I've posted before about file sizes and am still curious. I've recently used Affinity Photo to put together an 11.5 x 9" mailer for a client and was astonished that it was nearly 400mb. By comparison the same design in Pages is about 23mb. Attached screenshots show just the front side. On the Affinity document there is a second layer for the backside, on the Pages document it is a second page but in both cases the backside is fairly similar to the front side consisting of several images and various boxes and text.
As much as I love using both Affinity Photo and Affinity Designer I'm afraid I'll start shying away from using them if they are consistently producing files of that size. When I've got a bit of time I might try assembling the same flyer in Photoshop and InDesign to get an idea of file sizes in those apps.
Thanks in advance for any insight.
The large file sizes happen because our file format is optimised for loading speed rather than size. The original images were probably JPEG, but in we store them as ZIP which does not really compress photographs at all. To add insult to injury, we typically store the JPEG as well, and then store multiple copies of the image at successively smaller resolutions.
There was a plan to have a "minimise space" option on the Save dialog, but it's not happened yet. I think we will have to do something before Publisher, because Publisher documents could be hundreds of pages and have a lot of images.