CLOKR — AI Privacy Shield

What it does

CLOKR is a Chrome extension that protects your privacy when you use AI chat tools. It runs in your browser and detects common sensitive data patterns (emails, IBANs, tax codes, phone numbers) in what you type. Before the message is sent, CLOKR replaces them with placeholders, so the AI only sees anonymous tokens. All processing is local, no CLOKR servers, and the code is fully open source.

CLOKR is a free, open-source Chrome extension that automatically masks emails, credit cards, IBANs, tax codes and other PII before they reach ChatGPT, Claude or Gemini. 100% local processing, zero servers, zero tracking.

CLOKR automatically detects and masks emails, credit cards, IBANs, tax codes and other sensitive data before they reach ChatGPT, Claude or Gemini. 100% local processing. Zero servers. Zero tracking. Every architectural decision in CLOKR is engineered to ensure your sensitive data never leaves your browser. All PII detection and masking runs inside your browser. Zero network calls, zero servers, zero telemetry. Your data physically cannot leave your device. CLOKR intercepts the Enter key and Send button before the AI platform processes your input. PII is masked before the HTTP request fires. Not just regex: Luhn algorithm for credit cards, MOD-97 for IBANs, official checksum for Italian tax…from clokr.dev

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