When uploading photos you should only use images of the best possible quality. A resolution of 3600 x 2800 pixels serves as a good guideline and approximately equates to the performance of an 8-megapixel camera. Resolution is especially important when images or PDFs are being displayed in full-size mode.
Images are automatically adjusted by our system in order for them to display properly on tablet and smartphone screens. If the dimensions of an image are significantly below the required standard, it may be displayed within a gray frame.
A suitable file format for images is JPEG of high quality (80-100%). Other options are BMP, GIF and PNG.
Pictures in landscape format are automatically recognized as such and will carry a typical aspect ratio of 16:9. By contrast, portrait images might appear cropped outside the full-screen. Very wide images are automatically recognized as panoramas.