Best for page weight, uploads, and delivery files
A JPG compressor is most useful when the image already looks the right size on the page but still adds unnecessary weight. That is common with product images, blog photos, and handoff files.
JPG CompressorCompress JPG images,
Compress JPG images,
without pushing quality too low
Make JPG files lighter for websites, blogs, and uploads with a local-first workflow that keeps the original when the savings are not worth the tradeoff.
Custom · Keep original format · Smart optimization (recommended) · Original resolution
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
Use JPG compression when the dimensions are already right
If a JPG already fits the layout but still feels too heavy, compression is usually the cleanest next step before you consider a different format.
Stop when the image still looks the same
The goal is not to find the lowest possible number. It is to reduce the file until the visible result still feels unchanged in the place the image will actually be used.
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.