Essentials/

JSON Repair

No network payload

Input⌘144 B · JSON

ResultReady

Run the current tool with ⌘↵. The payload stays inside the local worker.

Essentials · PROCESSED LOCALLY

What JSON Repair does

Repair common malformed JSON from logs, humans, and LLMs—with each applied correction category listed before you use the result.

Also searched as repair, repair json, fix, fix json, fixer, broken json, malformed, invalid json.

Strip safe wrappers such as Markdown fences

Parse tolerant JSON constructs

Return strict JSON plus operations and confidence

High-confidence syntax fixes are automatic. Ambiguous intent remains an error so a repair cannot quietly invent data.

QUESTIONS, ANSWERED

Does jsontools.me upload my JSON?

No. The document is parsed and processed by json-buf inside a dedicated WebAssembly worker on your device.

Does it work offline?

Yes. After the application shell and engine have loaded once, the installable PWA keeps the tools available without a network connection.