Slimage
One image, or a whole folder.
Drop in files or folders and process a batch together. Review the results and compare images without losing track of your originals.
Image compression, made for Mac
Beautiful images.
Lighter files.
Make your photos, screenshots, and graphics easier to share. A thoughtful Mac app for compressing images, with you in control.
macOS 14 or later · Apple Silicon & Intel
Images stay on your MacBatch processingNative macOS experience
Less friction, more focus
A small app. A clear workflow.
Drop in your images, pick a preset, and let Slimage do the heavy lifting. A clean interface keeps the next step in sight.
A home for your image formats
From everyday screenshots to modern image formats.
JPEGPNGWebPHEICAVIFJPEG XLSVGGIFTIFFBMP
Just the tools you need
Built around your images.
Find your balance.
Six quality levels, from smaller files to higher fidelity. Start with the balanced Q3 setting, then fine-tune for the job.
On your Mac. In your hands.
Image processing happens locally, without uploading your files. Compressed results are saved separately, keeping originals safe.
Local image processing
Your workflow, remembered.
Start with Everyday, Web, or High Quality. Create as many presets as you need, export and import settings, or sync them with iCloud.
EverydayWebHigh Quality
From full-size to ready-to-share
Three steps. That’s it.
- 01
Bring your images.
Drag files or folders into Slimage, or select them from Finder.
- 02
Make it your own.
Choose a preset. Adjust quality, output format, or dimensions for supported images.
- 03
Keep what works.
Review the results and open the output folder. Your original files stay untouched.
A lighter way to work
Make a little room for Slimage.
Thoughtful image compression, right on your Mac. Your images, your settings, your space.
Website edition · In-app updates
App Store edition · Updates from Apple
Slimage is in development. Both download options will be available after release.
macOS 14 or later · Apple Silicon & Intel
Do my images leave my Mac?
No images are uploaded for compression. Processing happens on your Mac. Optional iCloud sync shares supported settings and presets between your Macs, not your images.
Will Slimage replace my originals?
No. Results are saved as separate files. For ordinary compression, Slimage skips a result if it is not smaller. An explicitly requested resize or format conversion may produce a larger file.
Which formats are supported?
JPEG, PNG, WebP, HEIC, AVIF, JPEG XL, SVG, GIF, TIFF, and BMP. SVG and GIF are optimized at their original format and size. Eligible single-image TIFF files can be optimized; BMP requires format conversion. PDF and HDR/Gain Map images are currently skipped.
Can I save and share my settings?
Yes. Slimage includes three editable presets and lets you add your own without a preset limit. You can export and import configuration files, or enable iCloud configuration sync. Local folder permissions stay on each Mac.
What kind of Mac do I need?
Slimage requires macOS 14 or later and supports both Apple Silicon and Intel Macs. A website download and a Mac App Store edition are planned; public downloads are not available yet.