| Price from | Free | Free |
| Free plan | Yes | Yes |
| Free trial | — | — |
| Open source | — | — |
| Web | — | Yes |
| macOS | Yes | — |
| API | — | Yes |
| Plans published | 3 | 5 |
| Spec score · Image Compression Software | 8.5 (#17) | 8.7 (#10) |
| Batch processing | The app supports batch processing, resizing, conversion, and renaming, with parallel processing on multicore systems. | Yes |
| Compression | The maker says Optimage can reduce image size by up to 90% without losing visual quality. | The homepage says Pixozip can compress images by up to 90% without visible quality loss. |
| Compression modes | both | both |
| Free plan | Yes | Yes |
| Integrations | The maker lists integration with Finder and Sketch, a command-line tool, and sharing through extensions in the Share menu. | The maker lists WordPress and OpenCart plugins, plus Node.js and PHP SDKs and a REST API. |
| Metadata controls | Yes | Yes |
| Image resizing | Yes | Yes |
| Support | The maker invites questions and comments by email to Vlad Danilov or through Twitter. | The pricing page lists community support for Free, email support for Starter, priority support for Pro, and dedicated support for Scale. |
| Supported formats | JPEG,PNG,APNG,GIF,SVG,WebP,HEIC,PDF,JPEG2000,TIFF,RAW,ICO,ICNS,BMP | JPG,JPEG,PNG,WebP,AVIF,JPEG XL,GIF,TIFF,SVG |