Image files must be saved as .PNG or .JPG. There is no size limitation for images in ArtBinder; however, we suggest keeping the image file sizes to under 8MB each for quicker uploading time.
For iPad and iPhone display, we recommend a minimum resolution of 2048‑by‑1536 at 264 pixels per inch (ppi) for devices with retina screens, or a minimum resolution of 1024‑by‑768 at 163 pixels per inch (ppi) for screens without retina display.
Note: When uploading images, you may notice a caution icon appear over an image’s thumbnail. When the image size is less than ideal – less than the iPad screen size – the image loads with the caution sign but there is no issue with the file other than the image not filling the iPad screen.