Syntax errors with line and column. Pretty-print with 4-space indent, or minify. JSON Schema Draft-07. Lint duplicate keys, trailing commas, comments and empty keys. JSON stays in your browser — nothing is uploaded.
Paste or type JSON and get syntax errors with a line and column. Open a finding to jump to that spot in the editor.
Pretty-print with 4-space indent, or minify to a single line. Formatting runs only when the document is syntactically valid JSON.
Paste a schema to check the document. Schema checks use JSON Schema Draft-07 by default. Remote references are not fetched.
JSON.parse keeps the last value for a duplicate key and does
not report trailing commas, comments, or empty keys. This linter reports
those problems.
Validation, formatting, and schema checks run on your device. Nothing is uploaded.
It validates, pretty-prints, minifies and lints JSON in your browser, with line/column errors and optional JSON Schema Draft-07.
No. Nothing is uploaded.
Draft-07 by default. Remote $ref URLs are not fetched.
JSON.parse keeps the last duplicate key and ignores trailing commas, comments and empty keys. This linter reports those problems.