A free tool for Google Ads Marketers to anonymize customer lists and conversion data instantly.
The Problem.
Google Ads marketers constantly handle CSVs full of sensitive customer data (Customer Match lists, Offline Conversions). Emailing these files to colleagues or uploading them without proper hashing/cleaning is a massive GDPR risk.
The
Solution.
JohnDoeData is a ‘Safety Net’ for PPC specialists.
Instant Anonymization
Drag and drop your CSV. The tool hashes or removes PII (names, emails, phones) while keeping the data structure useful for analysis.
Client-Side Security
The file never leaves your computer. All processing happens in your browser.
The Engineering Challenge.
To guarantee privacy, we had to build a powerful CSV processing engine that runs entirely in the browser (Client-Side). This ensures that even we cannot see the data you are cleaning.
Client-Side Processing
Web Workers
SHA-256 Hashing