Image Link is the link of the image. It begins with "http". You can grab those from any image that you want to test your download speed against
Image Size (KB) is the size of image in Kilo Bytes. The size of image should be accurate to accurately measure your download speed from that server
Download Speed (MBps) is your measure download speed against the image Link and image size mentioned. The speed is available in MegaBytes per second
Press Begin Test to determine your average internet speed.
Here are some sample images...
|Size (KB)||Image URL|