Repairs malformed JSON from ChatGPT, Claude, Gemini, n8n and any LLM — trailing commas, markdown fences, Python True/False/None, single quotes, unclosed brackets, truncated streams. ‎ ‎100% client-side. Your JSON never leaves the browser. No signup needed. Shows a plain-English report of every change made. ‎ ‎JSON Studio: format, minify, validate, diff, convert CSV/YAML/XML/SQL, JSONPath, JSON Schema + TypeScript gen, JWT decode.