JSON & Schemas

JSON Repair Preview

Review conservative syntactic JSON repairs with original text and a visible diff.

Processed on our CPU server.Submitted input is processed for this run and is not stored.

256 KiB limit

Input

Paste your input or load an example,
then run the tool.

Supported formats & limitations

Pinned conservative-syntax-v1: quote bare identifier keys/single-quoted strings, remove comments/trailing commas, close truncated containers only after complete values. No guessed missing values/commas; ambiguous inputs rejected.
Valid JSON stays byte-identical; number lexemes preserve precision. 16 KiB, 64 nested containers, original retained, explicit proposal review before copy/download.

Execution budget: 10s; output limit: 4096 KiB. Browser worker startup has a separate 3s allowance.