Transcode
Drop files, pick a preset or a target size, and convert with hardware encoding. Trim, enhance and fix files along the way, all on your Mac.
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Diet Image is an image optimizer for Apple silicon Macs. Drop images or whole folders on the window, the Dock icon or a Finder Quick Action, and it tries several engines on each file, decodes every result to make sure it's valid, and keeps only the ones that are actually smaller.
It handles JPEG, PNG and GIF (animated too), SVG, WebP, AVIF, HEIC, TIFF and JPEG XL. Balanced looks unchanged, Lossless never changes a pixel, and Smallest goes further, with lossy results always marked. You can also fit every image under a size you choose, or convert to JPG, PNG, WebP or JPEG XL.
Originals are replaced safely and can be restored, or you can save beside them or export to a folder. Location, camera details and other metadata are controlled separately. Everything runs on your Mac in the sandbox, and nothing is uploaded.
Drop files, pick a preset or a target size, and convert with hardware encoding. Trim, enhance and fix files along the way, all on your Mac.
Each image is tried with several optimizers, and the smallest valid result wins.
Every output is decoded and checked before it replaces anything.
JPEG, PNG, GIF, SVG, WebP, AVIF, HEIC, TIFF and JPEG XL, animated files included.
Set a limit in KB or MB and get as much quality as fits, in the format you pick.
Replace with recovery, save beside the original, or export to a folder.
Finder Quick Action, Share menu, Services, Shortcuts, AppleScript and a command-line tool.
No special permissions are listed for this app.
About macOS permissionsNew About window with links to the Macloving website, support and privacy policy.
Fit images under a file size you choose, in KB or MB, keeping as much quality as possible
Download the app from this page or your library. Files come from Macloving's download servers.
Open the file and drag the app into Applications. macOS checks the app before it opens for the first time.
Free apps work right away. No account is needed.
Need help? Read installing an app and activating paid access. Macloving never asks you to turn off macOS security features.