Size: 300 x 600
File Size (max): 150k
Duration: 30 seconds maximum
Formats: jpg, gif, HTML5. Important: we also need jpg file as backup in case the HTML5 won’t load on user’s device (max 39K).
Rule: Multiflex with 300 x 250 and 300 x 1050 whenever page structure allows.
Option: Possibility of including videos.