SammaPix vs ImageOptim
ImageOptim is the gold standard Mac desktop app. But it's desktop-only, has no AI features, and can't convert to WebP. Here's how they compare.
Choose SammaPix if you…
- Use Windows, Linux, or any non-Mac device
- Need WebP conversion built-in
- Want AI-generated SEO filenames
- Work in the browser with no installs
Choose ImageOptim if you…
- Are on Mac and prefer a native desktop app
- Need deep lossless optimization (MozJPEG, Zopfli, SVGO)
- Want to integrate with your local file system workflow
Feature comparison
| Feature | SammaPix | ImageOptim |
|---|---|---|
| Works in browser (no install) | ||
| Works on Windows / Linux | ||
| WebP conversion | ||
| AI-powered image renaming | ||
| AI alt text generation | ||
| Batch processing | ||
| ZIP download | ||
| EXIF metadata removal | ||
| JPG / PNG compression | ||
| Lossless compression | ||
| Free to use | ||
| No file upload to server | ||
| Mobile-friendly | ||
| Actively maintained |
The key differences
ImageOptim is Mac-only — SammaPix works everywhere
ImageOptim is a native macOS application. If you're on Windows, Linux, ChromeOS, or a mobile device, it's simply not an option. SammaPix runs entirely in your browser — open the URL and it works instantly, on any operating system, with no download or installation required.
WebP conversion — ImageOptim doesn't support it
ImageOptim compresses JPG, PNG, and GIF files but cannot convert them to WebP. WebP is 25-34% smaller than JPEG at equivalent quality and is now supported by all modern browsers. SammaPix converts any image to WebP in one click, entirely in-browser — no server upload required.
AI rename — ImageOptim has none
SammaPix uses Google Gemini to analyze each image and generate an SEO-optimized filename and alt text. Upload IMG_0042.jpg, get back red-ceramic-coffee-mug-wooden-table.webp — automatically. ImageOptim has no equivalent feature; it only compresses, never renames.
Where ImageOptim wins — lossless depth
ImageOptim chains multiple compression engines together — MozJPEG, Zopfli, SVGO, AdvPNG, Pngcrush — achieving some of the highest lossless compression ratios available. If you need the absolute maximum lossless optimization for a native Mac workflow and don't need WebP or AI, ImageOptim is hard to beat.
Need a web-based ImageOptim alternative?
SammaPix works on any device, converts to WebP, and renames your files with AI — free.
