This free tool is so great: Landscape by Sprout Social
Sprout Social has built a 100% free web application that allows you to automatically reduce/adjust each image to one or more formats/aspect ratios for use on the social media platforms below.
According to Sprout Social, the tool is specifically designed for all social media marketers and content creators as an efficient solution to instantly generate multiple image formats that are optimized for profiles, messages and campaigns on social media.
Landscape by Sprout SSocial automatically generates photo formats for the social media channels below.
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