Data Anonymizer
Anonymize sensitive PII in CSV or JSON data. Auto-detects names, emails, phones, SSNs, credit cards, and IPs. Deterministic mode available.
Data Anonymizer
Anonymize sensitive data in CSV or JSON. Auto-detects PII columns (names, emails, phones, SSNs, credit cards, IPs) and replaces them with realistic fake data.
Load Data
Drag & drop a CSV or JSON file, or click to browse
Frequently Asked Questions
What PII is detected?
Names, emails, phone numbers, addresses, SSNs/IDs, credit cards, IP addresses, dates of birth — auto-detected by column header name, or manually assigned.
Is data uploaded?
No. All anonymization runs in your browser. No data leaves your machine.
What is deterministic mode?
Same input always produces same anonymized output via a seeded PRNG. Preserves referential consistency across your dataset.
Is the Data Anonymizer free to use?
Yes, the Data Anonymizer is 100% free with no registration, no hidden fees, and no usage limits. All processing happens locally in your browser, ensuring complete privacy.
Does the Data Anonymizer work on mobile devices?
Yes, the Data Anonymizer is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the Data Anonymizer in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the Data Anonymizer?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The Data Anonymizer works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Data Anonymizer
Data Anonymizer is a free, browser-based tool in our Utility Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.