Frequently Asked Questions

How does the WRLDU speed test work?

Your browser opens several parallel connections to public test endpoints on large content delivery networks, transfers test data, and reports the throughput it achieved. It also measures ping (round-trip time) with small requests to nearby cloud endpoints, and jitter (variation in ping).

What is the difference between download and upload speed?

Download speed is how fast data reaches your device, which affects streaming, browsing, and downloads. Upload speed is how fast data leaves your device, which affects video calls, cloud backups, and live streaming.

What are ping and jitter?

Ping is the time in milliseconds for a small packet to reach a server and return. Jitter is how much that time varies. Low and steady values matter most for gaming and video calls.

Why is my result lower than the speed I pay for?

Plans advertise maximum speeds, usually measured over a wired connection. Wi-Fi distance, walls, interference, old equipment, other devices, and provider congestion all reduce what you measure. Try an Ethernet cable and pause other downloads.

How accurate is the test?

It is an estimate. Results depend on your device, browser, network, and the route to the test endpoints, so they can differ from other speed test services. Running the test several times and comparing is the best approach.

How much data does a test use?

A test transfers data in both directions for several seconds, so faster connections use more. Expect from tens to a few hundred megabytes. Take care on mobile plans with small data allowances.

Is WRLDU free? How does it pay for itself?

Yes, it is free and needs no account. The site may show advertising, including Google AdSense, to cover hosting costs. Ads never change your results.

Which servers does the test connect to?

The transfer and latency tests use public endpoints on large content delivery networks and cloud platforms, including Cloudflare's public speed-test service. These third parties can see your IP address in the same way any website you visit can. Because the endpoints are not operated by WRLDU, results reflect your connection to those networks.

How can I get the most reliable result?

Use an Ethernet cable, close other apps and downloads, disconnect VPNs, and make sure nobody else on your network is streaming or backing up during the test.

How do I report a mistake or contact you?

Email rafeleiffel1802@gmail.com or use the Contact page. See our Editorial Policy for how corrections are handled.