OmniShield

OmniShield provides critical data privacy for interactions with large language models, preventing sensitive information from leaving your browser. Key features include: • On-device masking of secrets before sending • Supports ChatGPT, Claude, Gemini, and Cursor • Replaces API keys, PII, and financial tokens with placeholders • Wire-level protection; raw secrets never reach external servers • No account required for core functionality This tool is designed for anyone who frequently pastes code, logs, configurations, or personal messages into web-based language models and wants to avoid accidental data exposure. It intercepts and transforms prompts locally, ensuring that credentials, personal identifiers, and other confidential data are replaced with safe, intelligible placeholders without compromising the query's intent. OmniShield helps maintain confidentiality by ensuring that sensitive details like API keys, environment dumps, JWTs, and email addresses are removed or masked before they are transmitted to any external model. The free core masking covers common patterns, while a Pro version adds advanced capabilities like optical character recognition (OCR) and healthcare-specific pattern detection. It’s an essential utility for developers, founders, and security teams who rely on these powerful tools daily but need robust data protection.