Website Speed Test
Articles, guides, and in-depth tips for the Website Speed Test — everything you need to get the most out of it.
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What a Website Speed Test Actually Measures — and Why Two Tools Testing the Same URL Give Different Scores
Why a 95 Website Speed Score Doesn't Mean Real Users Experience It as Fast — Lab Data vs Field Data
A website scoring 95 in a lab speed test can still feel slow to real users — lab tests run on powerful servers with fast connections and empty caches, while real users are on phones, on 4G, seeing your site for the first time. Here's the lab vs field data distinction, what LCP/INP/CLS actually measure, why slow TTFB sets a floor no client-side fix can overcome, and the specific changes that move each Core Web Vital the most.
Bufferbloat: Why a 300 Mbps Speed Test Result Can Coexist With Terrible Video Call Quality
A speed test showing 300 Mbps can coexist with terrible video call quality — because throughput and latency-under-load are different things, and bufferbloat is specifically a latency problem that high throughput doesn't fix. Here's how oversized buffers interact with TCP to cause latency spikes under load, why AQM algorithms like CoDel and CAKE fix this, and how to actually test for it.
How Much Internet Speed Do You Actually Need? What Streaming, Video Calls, and Remote Work Require
Gigabit broadband is overkill for most households — a family of four watching 4K and video calling needs about 150 Mbps download. Here's what different activities actually require, why upload speed matters more for remote work than download, and how to run a speed test that reveals actual performance.
Why Your Speed Test Looks Fine but Everything Still Feels Slow
High speed test numbers don't guarantee fast internet. Latency, bufferbloat, WiFi overhead, and ISP congestion all affect real-world performance in ways throughput tests don't capture. Here's how to read speed test results and diagnose actual slowness.
Internet Speed Test — Measure Your Actual Download, Upload & Latency
Learn what download speed, upload speed, ping, and jitter measure, how to get accurate speed test results, and how to interpret your results against your ISP plan.
