Free Tool
Data Anonymizer
Choose which columns to transform before sharing a dataset. Remove columns entirely, replace values with a fixed label, redact to [REDACTED], keep only the last 4 characters, or generate consistent pseudonymous IDs within your session. Preview before and after, then download the result.
Files never uploaded
You choose every transformation
Before/after preview
Your data never leaves your browser. All transformations are applied locally. No files are uploaded, stored, or transmitted.
Drop your CSV here, or click to browse
Accepts .csv, .tsv, and .txt files. Processing stays on your device.
CSVTSVTXT
Applying transformations…