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JSON Repair

Paste malformed JSON and review a conservative repaired result.

In-browser processingNo account requiredPrivacy details ↗

A QUICK WALKTHROUGH

How to use this tool

  1. Paste JSON.
  2. Repair and inspect the result.
  3. Copy valid JSON.

Conservative repair

Common quote, comma, and bracket mistakes are repaired locally; always review the output.

GOOD TO KNOW

Common questions

Is input uploaded?

No. The text stays in your browser.

A couple more handy tools

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JSON Formatter

Number and string tokens (including escapes and lone surrogates) stay verbatim. Duplicate keys stay present. Sorting compares decoded keys by UTF-16 order, keeping duplicate order stable. Positions use 1-based UTF-16 units. Validate mode keeps original whitespace and ignores sorting. UTF-8 byte counts and JSON/TXT exports replace literal lone surrogates with U+FFFD; escaped surrogate tokens remain unchanged. Processing stays in this browser. Nothing is uploaded.

Code, data & QR tools

JSON Minifier

Validate JSON and remove insignificant whitespace locally while preserving the original number tokens.