đ Network Diagnostic - Advanced Internets Tests
Test your internet connection strength for gaming, deep diagnostics, ping latency, speeds, and full transport-layer analysis. 100% Client-Side.
âšī¸ Note: Browser security sandboxes prevent direct hardware access. Metrics designated as Estimated are calculated via client-side heuristics.
Network Info
Public IP Measured
--
Checking...
Connection Type Measured
--
Via Navigator API
Overall Status Inferred
--
Network reachability
Connection Details
Basic Latency (Ping) Measured
-- ms
Time to nearest CDN edge
Download Speed Estimated
-- Mbps
Heuristic via Downlink
Upload Speed Estimated
-- Mbps
Calculated via baseline ratio
Device Information
Browser Measured
--
User Agent parsed
Operating System Measured
--
Platform detected
Screen Resolution Measured
--
Local display dimensions
Ping & Latency Quality
Real-Time Ping Measured
-- ms
Time to nearest CDN edge
Real-Time Jitter Measured
-- ms
Lower is better for gaming
Packet Loss Estimated
-- %
Via WebRTC DataChannels
Congestion & Throughput
Bufferbloat Grade Inferred
--
Latency spike under load
Real-Time Download Estimated
-- Mbps
Heuristic via Downlink API
Real-Time Upload Estimated
-- Mbps
Calculated baseline ratio
Peer-to-Peer Quality
NAT Traversal Measured
--
Direct vs STUN/Relay
Resource Timings
DNS Lookup Measured
-- ms
domainLookupEnd - start
TCP Handshake Measured
-- ms
connectEnd - connectStart
TLS/SSL Negotiation Measured
-- ms
connectEnd - secureConnectionStart
Time to First Byte (TTFB) Measured
-- ms
responseStart - requestStart
Transport & WebRTC Diagnostics
ICE Topology Measured
--
Candidate traversal route
DTLS/SRTP Cipher Inferred
--
Default cipher suite
Active Transport Measured
TCP / UDP
Detected protocol
Network Stack & Protocol Info
ALPN Protocol Measured
--
Next-Hop Protocol
HTTP/3 QUIC State Inferred
--
Connection Migration State
Effective Bandwidth Measured
-- Mbps
navigator.connection.downlink
Estimated Parameters
Local mDNS IP Estimated
--
Masked / Sandboxed host subnet
Path MTU Threshold Estimated
-- Bytes
Max transmission unit size rules
TCP Retransmission Estimated
-- %
Segment Loss Rate Inference
Network Health Explained
This tool calculates dozens of network data points strictly from your browser memory to give you the most accurate real-time representation of your network connectivity without pinging heavy Java/Flash plugins.
- Packet Loss & Jitter: Essential for gamers. Jitter measures the variance in your ping. High jitter means lag spikes. Packet loss means actual data dropping mid-air.
- Bufferbloat: Tests how badly your router handles simultaneous heavy downloads/uploads. If your ping jumps from 20ms to 200ms when someone watches Netflix, you have an "F" bufferbloat grade.
- Resource Timings: Web developer metrics showing how long it takes your computer's OS to resolve domains (DNS) and establish secure cryptographic handshakes (TLS).