🔒 CSV/Text Data Anonymizer
Mask specific CSV columns before sharing a file — full redaction, partial masking, or consistent pseudonyms.
Runs entirely in your browser — nothing is uploaded. This is a simple column-masking tool: you tell it exactly which columns to touch and how. It does not intelligently detect PII, scan free text for names/emails/SSNs, or understand what any column means — it only does what you configure, column by column. If a sensitive value sits in a column you didn't select, or inside a free-text column, it will not be masked.