Control the size of your speed test with manual test sizes.Manual tests sizes over 1.5 MB have the automatic forwarding feature disabled.Tests sizes auto adjust up to 100 MB depending on your Internet connection type.This is a true and trusted test of your Internet upload speed. Your provider may prefer testing within their network but is that realistic? provides a real world scenario not a best case scenario which makes this speed test a more accurate representation of your true bandwidth. 's servers are hosted where the websites you visit are hosted.