The amount of JPEG compression should really depend on the usage purpose for the JPEG, and the contents of the JPEG. The quality level one should choose when exporting an image to JPEG is highly dependent upon the kind of detail contained within the image.
An actual RGB encoded JPEG file is not very common. You should be able to submit the photos as is. JPEG files are usually encoded from an RGB source image into a YCbCr intermediate before they are compressed, then when decoded are rendered back to RGB. YCbCr allows the brightness component of the image to be compressed at a different rate than the color components, which allows for a better compression ratio.
GIF file open in Microsoft Windows Photos GIFs are a common format for web graphics, especially small images and images that contain text, such as navigation buttons. However, JPEG images are better for showing photos because they are not limited in the number of colors they can display.
PNG-24 allows you to render images with millions of colors – much like JPEG – but also offers the ability to preserve transparency. Because PNG-24 is a lossless format file type, you are likely to get larger files, but if image quality is more important than file size, PNG-24 is your best option.
If you do shoot in Raw, your computer rather than the camera will process the data and generate an image file form it. Guess which has more processing power: your digital camera or your computer? Shooting in Raw will give you much more control over how your image looks and even be able to correct several sins you may have committed when you took the photograph, such as the exposure.
TIFF (Tag Image File Format) is a common format for exchanging raster graphics (bitmap) images between application programs, including those used for scanner images. TIFF (Tag Image File Format) is a common format for exchanging raster graphics (bitmap) images between application programs, including those used for scanner images.