The world’s most powerful patented lossless image compression technology.
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i Patented Technology
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Savings

5× Savings.

Speed

Under 1s.

Support

30+ Formats.

Light

Just 250MB.

Easy

One-Click.

Efficient

C / C++.

AttoZip Image Viewer
Download AttoZip Image Viewer and open 100+ image formats instantly.
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FAQs

What is AttoZip?
AttoZip is an advanced next-gen image compression engine.
Is it lossless?
Yes, AttoZip preserves 100% pixel-perfect detail in lossless mode.
How fast is it?
It uses multithreading + SIMD for maximum encoding speed.
Does it work offline?
Yes, everything runs locally on your system.
Does it support batch processing?
Yes, you can compress entire folders in one click.
What OS does it support?
Windows, Linux, and macOS builds are available.
Are updates free?
Yes, all updates are free for lifetime.
Does it compress videos?
Currently no, image formats only.
Is there a CLI version?
Yes, a developer-friendly CLI tool is included.
What are the environmental benefits of using AttoZip?
Smaller file sizes lead to reduced bandwidth usage and energy consumption during storage and transmission.
Endless Possibilities
Image Types Overview
AttoZip unlocks new workflows across photography, design, production, and the web.
Environmental Impact
If all currently supported images were delivered as AttoZip (with an average 20% reduction in file size), we could save:
6.92
GWh
per day
Equivalent to powering 692,000 average US homes for an hour and saving 4,974 metric tons of CO₂ emissions per day.
Android & iOS Support
Compress images on your phone in a single tap by connecting your smartphone to your PC through Wi-Fi or Bluetooth.
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Contributors
Google Cloudinary Jetbrains
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