Native Follow Main Image Required: Yes Dimensions 1050 x 1050 pixels 1200 x 627 pixels Format .jpg .gif .png Max File Size: 100K Icon Image Required: Yes Dimensions 300 x 300 pixels Format .jpg .gif .png Max File Size: 100K Video with Image Required: Yes Format: .mp4 Max File Size: 10MB Notes Please refer to video specs for full specs Icon image required please see specs above Content Specs Headline Text 30 characters Caption Text 140 characters Sponsored Text 25 characters Other Specs Impression Tracker Not Required, but must be 1x1 secured URL Click-Through URL Required