Learn more
Resize Image to KB: the complete guide
Many online forms, exam portals and job sites ask for a photo with an exact pixel size and a maximum file size, such as 200 × 220 px under 35 KB. This tool does both in one step, entirely inside your browser, and tells you honestly when a combination is not possible.
Pixels and KB are two different limits
Pixel dimensions describe how wide and tall an image is. File size, measured in KB, describes how much storage the saved file takes. A portal can ask for both at once. This tool first resizes the image to your exact width and height, then lowers the JPG quality step by step until the file fits under your KB limit.
How the maximum size works
The size you enter is a ceiling, not an exact target. With a 35 KB limit, a 34 KB or 32 KB result is fine and a 36 KB result is not. The tool measures the real size of the final file, using 1 KB = 1024 bytes, and unlocks the download only if it is within the limit.
When a size limit cannot be met
JPG file size depends on the picture and the number of pixels. A detailed image at large dimensions may stay above a very small limit even at the lowest quality. In that case the tool tells you the smallest size it could reach instead of quietly changing your dimensions. Raise the KB limit or reduce the width and height and try again.
- Raise the maximum size a little, for example from 20 KB to 35 KB.
- Use smaller pixel dimensions if the portal allows it.
- Try a simpler photo with a plain background; these compress much better.
Why the result is always a JPG
JPG lets quality be tuned to hit a file size, which PNG cannot do in the same way. PNG and WebP images are converted to JPG, and transparent areas are filled with the background color you choose so they never turn unexpectedly black.
