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{ }JSON Formatter

Free Online JSON Tools

Every tool on this site — all free, no sign-up, and 100% in-browser: your data never touches a server.

JSON FormatterBeautify, validate and minify JSON with exact error locations — the full workbench.JSON ValidatorCheck JSON against RFC 8259 and get the exact line and column of every error.JSON BeautifierPretty-print JSON with 2, 3, 4-space or tab indentation for readable output.JSON MinifierCompress JSON to a single line and see exactly how many bytes you saved.JSON ViewerExplore JSON in a collapsible tree, search keys and values, copy JSONPath.JSON SorterSort object keys alphabetically (A–Z or Z–A), recursively, for stable diffs.JSON EscapeEscape text so it is safe to embed inside a JSON string value.JSON UnescapeDecode escaped JSON strings back to plain readable text.

Which tool do I need?

  • “My JSON is one unreadable line” → Beautifier (or the Formatter, which also validates and repairs).
  • “Is this JSON even valid? Where is the error?” → Validator — exact line and column, human messages.
  • “I need it as small as possible” → Minifier, with a byte-savings report.
  • “I need to find one field in a huge payload” → Viewer — searchable tree with JSONPath copying.
  • “Two exports won't diff cleanly” → Sorter for canonical key order.
  • “I have to embed text inside a JSON string” → Escape; got escaped text back? Unescape.

All tools share one philosophy: fast, precise, private. The parsing engine reports errors with exact positions on every browser, dark mode is everywhere, and nothing you paste is ever uploaded.