Image Optimization Mode

Kraken.io offers several optimization modes The mode you select should depend on your specific requirements - such as the type of image that you are compressing, and the target audience of your images.

Our intelligent lossy optimization typically produces savings of at least 60% of the initial file weight; with savings of 80% to 90% occurring frequently. Our default intelligent lossy algorithm has been specifically designed to always produces images of outstanding quality, and never of unacceptable quality degradation. In most cases, you will not be able to tell the optimized result from the original, even upon close inspection. We recommend this mode to most of our users, and for most use-cases.

This mode will save as much file weight as possible without altering a single pixel, hence the name "lossless" - meaning no information is lost whatsoever. Use this mode when your requirement is that the image should retain 100% of its initial visual information - such as for sensitive brand and marketing visuals.

Expert view is designed for users who are already familiar with image processing and optimization. Using this mode you can set different quality levels for lossy JPEG and PNG optimization, preserve certain entries in the EXIF metadata, and automatically orient your images. You can even set a custom chroma subsampling value for JPEG images.