Load a CSV, pick a masking strategy for each column, and export a shareable, anonymized copy — without a spreadsheet or a server.
🔒Nothing is uploaded. Your file is parsed, masked, and exported entirely inside this browser tab — it never touches a server. Close the tab and it's gone.
⇪
Drop a .csv file here — or choose a file
Everything runs in your browser. Your data never leaves this page.
Or paste data as text
Reproducibility
Columns & masking strategy
Column
Sample values
Strategy
Options
Risk
Strategies were auto-suggested from column names and sample values — override any of them. ⚠ marks columns that look sensitive but are currently left unmasked.
Rough re-identification check (k-anonymity-ish)
An auditable record of exactly which strategy (and settings) was applied to each column.