Lift the Veil on Your
Network Connection
Honest, in-depth network diagnostics for gamers and power users. One-click smart diagnosis, ISP throttle & interference detection, bufferbloat, Wi-Fi analysis and more — all measured locally on your PC.
Everything You Need to
Understand Your Connection
A complete toolkit of honest, standards-based diagnostics — from one-click smart analysis to deep ISP and Wi-Fi inspection.
Smart Diagnosis
One click runs every test and grades your connection with plain-language insights. A dedicated FPS mode tunes thresholds for competitive gaming.
ISP Throttle & Interference Detection
Detect whether your ISP throttles BitTorrent, QUIC, VPN or OpenVPN traffic, plus DNS hijacking, captive portals and TLS interception.
Speed, Bufferbloat & Latency
Measure real throughput, ping to popular services and game servers, jitter, packet loss and bufferbloat under load.
Wi-Fi & Local Network
Analyze Wi-Fi channels and signal health, scan LAN devices, and run PC-to-PC LAN speed tests — all on your local network.
VoIP, DNS & IPv6
Estimate call quality with a real UDP VoIP MOS test, benchmark DNS resolvers, check DNS/IP leaks and verify IPv6 connectivity.
Private by Design
Diagnostics run locally on your machine. No account, no tracking, no telemetry of your results — and the code is open source.
See NetVeil In Action
A clean, focused interface that turns raw network data into clear grades and actionable insights.
Live Graphs
Real-time visualization of latency, speed and bufferbloat
Letter Grades
Every test scored A+ to F with plain-language verdicts
PDF Reports
Export full diagnostics for ISP support tickets
Ready to Level Up?
Download the portable app and run a full network diagnosis in minutes. Free, open source and no signup required.
Download for WindowsWindows 10/11 • ~9 MB portable • No admin required