Mouse DPI tester

[Cole327]

Hi, I was hoping somebody could help. I was watching a LTT vid (not sure if it was old or new, but i think i watched about 2-3 weeks ago) - and Linus mentioned a website that would tell you your mouse DPI, you just click the cursor - drag it around a bit, and it would tell you the results. No need to download anything or make ruler measurements on your mouse pad etc. At that time I went to the site, but now I can't find it again even after tons of searching through my history and re-watching a bunch of LTT vids (also checking everything that came up on google searches for "mouse tester", "dpi test", "online dpi tester", etc.). Does this sound familiar to anybody? Thanks in advance for any help!