer Tools for
JSON, XML, YAML, SQL and More
Free online tools for developers. Compare, format, validate and transform data instantly — no installation required.
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Popular Tools
JSON Compare
Compare two JSON objects side-by-side and highlight the differences. Supports tree view and raw diff.
JSON Formatter
Beautify or minify JSON instantly. Format messy JSON into readable, indented output.
JSON Validator
Validate JSON syntax instantly. Get clear error messages for invalid JSON.
XML Compare
Compare two XML documents side-by-side and highlight the differences.
YAML Compare
Compare two YAML files side-by-side and highlight the differences.
SQL Formatter
Beautify and format SQL queries instantly. Supports standard SQL dialects.
JWT Decoder
Decode and inspect JWT tokens instantly. View the header, payload, and signature.
Text Compare
Compare two blocks of text and highlight additions and removals.
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Always Free
No paywalls, no account required. Every tool is free forever.