Anonymise CSV files in your browser. Select columns to redact, hash, truncate, or replace with synthetic data. Preview changes before downloading the anonymised file.
Open CSV Anonymizer → free, no sign-inBefore sharing a CSV with a client, an analyst, or a third party, the personal data inside it needs to go. The CSV Anonymizer lets you choose exactly which columns to redact, hash, truncate, or replace with synthetic equivalents — column by column, with a preview before you commit. The result is a privacy-compliant version of your data, ready to share without legal risk.
Data analysts preparing datasets for external stakeholders, developers testing with production-like data, anyone complying with GDPR or similar regulations who needs to strip identifying information from CSV exports before they leave the organisation.
No tutorials. No learning curve. Open it and get started.
No server uploads. Multiple anonymisation strategies are available per column — redact, hash, truncate, or replace with synthetic data — so you can choose the right approach for each field.
Completely free. No trial period. No premium tier for basic functionality. No account required. Use it as often as you need.
One job, done well. CSV Anonymizer was built to solve a specific problem cleanly. No feature bloat, no ads, no distractions.
What anonymisation strategies are available?
Redact (replace with blank or placeholder), hash (one-way cryptographic hash), truncate (keep first N characters), and synthetic replacement.
Is hashing reversible?
No — hashing is one-way. Hashed values cannot be converted back to the original.
Does this guarantee GDPR compliance?
Anonymisation is one part of GDPR compliance — consult your legal team for full compliance requirements.
Is my data uploaded?
No — all processing runs locally in your browser.
Can I anonymise only some columns?
Yes — you choose which columns to anonymise and which to leave unchanged.
Free. Instant. No sign-in. Open it and get the job done.
Open CSV Anonymizer on Doathingy.com →