Useful for blog body images and product grids
A JPG resizer is especially useful when editors are shipping one oversized master image into many smaller slots. Matching the real slot size removes weight before quality tradeoffs even begin.
JPG ResizerResize JPG images,
Resize JPG images,
before they slow the page down
Reduce JPG dimensions to match the real layout size first, then compress further only if the file is still too heavy.
Custom · Keep original format · Smart optimization (recommended) · Post body (1200px)
Format
Quality preference
Resize
Drag & drop JPEG, PNG, WebP, or AVIF images
You can also click to choose files.
Supported formats: JPEG, PNG, WebP, AVIF.
Drop entire folders at once or seamlessly process ZIP archives with Pro.
JPEG, PNG, WebP, AVIF
Free 10 MB · Pro JPG/JPEG, WebP, AVIF 100 MB · PNG 40 MB
Some formats may produce different results depending on your browser environment.
Real Comparison
A real photo, compressed on-device.
This desert photo was compressed in KaruImg using the same in-browser process you get on the homepage. Drag the slider to compare the detail with the smaller file size.
Source size
5.3 MB
Result size
839 KB
Size reduced
84.5%
Sample photo licensed via Unsplash
Original
KaruImg result
What to know
Resize JPGs when the page is downloading more pixels than it needs
If the image is much larger than the slot it fills, resizing usually improves page weight more safely than pushing compression harder.
Resize first, then decide whether compression is still needed
Once the pixel count is closer to the display size, the file often becomes easier to compress without visible damage. That order keeps optimization cleaner and easier to trust.
Why KaruImg
Smart compression, strictly private by design.
Drop in your images and let KaruImg lighten them in your browser. If there is no real size win, it safely keeps the original.
Processed right on your device
Fast and safe processing directly inside your browser without any installations or server uploads. Your files never leave your device.
Smartly keep the original
If there’s no size benefit, we keep the original—without degrading quality.
Automatic optimization flow
No complicated quality sliders. We analyze each file and automatically choose the best compression settings.