OIMG vs Optimizilla
OIMG
oimg.orgOptimizilla
imagecompressor.comSide by side
| Figure | OIMG | Optimizilla |
|---|---|---|
| Price from | Free | $9/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | — | Yes |
| Windows | Yes | — |
| macOS | Yes | — |
| Linux | Yes | — |
| Plans published | 1 | 4 |
| Spec score · Image Compression Software | 7.7 (#56) | 8.9 (#5) |
| Compression modes | both | both |
| Free plan | Yes | Yes |
| Quality controls | OIMG computes Pixel Match Percentage, MS-SSIM, and SSIMULACRA 2 in real time. | Users can adjust image quality and preview the result before saving. |
| Support | The maker provides an email address for support and custom license inquiries. | The pricing comparison lists Community support for Free, Email support for Pro, and Dedicated support for Enterprise; the Enterprise plan also lists phone and chat support. |
| Supported formats | PNG,JPEG,WebP,AVIF,JPEG XL | JPEG,PNG,WebP,GIF,SVG |
Plans
In their own words
Optimizilla
Optimizilla is a web image-compression tool for JPEG, PNG, WebP, GIF, and SVG files. It processes images in the browser, supports batch work, and lets users adjust quality and preview the result before saving. The compressor uses format-specific handling: JPEG quality is inferred from quantization tables with a default target of 80; PNG files become PNG8 with up to 256 colors while preserving transparency; and animated GIF optimization reduces the palette while retaining frames. Compressed images have EXIF, GPS, and camera metadata removed. The site says files are not uploaded to its servers. Its free plan is free, with no registration, daily limit, or watermark, and is described as allowing unlimited compression. The pricing page also lists a 25 MB maximum file size and batches of up to 50 files for Free. Pro costs $9 a month and includes unlimited file size and batch uploads, among other tools. Enterprise pricing is custom and not listed; its plan includes custom integrations, without naming partners.