Show HN: PrivacyShield – Mask your PII before it reaches ChatGPT/Claude (www.piiblock.com)

PrivacyShield has launched a browser-based tool designed to protect users' personal identifiable information (PII) before it is sent to AI chatbots like ChatGPT and Claude. This innovative solution detects and masks sensitive data—such as medical and financial information—ensuring that real data never leaves the user's device. With a simple installation and zero cost for core protection, PrivacyShield aims to democratize privacy for all individuals, not just those with corporate budgets. This tool addresses a significant gap in the AI/ML landscape, where many users unknowingly share sensitive information that may be logged and used for training AI models. PrivacyShield's local processing technology means that all data is encrypted and never collected on servers, minimizing risks associated with data breaches. The tool can automatically recognize over 15 types of personal data and provides users the opportunity to review what is masked before submission, making it a crucial asset for freelancers, students, healthcare professionals, and anyone using AI with sensitive information.