JSON Repair Demo - Test Shim's Repair Engine

Try Shim's JSON repair engine for free. Paste malformed JSON from any LLM (ChatGPT, Claude, Gemini) and see it repaired in real-time. No signup required. Supports truncated JSON, markdown fences, missing brackets, and schema validation.

Common test cases: Truncated arrays, markdown code blocks, missing closing braces, type mismatches.

LLMs Break JSON.
Shim Fixes It.

Paste malformed JSON from any LLM. See it repaired instantly. No crashes, no retries, no parsing errors.

20+ repair types
Sub-ms repair time
Try below (no signup)
Start free: 1,000 repairs/monthWatch Auto-Play Demo
Examples:
INPUT (Malformed)
INVALID

Paste broken JSON or try an example above

Ctrl+V / Cmd+V

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OUTPUT (Repaired)
WAITING
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