BeFunky currently supports saving in JPG and PNG file formats.
When should you save as JPG?
JPG works best with realistic images and photographs. It is a lossy compressed file, meaning after the image is saved, certain data that is lost cannot be recovered. Each time you re-open and re-save a JPG you will lose trace amounts of quality. Because of this, it is not suggested for archival format purposes. It also cannot support transparency. It is most useful for digital photography and online image sharing, as it is widely supported across the web, and is smaller in file size.
Avoid JPG When: You are using text-heavy images and images with sharp lines, and when you plan to save numerous times through out the edit process. Also, when attempting to hold any transparent elements within the image, as this is not possible.
Takeaway: Make sure compression is low, with minimum exports to maintain best possible quality. JPG has the ability to hold camera-specific information, making it best for real-world photography. It also tends to have a much smaller file size, making it much better for online use and sharing.
When should you save as PNG?
Unlike JPG, PNG has lossless compression, so there is zero loss in quality no matter the amount of times it is re-opened and re-saved. It also supports image transparency (usually appears as a checkered background with most photo editors, BeFunky included) which makes it great for brand images, logos, text heavy images and screenshots. However, PNG does not support the storage of certain image information linked to the camera in which the the image was taken with (hence why JPG is better suited for photography.) PNG usually has a larger image size as well.
Avoid PNG When: You are working with images that contain important data relating to the camera used to capture it. You're also better off using JPG when sharing a photo online, as PNG files tend to be much larger in comparison to JPG.
Takeaway: PNG is best for digital graphics and non photography-based images. You won't lose data when re-opening and re-saving, and PNG supports the use of transparency.