Quick guide
How to decrease image size in KB
- Choose an image from your device.
- Enter the maximum output size in KB.
- Choose JPEG or WebP.
- Select Reduce image size, review the output, and download it.
Quality reduction before dimension reduction
The tool first keeps the original pixel dimensions and searches for the highest encoding quality that fits the target. If quality changes alone cannot reach the requested size, it gradually scales down the image dimensions.
This approach helps retain useful detail while still honoring the maximum-KB goal.
Choosing a practical target size
Small website thumbnails may fit below 100 KB, while larger product photos often need 250–500 KB for a good balance. A target that is far smaller than the source may visibly reduce detail or resolution.
Tip: use WebP for smaller modern-web assets and JPEG when broad compatibility matters most.