Compress Image to 40KB: is this the right limit?
This preset starts the image compressor at 40KB. It is most useful when the website, application, or document portal accepting your image specifies that maximum. The result depends on the source image; a target is not a promise of identical quality or exact output size.
When this target makes sense
a small web or application upload with a strict 40KB ceiling.
Practical advice for 40KB
Remove irrelevant margins and check whether the destination accepts the output format. If the image contains small labels, zoom in on the preview to ensure the compression has not made them unreadable.
Forty kilobytes gives simple graphics more room than the smallest targets, but detailed photos can still lose visible quality. Try a less aggressive limit if the destination allows it.
A reliable image-compression check
- Check the destination's maximum file size, accepted format, and required pixel dimensions.
- Upload up to three images (20MB maximum each), crop unused content if helpful, and keep the 40KB preset unless you need another limit.
- Compress and review the resulting image. Confirm its actual size and that important text, edges, and subject details remain clear.
- If it is still too large or no longer readable, try a more focused crop or a larger limit if the destination allows one.
Choose a different image size
Use the limit required by the receiving site. These presets change the starting target; the tool also lets you adjust it.