The definitive compression app

Your photos,
at their finest.

Up to 90% smaller. Same stunning quality.
Batch process, resize, crop — all in one app.
100% offline. Your photos never leave your device.

Download Free See the difference

No more trade-offs

You took the perfect shot. Now you want to share it.
But the file's too big to upload. Too heavy to send.
Compress it, and the quality tanks. Every time.

Karui (pronounced "ka-ru-ee") ends that struggle.
Next-gen compression. Batch processing. Resize. Crop.
Everything you need, in one powerful app.

No internet required. Runs entirely on your computer.
Drop hundreds of photos. Batch process them all.
Your memories stay private. Always.

See for yourself

Same quality. 35% smaller file.

Before 2.4 MB

After 1.1 MB

-54% 3.2MB → 1.5MB

-48% 2.8MB → 1.4MB

-52% 4.1MB → 2.0MB

Batch process hundreds at once

Drop your entire photo folder. SIMD-optimized engine handles them all in seconds. No more processing one by one.

Rock solid

Hundreds of photos. Thousands. Heavy files. No problem. The app won't crash on you. Ever.

Works everywhere

Output is standard JPEG. No special software needed. Every browser, every device, just works.

100% private, works offline

Your photos never leave your device. No cloud uploads, no tracking. Works anywhere, anytime — no internet required.

Mac and Windows

Same great experience on both platforms. A serious compression app for Windows — finally.

Simple pricing

One-time purchase. Not a subscription.

Standard

Get started for free

Free

10 images per day
Full compression engine
14-day Pro trial

Get Started

Pro

For serious work

$29 one-time

Unlimited compression
Batch processing
Resize & crop
1 year of updates
Perpetual license

Buy Pro

Your photos,at their finest.