RUST · WEBASSEMBLY · LOCAL-FIRST

Deduplicate CSV on your device

Your file stays on your device. Rust WebAssembly parses quoted CSV and multiline fields in a background worker, with no server-side file processing.

🔒 Your CSV is not uploadedVerify local processing →

Choose CSV or drop it hereFree · Up to 25 MB · Uses your CPU · No uploads

File encoding How should duplicates be detected? The first row is a header (keep it) Remove blank rows

Only the static page, worker and WASM code are fetched over the network. Your selected CSV data is not sent to Zoryvia. Processing runs locally inside a cancellable browser worker.

CSV files only; Excel workbooks are not supported. Existing spreadsheet formulas and URLs are preserved. Take care when opening untrusted CSV data. GB18030 is converted locally to UTF-8; downloads include a UTF-8 BOM.

Deduplicate CSV on your device

Your cleaned CSV is ready