Pick JPG for photos and simpler delivery
JPG is still practical when the image behaves like a photo and transparency is not important. It is often the easiest choice for general delivery and lighter sharing.
ConvertConvert image formats locally,
Convert image formats locally,
and choose the right output
Move between common web formats in the browser, then decide which output best fits the image job without shipping originals to a server.
Your photos won't shrink or blur. Keeps original dimensions and sharpness while only reducing file size (MB).
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
Choose the output format that fits the job
Use this page when you still need to decide between PNG, JPG, WebP, and AVIF rather than heading straight into one exact conversion path.
Use PNG, WebP, or AVIF for different reasons
PNG is useful for transparency and crisp graphics. WebP is often the most practical modern web format. AVIF can save even more weight when the workflow and browser support make that tradeoff worthwhile.
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.