NetScope

Inspect HTTP traffic and alert on local-network probes — side panel, toolbar badge, and desktop notifications.

NetScope is a technical browser research toolkit for inspecting network activity, security signals, and browser fingerprint surfaces. See what your browser is actually exposing instead of relying on assumptions or simplified privacy scores. Key Features Network & Requests Monitor browser HTTP requests in real time. Inspect URLs, methods, status codes, headers, and request context. Investigate cookies and network activity. Activity Follow network requests, security signals, and browser errors in a unified timeline. Correlate events during a browsing session. Security / ThreatCenter Investigate security signals and fingerprint-related observations. Analyze browser behavior with additional technical context. HTTP Headers Add or modify outgoing request headers. Research HTTP Client Hints and browser-server communication. Local Port Security Investigate local ports and browser-to-network interactions. Research the local network surface exposed to websites. Fingerprint Research WebGL vendor, renderer, and capability parameters. User-Agent Client Hints (UA-CH). HTTP Client Hints and Sec-CH-* headers. Plugins and MIME types. WebGPU GPUAdapterInfo. SpeechSynthesis voice enumeration. MediaDevices enumerateDevices(). Fingerprint Transparency NetScope distinguishes between four implementation states: Implemented Partially supported Native fallback Unsupported This helps you identify which browser surfaces are actually controlled and which remain native. Built for Technical Users Measure, don't assume. NetScope is a research and diagnostic tool. It is not an antivirus, EDR, SIEM, or complete anonymity solution, and it does not guarantee protection against browser fingerprinting or tracking.