CG Cookie recommends uploading JPG file formats of your renders or photos to the gallery to have them shine their very best. 😎 They are smaller files and will hold more true to the original format while viewing online.
When you’re dealing with online photos and/or artwork. JPEGs offer you the most flexibility with raster editing and compression making them ideal for web images that need to be downloaded quickly. - 99designs.com
Would you like to know all about the various file formats? Read the full guide from 99Designs. -