Convert nested JSON objects and arrays into flattened CSV spreadsheets with custom delimiters.
Execution runs 100% locally inside the browser sandbox using HTML5 Canvas, Web Cryptography Subtle API, and Web Workers. Zero egress.
Zero network latency. Operates completely offline with zero dependencies on third-party backend servers or cloud services.
Built according to official RFC specifications, cryptographic test vectors, and enterprise-grade data transformation standards.
Paste your JSON array or object hierarchy into the input.
Enable or disable nested key flattening (e.g. user.profile.address).
Copy or download the CSV spreadsheet for Excel or Google Sheets.
Array items are joined with semicolons within the cell to keep the spreadsheet tabular.
Yes, switch the delimiter selector to semicolon (;) or Tab (TSV).
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