CSV Converter • Offline

Anonymize CSV columns to safely upload to AI (ChatGPT, Claude...) without exposing sensitive data. 100% offline.

CSV Anonymizer • Offline - Anonymize Sensitive Data for AI Safely share CSV files with AI tools (ChatGPT, Claude, Gemini) without exposing sensitive information. 100% offline anonymization and restoration. CSV Converter anonymizes your data instantly with reversible pseudonyms. Replace real names with fake ones, process your CSV with any AI tool (ChatGPT, Claude, Gemini) without exposing sensitive information. All processing happens 100% offline in your browser—no data ever leaves your computer. GDPR compliance. PII protection, HIPAA compliant KEY FEATURES 🔒 Complete Privacy • Zero network access: Works entirely offline, no internet connection required • No data upload: Files never leave your device • GDPR compliant: Perfect for regulated industries (healthcare, finance, legal) • Hardware-bound licensing: Secure activation tied to your PC 🎯 Dual-Mode Operation Anonymize Mode: • Upload CSV with sensitive data • Select columns to anonymize (names, emails, IDs, addresses) • Choose strategy: Hash-based (deterministic) or Human-readable aliases • Download anonymized CSV + dictionary file Restore Mode: • Upload anonymized CSV + dictionary • Instantly restore original values • Perfect match guaranteed PERFECT FOR • Data analysts working with AI tools • Healthcare professionals sharing patient data • Financial advisors processing client information • Consultants collaborating with ChatGPT/Claude • Privacy officers ensuring GDPR compliance • Anyone handling sensitive CSV data HOW IT WORKS 1. Select columns containing sensitive data (names, emails, phone numbers) 2. Choose anonymization strategy (hash-based or human-readable) 3. Download two files: Anonymized CSV + Dictionary CSV 4. Share anonymized CSV safely with AI tools (ChatGPT, Claude, etc.) 5. Restore original data anytime using the dictionary file WHY OFFLINE MATTERS Unlike cloud-based anonymization services, CSV Converter: ✅ Never uploads your data to external servers ✅ Works without internet connection (perfect for sensitive environments) ✅ No subscription to cloud services required ✅ Complete control over your data at all times SECURITY & TRUST • Open architecture: Chrome Manifest V3 compliant • Minimal permissions: Only requires file downloads and local storage • No tracking: Zero analytics, no telemetry • Hardware-bound activation: License tied to your PC, prevents unauthorized sharing