Cost / License
- Free
- Open Source
Application types
Platforms
- Mac
- Windows
- Linux
Clop is described as 'Clipboard optimizer for macOS' and is a Image Optimizer in the photos & graphics category. There are more than 25 alternatives to Clop for a variety of platforms, including Windows, Mac, Linux, Web-based and iPhone apps. The best Clop alternative is ImageMagick, which is both free and Open Source. Other great apps like Clop are Caesium Image Compressor, TinyFast, FileOptimizer and RIOT - Radical Image Optimization Tool.
Experimental, fast Web PNG/JPG optimizer which offer lossless, visually lossless or lossy compression. it performs image reductions over iterations thanks to recursive multi-processing and multithreading systems.

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 .


JPEGmini is a patent-pending photo recompression technology, which significantly reduces the size of photographs without affecting their perceptual quality. The technology works in the domain of baseline JPEG, resulting in files that are fully compatible with any browser, photo...
JPEGmini is the most popular commercial alternative to Clop.
Phatch is an user friendly, cross-platform Photo Batch Processor and Exif Renamer with a nice graphical user interface. Phatch handles all popular image formats and can duplicate (sub)folder hierarchies.



Minuimus is a file optimizer utility script: You point it at a file, and it makes the file smaller without compromising the file contents.
The best free and fast CDN for images, CSS, JavaScript, and open source. Statically is powered by multi-CDN: Google Cloud CDN, CloudFront, Cloudflare, Fastly, and BunnyCDN.

Statically is the most popular SaaS alternative to Clop.
C++ file optimizer. It supports PNG, JPEG, GZIP, and ZIP files.
From developers to developers: a cross-platform tool for losslessly image compression.

Gifsicle manipulates GIF image files. Depending on command line options, it can merge several GIFs into a GIF animation; explode an animation into its component frames; change individual frames in an animation; turn interlacing on and off; add transparency; add delays...
Utilities for archiving photos for saving to long term storage or serving over the web. The goals are: use a common, well supported format (JPEG), minimize storage space and cost, identify duplicates / similar photos.

TruePNG is one of the most advanced PNG optimizers available. It does the most exhaustive checks for reductions, that lets it to optimize further, even if it uses a less efficient compression algorithm than others tools.