JSON Swiss Army Knife
Validate, format, minify, diff, query, and share JSON — all in one fast, open-source tool. No signup required.
Open the Tool →Everything You Need for JSON
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Validate
Instantly check if your JSON is valid with clear error messages pointing to the exact line and column.
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Format
Pretty-print JSON with configurable indentation and optional key sorting for clean, readable output.
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Minify
Compress JSON by stripping all whitespace. See exactly how many bytes you save.
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Diff
Compare two JSON documents side-by-side. See added, removed, and changed values at every level.
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Query
Extract values with dot notation paths like $.users[0].name.
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Share
Save JSON snippets and share them via short URLs. Great for debugging and collaboration.