Below are the most important specs for common ad placements we run.

Facebook:

1. Square – 1080×1080
2. Story – 1080×1920

Google:

1. Medium Rectangle – 300×250
2. Large Rectangle – 336×280
3. Leaderboard – 728×90
4. Half Page – 300×600
5. Large Mobile Banner – 320×100
6. Under 5mb.

Pinterest:

1. Static Pins – 2:3 ratio

TikTok (Video):

1. 9-15 seconds.
2. In-feed video – 1:1, or 16:9
3. Under 500mb.

Reddit Ads:

1. Thumbnail – 400×300
2. Card – 1200×628