CloudConvert.com might as well be my fucking home page.
My problem is the way it’s packaged as a link to a website that hosts the jpeg image. Saving, modifying, and using the image file becomes impossible in some workflows. Imagine a future where you get fined for stealing memes. I bet they could make the image file size even smaller without all of that bullshit added in, until then I’m just using an extension to convert to png (which results in loss btw).
Converting FROM a format to a DIFFERENT FORMAT can cause loss. In this case from one compressed type to another.