OpenGraph.xyz displays previews of how your content will appear when it gets shared on Facebook, Twitter, LinkedIn and Discord.

Facebook’s sharing debugger tool will warn you about any issues with your Open Graph tags.

The Twitter card validator is similar to Facebook’s sharing debugger, but it works from Twitter’s viewpoint. It doesn’t include as many details though.

And the social analytics tools Analisa and Social Blade will help you see how much engagement different types of content are getting on various social media platforms.