Internet speed testing reveals more than just how fast your connection is—it provides insights into network quality, routing efficiency, and real-world performance. This guide will help you understand what speed tests actually measure and why it matters.

Table of Contents

Explore our comprehensive guides to master internet performance concepts.

1. Speed Test Basics

Learn the fundamental metrics that define connection quality: Download, Upload, Latency, and Jitter. Understand why "faster" isn't always "better" for every use case.

5 min read Beginner

2. Testing Methodology

Discover why SpeedCheck tests from a fixed standardized server in Amsterdam rather than a local node. Learn about our multi-threaded architecture and scientific approach to measurement.

7 min read Intermediate

3. Technical Concepts

A deep dive into the networking protocols (TCP/IP, HTTP/2) and physics that govern internet speed. Explains bufferbloat, congestion control, and the technical stack.

10 min read Advanced

4. Troubleshooting Guide

Practical steps to diagnose and fix common connection issues. From Wi-Fi interference to ISP routing problems, learn how to optimize your setup.

8 min read Practical

5. Future of Testing

Look ahead at emerging technologies like 5G, Wi-Fi 7, and new transport protocols that will reshape how we measure and experience the internet.

6 min read Visionary

Why Accuracy Matters

In an increasingly connected world, your internet connection is a vital utility. Accurate measurement empowers you to verify service quality, diagnose bottlenecks, and make informed decisions about your digital infrastructure.