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- 4 specificationsValidate against RFC 8259, RFC 7159, RFC 4627 or ECMA-404.
- Fix JSONRepairs common mistakes and lists every change it makes.
- 100% localYour data never leaves the browser. No uploads, no tracking.
- Exact numbersBig numbers are kept exactly as written, with no rounding.
What Fix JSON repairs
- Wrong quotes
{'a': 'b'}→{"a": "b"}- Unquoted keys
{a: 1}→{"a": 1}- Trailing commas
[1, 2,]→[1, 2]- Missing commas
[1 2 3]→[1, 2, 3]- Comments
{"a": 1 /* note */}→{"a": 1}- Python / JS literals
[True, None, NaN]→[true, null, null]- Malformed numbers
[.5, 0x1F, +1]→[0.5, 31, 1]- Unclosed brackets
{"a": [1, 2→{"a": [1, 2]}