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Json Validator

✓ Valid JSON

Bytes

162

Minified

124

Nodes

11

Max depth

2

Uses your browser’s native JSON parser, so errors match what Node.js / Python / any standard parser would report. Common issues: trailing commas (not allowed in JSON), single quotes (must be double), comments (not allowed in standard JSON — use JSON5 if you need them).

Validate JSON with line/column error reporting. Uses your browser’s native parser, so error messages match what Node.js / Python / any standard library would produce. When valid, also reports byte size, minified size, total nodes, and max nesting depth.

Nasıl Kullanılır

  1. Paste your JSON.
  2. Watch validity update live.
  3. If invalid, the error message + line/column points to the exact problem.

Sık Sorulan Sorular

Can I use comments in JSON?

Standard JSON (RFC 8259) doesn't allow comments. JSON5 and JSONC do. If you need comments, your stack needs to be using one of those parsers — strict JSON.parse will reject any // or /* */.

What about trailing commas?

Strict JSON disallows them. JSON5 / JSONC allow them. Most production parsers (especially in browsers and APIs) reject trailing commas.