1 Camino Home Answered #Tips Main photo What is the best format for main photo to be seen on mobile? 11 BrookAve Define what you mean by format? Better to take photos using the pulse app to upload directly B. Account Adviso… Hi Camino Home, We recommend using high resolution photos at least 2048 x 1080 pixels but preferably 4000 x 3000 pixels (the maximum uploadable file size for a single photo is 19MB). Landscape (horizontal) images look best on Booking.com. Most smartphones take high resolution photos nowadays which makes very easy to upload your photos to your listing via the mobile Pulse app. Let us know how you go! Kind regards, Shirley E.