Tarcza Sentinel

Tarcza Sentinel helps you assess whether a photo you are viewing may have been generated by artificial intelligence. Its result is a probabilistic signal, not proof that an image is authentic or AI-generated. Main features: * Local protection for visible photos in social-media feeds. * Separate consent for every site; all social sites are disabled by default. * On-device analysis using WebGPU, with WebAssembly fallback. * A red border and confidence label for photos with an AI score of at least 90%. * Filtering of small icons, avatars, and other interface elements. * A separate Full Sentinel cloud scan for users who deliberately request extended analysis. Benchmarks of included model: * AUROC: 99.45% * Accuracy: 97.40% * Precision: 97.87% * Recall: 95.46% * F1: 96.65% * Equal error rate: 2.73% * Recall at 1% FPR: 94.24% * Expected calibration error: 1.19% Automatic local protection does not transmit analyzed photos to Sentinel or third parties. The extension accesses a selected site only after the user enables it and accepts Chrome's permission prompt. Privacy policy: https://tarczasentinel.pl/polityka-prywatnosci