1. Ping (Latenz): HTTP/2 Edge Proxy vs. ICMP / Native Sockets

Speedtests wie Ookla oder Command-Line-Pings nutzen native ICMP- oder TCP-Sockets direkt zu einzelnen Provider-Servern. Velocity läuft vollständig im Browser-Sandbox und misst die reine HTTP/2-Round-Trip-Time (RTT) zu globalen Edge-Proxy-Knoten. Dadurch spiegelt der Ping in Velocity die echte Latenz wider, die du beim Aufrufen moderner Webseiten, Cloud-Dienste und APIs hast.

2. Download-Engine: Parallel-Streams & TCP Slow-Start Warmup

Zu Beginn eines Downloads steigern TCP-Algorithmen ihre Fenstergröße schrittweise (Slow-Start). Velocity startet 6 parallele Web-Worker-Streams, verwirft die ersten 1.5 Sekunden der Anlaufphase (Warmup) und berechnet den echten anhaltenden Durchsatz (80. Perzentil). So wird verhindert, dass Puffer-Schwankungen dein Ergebnis verfälschen.

3. Upload-Engine: Echtzeit-Byte-Tracking via XHR Progress Streams

Während viele Online-Speedtests Uploads in großen Blöcken hochrechnen (was zu künstlichen Peaks oder Hängern führt), nutzt Velocity XMLHttpRequest.upload.onprogress in isolierten Blob Web Workern. Jedes Byte wird in Mikrosekunden-Präzision gemessen, sobald es deine Netzwerkkarte verlässt.

4. Warum unterscheiden sich Speedtests leicht voneinander?

Server-Standort & Routing: Jeder Speedtest nutzt unterschiedliche Ziel-Server. Ookla wählt oft lokale ISP-Server, Fast.com nutzt Netflix-CDNs, und Velocity misst gegen weltweite Edge-Cloud-Netzwerke.
Browser-Sandbox: Native Desktop-Apps greifen direkt auf Betriebssystem-Sockets zu, während Browser-Speedtests die Netzwerkschicht des Browsers nutzen.

📱 Mobile Setup (iOS Safari & Android Chrome)

iOS (iPhone / iPad): Open Velocity in Safari ➔ tap the Share button (square with arrow) ➔ scroll down and tap "Add to Home Screen" (+).

Android (Chrome / Edge): Tap the 3 dots menu top-right ➔ tap "Install app" or "Add to Home screen".

💻 Desktop Setup (Chrome / Edge / Firefox / Safari)

Chrome & Edge: Click the Install icon in the address bar (or 3 dots menu ➔ Save and share ➔ Install Velocity / Create Shortcut).

Firefox: Click the Install / Taskbar icon in the address bar or drag the page icon onto your Desktop.

macOS Safari: Click File in the menu bar ➔ Add to Dock.

1. Zero Installation & No Local Port Server

Desktop speedtests (like Ookla Speedtest for Windows) install an executable binary and host a local HTTP server on `127.0.0.1`. This regularly triggers Windows SmartScreen, App Control, and Firewall security warnings. Velocity runs 100% inside your browser sandbox with zero local server processes.

2. Strict Browser Sandbox Execution

Because Velocity uses standard browser APIs (Parallel XHR & Web Workers), it operates under browser sandbox isolation. It cannot touch your system files, read private local data, or execute unauthorized code.

3. 100% Privacy & Zero Telemetry Tracking

No tracking cookies, no personal telemetry collection, and no user profiling. All performance calculations happen locally in your browser memory.

Privacy Policy Statement

Velocity does not harvest, store, or sell personal user data, IP addresses, or browser footprints. Speed measurements are calculated strictly on your client device in temporary memory.

Open Technology

Built using standard HTML5, CSS3, and ES6 JavaScript with HTML5 Web Workers and Parallel XMLHttpRequest APIs.

2. 🔌 Connect via LAN Cable (Ethernet)

Wi-Fi signals suffer from wall interference and channel congestion. Switching to a wired LAN cable reduces ping by 5-15ms and eliminates jitter spikes.

3. ⏸️ Pause Background Streams & Downloads

Steam updates, cloud backups (iCloud/OneDrive), BitTorrent, or 4K streams on other household devices consume bandwidth and inflate ping (Bufferbloat).

4. 🔒 Disable Active VPNs or Proxy Servers

VPNs route traffic through distant encrypted servers, adding extra hops and latency. Temporarily turn off VPNs to test your raw ISP connection.

5. 🌐 Reboot Router & Use 5GHz Wi-Fi

Restarting your modem clears congested NAT memory. If on Wi-Fi, ensure you connect to the 5GHz or Wi-Fi 6 band instead of the slower 2.4GHz band.