right click on the image, and it will automatically convert it to a png.

webp is a much smaller file size, and is much less resource intensive, while offering the same resolution as png. i realize everyone relentlessly hates on this format, but at 10x smaller than a png, it's really fucking good for galleries.

i do quite genuinely wish that file browsers would just natively support the format, because honestly, it's one of the better image formats around. it's literally like webms, which no one has an issue with because support hasn't taken THIS LONG to catch.