Achieves significant size reduction by intelligently minimizing redundant data.
Supports both perfect fidelity and visually indistinguishable compression.
Visual differences are mathematically constrained below human perception thresholds.
Multi-threaded and SIMD-optimized for extremely fast compression.
Runs consistently across Windows, macOS, and Linux.
Attozip fully supports RAW images
Preview compressed images directly without extraction.
Instant previews via built-in thumbnails without full decoding.
No uploads, no cloud — all processing stays on your system.
Same input always produces identical output across runs and systems.
Each format is handled using format-specific compression logic.
No need to wait to see the complete image till the image fully loads.
Attozip also fully supports images with animations such as GIF or WEBP.
Up to 32 bits per channel for higher precision image representation.
JPEG XL streamlines image authoring with features like layer support, up to 4099 channels.