## TL;DR

Ads do not affect an internet speed test.

## Contents

## Introduction

It is sometimes suspected that advertisements may interfere with the measurement of your internet speed. In this test we investigate whether this is the case for Ookla's Speedtest.

## Method of measurement

For this test, we use a normal browser (Chrome) and a secure browser (Brave) and run Ookla's Speedtest 5 times.

Both browsers use almost the same version.

The Chrome version is: 122.0.6261.94 (Official Build) (64-bit)

The Brave version is: 1.63.169 Chromium: 122.0.6261.111 (Official Build) (64-bit)

Because we had already found in the past that the browser used has no influence on your internet speed, we now assume that the browser used indeed has no influence.

## Speed tests to test

For this test we only test Ookla's Speedtest.

## The measurements

With an advertised download speed of 100 Mbps, we measure the following:

- Brave: 100.06, 100.88, 100.94, 100.95 and 100.92 Mbps
- Chrome: 100.97, 101.15, 101.08, 101.03 and 100.94 Mbps

## Conclusions

Based on the above measurements, we conclude that:

- Without ads (Brave):
- The average download speed is: 100.75 Mbps
- The median is: 100.92 Mbps
- The standard deviation is: 0.4 Mbps

- With ads (Chrome):
- The average download speed is: 101,03 Mbps
- The median is: 101,03 Mbps
- The standard deviation is: 0,1 Mbps

Whether or not advertisements are displayed while performing a speed test does not significantly affect the measurement.