JSON Repair
Paste broken JSON — trailing commas, single quotes, comments, or output your AI tool cut off mid-stream — and get valid JSON back.
Runs 100% in your browser. Repair runs on this device using the jsonrepair library, bundled into this site — it is not sent to any repair service.
Your input never leaves this page — there is no Hermet server to send it to, and nothing you paste is saved anywhere. Reload with your browser’s Network tab open and watch: no request carries your data, because no request is made at all.