The Compression tab allows you to configure the image compression settings for your book. The lower the quality of images, the smaller the size of the resulting file.

 

Compression
Preset            iSpring Flip offers four preset compression modes that optimize a book for the web with low or high connection speed. You can also create up to five custom compression  presets to suit your needs.

You can save a custom preset by clicking the Save preset button. To delete a custom preset, click Delete.

  

Image Compression
Image Compression            If you choose Smart mode, all images will be saved, keeping their high quality and small size. Read more about Smart compression in the iSpring blogLossy compression will convert and save all embedded images to .jpg format. Lossless compression converts all images in your book with the highest quality.