The Problem with Cloud-Based Privacy Tools
Many browser tools send page content to remote servers or cloud AI APIs for analysis. This introduces severe privacy risks, regulatory compliance challenges under GDPR/CCPA, and perceptible latency.
🔒 100% On-Device Execution
PrivacyBlur Plus contains zero remote network callers (no fetch, XMLHttpRequest, or WebSocket connections). All detection heuristics, regex evaluations, and visual masking execute entirely within the local Chrome sandbox.
Engineered for Minimal Chrome Permissions
Under Chrome Manifest V3, extensions should operate under the principle of least privilege. PrivacyBlur Plus requests only:
storage: To save your active detector toggles, visual styles, and custom keyword rules locally on your machine viachrome.storage.local.contextMenus: To provide convenient right-click options ("Protect this element", "Protect this website", "Temporarily pause").- Webpage access: To inject the local content script and apply CSS highlight ranges.
Broad and intrusive permissions such as scripting, tabs, and webRequest are completely omitted.
High Performance with CSS Custom Highlights
Instead of creating heavy, absolute-positioned <div> overlays that cause scroll lag, PrivacyBlur Plus uses browser-native ::highlight() ranges painted directly by the GPU. This ensures buttery smooth 60fps scrolling across heavy web apps, data tables, and dashboards.