Make a photograph smaller without it looking worse.
This file stays on your device
Drop files here
Up to 30.0 MB
Lower makes a smaller file.
WebP holds a photograph at roughly a quarter to a third less than JPG for the same appearance. On a page full of photographs that is the difference between a site that feels quick and one that does not, and page speed is something search engines measure.
The picture is decoded and encoded again, so a little of what the JPG kept is lost a second time. Converting at a high quality setting keeps that invisible. Converting an already poor JPG will not rescue it.
Do not convert back and forth between JPG and WebP repeatedly. Each round costs a little detail, and the losses add up in a way that is obvious once it is too late.