In general you should always upload background images that are larger or equal to the background image size of the certificate you are creating. Images that are either smaller or larger than the background certificate size are automatically resized to fit the appropriate area, however smaller images that need to be scaled up to fit the background dimension size can become blurry or grainy. Whenever possible you should upload the largest, and highest resolution graphic for your certificate. If you have access to a scalable vector graphic (.svg), it can be resized and will not lose image quality. This is the preferred method for uploading images, to preserve the best possible resolution. Please note the maximum file size that you can upload for a background graphic is 2 MB.