NICH
verifiedFreenichtech.uk
Free, browser-based tool that anonymizes sensitive text before you send prompts to AI, then restores the original data.
What it does
NICH: GPT Anonymizer is a free, privacy-focused tool that masks sensitive information (names, company details, emails, phone numbers, addresses) in one click before you send a prompt to an AI like ChatGPT or DeepSeek, then de-anonymizes the response to restore the original data. All processing happens in the browser.
Core features
One-click anonymization of sensitive text
One-click de-anonymization of AI responses
AI-powered entity recognition
Custom data masking
100% browser-based, no cloud storage
Best for
→Use AI on confidential documents safely
→Draft emails or contracts with AI privately
→Process sensitive customer or medical data
→Protect PII when prompting LLMs