Lossless JPEG re-compressor Brunsli from Google (https://github.com/google/brunsli). The conversion process runs locally in your browser using WebAssembly.
Curtail Alternatives
Curtail is described as 'Curtail (previously ImCompressor) is a useful image compressor, supporting PNG and JPEG file types. It support both lossless and lossy compression modes with an option to whether keep or not metadata of images. It is inspired by ' and is a Image Optimizer in the photos & graphics category. There are more than 50 alternatives to Curtail for a variety of platforms, including Windows, Mac, Linux, Web-based and Google Chrome apps. The best Curtail alternative is Caesium Image Compressor, which is both free and Open Source. Other great apps like Curtail are TinyFast, ImageOptim, OptiImage and RasterFox.
Alternatives list
Mini-Compressor is an easy to use image compression tool. Compress images by right clicking on the images or folder of images. A viable alternative to other photo editing software if all you need to do is quickly compress a image.



Shrinks images and documents losslessly by optimizing existing compression. Run it comfortably in the background to save hard disk space and bandwidth.



