Caesium Image Compressor
Caesium Image Compressor is a free, open-source image compression tool designed to reduce photo and image file sizes by up to 90% without visible quality loss. It supports common formats including JPG, PNG, WebP, and TIFF, and includes batch processing capabilities for compressing multiple images at once. The app is popular with photographers, content creators, and anyone managing large digital photo libraries who need to save storage space and speed up uploads and transfers. Users appreciate its simplicity, effectiveness, and the fact that it's completely free with no ads or paywalls.
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1 suggestionCaesium Image Compressor is actively maintained as an open-source project on GitHub. The developer has not yet released a native Apple Silicon or Universal Binary version; version 2.8.5 is Intel-only and requires Rosetta 2. However, since the project is actively developed, there is a reasonable chance a native version may be released in the future. You should monitor the GitHub releases page for updates. In the meantime, the app will continue to work on Apple Silicon Macs via Rosetta 2 emulation. If you need a native alternative immediately, consider using the free online version at caesium.app, or explore other native image compression tools like ImageOptim (which has native Apple Silicon support) or built-in macOS tools like Preview, which can batch-compress images without installing additional software.
Native version · Reported by in the community.
Sighting data is community-sourced — version availability and pricing should be verified with the developer.
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