anonym.legal for Chrome
Anonymize PII before sending to ChatGPT, Claude & Gemini
What it does
Intercepts your messages to ChatGPT, Claude & Perplexity — detects PII (285+ types, 48 languages), anonymizes before sending, de-anonymizes AI responses so you read real names back. Replaces names, accounts, emails, IPs with [PERSON_1], [ACCOUNT_1] etc. AI never sees real data. Employee gets a useful answer. No shadow AI. Zero-knowledge encryption. GDPR & HIPAA ready. Manifest V3. Works on ChatGPT, Perplexity, Claude.ai, Gemini, DeepSeek, Copilot.
Does the same job
all alternatives →- LPLocal Privacy Firewall-blocks PII and secrets before ChatGPT sees themDec 2025 · github.com · ▲111
OP here. I built this because I recently caught myself almost pasting a block of logs containing AWS keys into Claude. The Problem: I need the reasoning capabilities of cloud models (GPT/Claude/Gemini), but I can't trust myself not to accidentally leak PII or secrets. The Solution: A Chrome extension that acts as a local middleware. It intercepts the prompt and runs a local BERT model (via a Python FastAPI backend) to scrub names, emails, and keys before the request leaves the browser. A few notes up front (to set expectations clearly): Everything runs 100% locally. Regex detection…
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