When uploading Photos to listings on Flexmls, to achieve the optimal size for display,  the following criteria should be met:

• File Size: 15MB (Megabytes)
• Resolution: 3000 x 2000 (Pixels) 
• Format: jpg, jpeg, gif, png, tif, tiff, bmp, pgm, pbm, ppm

If the file is under 15MB, but greater than the resolution of 3000 x 2000, the system will size the image down to meet these requirements.