JSON Formatter
Format, minify, and validate JSON text in your browser.
CSV to JSON converter
Convert CSV or TSV to JSON and back, with quoted fields, embedded newlines, Unicode and a table preview.
Updates as you type or change an option
Table preview
CSV cells stay as strings. Preview shows the first 30 rows and 12 columns.
About this tool
Convert CSV or TSV to JSON and back, with quoted fields, embedded newlines, Unicode and a table preview.
How to use
Choose a direction, delimiter and header option, then paste data or open a file. CSV values stay as strings, so an identifier such as 0001 keeps its leading zeros. Header names must be unique and nonempty.
JSON accepts arrays of flat objects or equal-length arrays, not nested objects. Quote large integers. CSV output prefixes formula-like strings with an apostrophe by default; disable this when appropriate. Limits: 10,000 rows, 500 columns and 2 MiB input. Preview shows 30 rows and 12 columns.
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