We recommend a minimum size of 256 x 256 pixels for logos and icons. We also advise you to use a square image, as the system may distort your company logo or chosen icon.
Use images you want to include in web push notifications (currently only supported by Google Chrome) with at least 720x480 pixels and an aspect ratio of 3:2.
With appropriate images, you can increase the attention of your subscribers and interact with them better. Did you know that users click web push notifications with a photo five times more often than those without an image? Why are you still waiting? Try it out now!