Images should be 2048 pixels on the long size and 2 mb or less in size. Please watermark your images before uploading. If your images are larger than 2 mb, we suggest you use compression software to make them smaller. There are several programs available. I use uPic on my Mac which I got free from the App Store. For a PC I’ve heard JPEGmini is good. If you don’t want to download a new program, you can use this free image compressor online.
(If file size vs. image dimension are still a mystery to you, please see this well written article.)
For multiple images, drag them together as a group to the gray box. They will all get the same title, but you can edit titles after they are uploaded on your dashboard page.