How Do I Make an Image Small Enough for a Website Upload?
First check whether the website specifies a maximum file size or pixel dimensions. Then resize to the required dimensions and compress the result.
What to do
Do not blindly chase the smallest possible file. The correct target is the smallest file that still meets the site’s visual and technical requirements. The simplest next step is to Image Size Checker. If the issue is actually about compress image, see Compress Image as well.
Why this happens
Image problems often come from three separate variables: pixel dimensions, encoded file size and file format. Changing one does not automatically solve the others. A very large photo may need resizing even when its format is already JPG; a transparent graphic may need PNG or WebP even when the file size is acceptable; and an upload limit may be measured in megabytes rather than pixels.
Before editing, check the requirements of the place where the image will be used. That gives you a concrete target and reduces unnecessary quality loss. When possible, keep the original file and create a delivery copy for the specific destination.
Common questions
What if the upload says “maximum 2 MB”?
Treat 2 MB as a hard ceiling and leave some margin rather than targeting exactly 2 MB.
What if the website requires a width and height?
Meet those pixel dimensions first, then optimize the file size.
Why does my image pass the dimensions but fail the upload?
The file may still exceed the byte limit, use an unsupported format, or contain an encoding the destination does not accept.