UD5 Toolkit
Series & Parallel Resistor Network Solver
Build a combination resistor network by adding series/parallel groups and get total resistance. Visual circuit.
Tag: Network Diagnostic Tools
7+ toolsOnline Ping Test - Measure Latency to Servers
Send HEAD requests to popular websites and measure the round‑trip time. Quick network health check. Client‑side.
Traceroute Simulator - Online Visual Hop Path
Simulate a traceroute by entering a destination IP. Learn about AS paths and latency. Does not send real packets; educational visualisation.
Network Throttle Simulator - Online Slow 3G & Offline Test
Test how your page loads under slow, 3G, or offline conditions by intercepting fetch and applying delays. No DevTools needed.
Browser Speed Test - Online Measure Download/Upload
Measure your internet connection speed by downloading and uploading a small test file. Works from your browser.
What Are My DNS Servers - Online Detect via Browser
Attempt to detect your current DNS resolver IPs using DNS‑leak test queries. Educational. Privacy‑friendly.
Random MAC Address Generator - Online Hardware Test IDs
Generate valid, random unicast MAC addresses for testing or spoofing. Select OUI prefix if desired. Local only.