ImgSmaller is described as 'Privacy-first image compression tool that lets you compress JPG, PNG, and WebP images directly in your browser. No data leaves your device thanks to our Zero-Upload Mode. If your browser doesn't support this, the image is temporarily uploaded to our server' and is an website in the security & privacy category. There are more than 50 alternatives to ImgSmaller, not only websites but also apps for a variety of platforms, including Windows, Mac, Linux and SaaS apps. The best ImgSmaller alternative is Caesium Image Compressor, which is both free and Open Source. Other great sites and apps similar to ImgSmaller are XnConvert, ImageOptim, RasterFox and TinyFast.