So I turned on the Zopfli PNG compression in the Project settings and exported once more (this is much slower, and only suggested for final testing and release versions). Importing these in PubCoder and using the animation object to re-create the animation results in PubCoder saving new version at ~25kb per frame! That means Pubcoder increased the overall size of the originals from ~83kb to a whopping ~290kb! The background is transparent, with some edge anti-aliasing. I took a small animation of a fox running consisting of 12 frames, and each frame is around 7~8kb at 153 by 139 px. While PubCoder will not play these in the preview, as long as the Use Original Image option is used, these APNG files will play in Thorium reader (Windows/Mac/Linux) and the Apple reader. Drag and drop all the images into ImageOptim, and have at it! Possible that the files sizes will be reduced quite a bit.Īs for the animations: one option is to replace your animations with APNG files. This will instruct PubCoder to export the project with the original optimized assets intact.Īlternatively 2) export your current project as-is, use the unarchiver tool to unzip all the epub files, and replace the images with optimized versions. Then ensure that for each image in the Selection tab -> Image Options the "Use Original Image" option is checked. You have two optional workflows: 1) optimize the image assets before importing these into PubCoder (or replacing the existing ones with new optimized versions). Mac users have access to a reasonable effective optimizer in the shape of ImageOptim: But unfortunately not available for Macs. ![]() It is free, and in my opinion the best PNG optimizer out there. I always use ColorQuantizer to optimize transparent assets (PNGs) which does a brilliant job. ![]() ![]() I found PubCoder's PNG compression rather lacking and not very effective (but the same can be said of just about any other design software).
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