Resize to an exact size and exact dimensions
Set width, height, target size, and format. Dimensions are never sacrificed to hit the byte target.
Questions
What happens if the size and dimensions conflict?
Dimensions win. If quality can't be lowered enough to hit your target at that exact width and height, Image KB Reducer gives you the smallest file it can produce at those dimensions and tells you honestly how far off it is — plus a working download of that file, and a one-click switch to a format that would fit if one exists.
Why would WebP fit when JPG doesn't?
WebP's encoder generally holds detail better than JPEG at very low bitrates, so at the same pixel dimensions it can often land under a target JPEG can't reach. Image KB Reducer only offers the switch when its search says that format is the next rung worth trying — and it never switches on its own.