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Facebook images sizes
Depending on what you’re trying to do, there are a few different image sizes you should be aware of. Here are the sizes you need to know to post on Facebook:
Cover image: 820 x 312 minimum 400 x 150
Profile image: 180 x 180
Shared post image: 1200 x 630
Shared link preview image: 1200 x 628
Event image: 1920 x 1080
READ MORE: https://azstrategicmarketingservices.com/your-social-media-image-size-cheat-sheet/