Quick answer
A lot of people do not look for image optimization until a real platform rejects the upload. That could be a CMS, a marketplace listing form, or a social post that becomes frustrating because the files are too heavy.
In those cases, both file size and dimensions matter. A product image may need to stay visually clean while becoming light enough for fast loading. A CMS asset may need to stay under a platform limit while still matching the expected width and height.
What usually works best
That is why the new ExactSizer image controls matter. You can now target a strict file size, choose whether to prioritize quality or resizing, and control the output by percentage or by exact dimensions.
This is useful for ecommerce teams, bloggers, marketers, and support teams who need a faster way to prepare images. Instead of exporting, reuploading, and retrying over and over, they can adjust size and dimensions in one place.
If it still fails
People also search for this problem in different ways. Some type compress image, others search resize image to KB, reduce image size online, or a target like 100KB, 200KB, or 1MB. The useful part is having both compression and resize controls in the same tool.
For many users, the real problem is time. They need an image that uploads correctly, loads quickly, and still looks good. A size target plus dimension control usually gets them there faster than a generic optimizer.