ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.


Thumbor is described as 'Smart imaging service. It enables on-demand crop, resizing and flipping of images. It features a very smart detection of important points in the image for better cropping and resizing, using state-of-the-art face and feature detection algorithms (more on that in' and is an app. There are seven alternatives to Thumbor for a variety of platforms, including Web-based, Mac, Windows, Linux and Wordpress apps. The best Thumbor alternative is ImageMagick, which is both free and Open Source. Other great apps like Thumbor are Optily, ShortPixel Image Optimizer, Imagify and Thumbr.io.
ImageMagick is a software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX.


Unlock the true potential of your Webflow sites with Optily - the ultimate time-saving solution that effortlessly optimizes your CMS images, boosting performance.



ShortPixel is arguably the top WordPress image optimization plugin: simple to set up, it can automatically optimize both your old and new images, as well as PDF files.






Thumbr.io is a powerful image thumbnails and processing on the fly for developers. Serve responsive images, cropping, compress, and generate website and doc previews.
Optimole is your all-in-one image optimization solution for WordPress & beyond, it processes your images in real time and is fully cloud-based (doesn’t strain your server).

libvips is a demand-driven, horizontally threaded image processing library. Compared to similar libraries, libvips runs quickly and uses little memory. libvips is licensed under the LGPL 2.1+.