Bullshield - User-Agent & Fingerprint Spoofer is a free Chrome extension designed to enhance user privacy by reducing fingerprinting and limiting data collection by websites and scripts. It offers a coherent approach to user-agent and browser fingerprint spoofing, ensuring that multiple browser identity surfaces are aligned. This prevents websites from receiving conflicting signals, which is common with simpler spoofing methods.

The extension boasts a range of core capabilities including user-agent spoofing, Client Hints spoofing, and coherent fingerprint profile generation. It also provides features for browser identity alignment, locale and timezone alignment, and WebGL-related fingerprint masking. Users can manage per-site controls, manually generate profiles, and even refresh profiles on a timed basis. With its local operation within the browser extension runtime, Bullshield offers a robust solution for maintaining online privacy.