Data tool
JSON/CSV Transformer
Convert, validate, flatten, and unflatten JSON/CSV data instantly in your browser.
Use the first CSV row as headers. Each next row becomes a JSON object.
Everything runs client-side. Your data never leaves your browser.
Bidirectional Conversion
Switch between CSV and JSON with one click, using comma, semicolon, or tab delimiters.
Shape Control
Flatten nested JSON paths or rebuild deep objects from flat keys for easier integrations.
Private Processing
No uploads, no servers. Your transformations stay local in browser memory.