Michael – I would check with the different networks – it looks like for Facebook you can find it here – https://developers.facebook.com/docs/sharing/best-practices

“Use images that are at least 1200 × 630 pixels for the best display on high resolution devices. At the minimum, you should use images that are 600 × 315 pixels to display link page posts with larger images. Images can be up to 8MB in size.”

Actually I also found this which should help across the board!
https://blog.hubspot.com/marketing/ultimate-guide-social-media-image-dimensions-infographic

Hi – I am trying to properly optimize my social media share image, which is cropped as it reproduces in Facebook and Twitter. What are the proper dimensions to make sure my image is displayed in full? (I also notice that I can’t really alter that in the settings > social media tabs, but it would have to originate with the jpeg I upload.) Thanks in advance for your assistance.

Jordan – sometimes the images get stuck in the Facebook cache – you can put the link through the Facebook Debugger and it should help!

https://developers.facebook.com/tools/debug/

I want to change the social media image on a blog post. But every time I upload a new image the old image still appears when I share on Facebook. Is there a way to fix this without rebuilding the entire post?

Hi Bob – Every page on your website has social media settings. These settings allow you to prompt supporters to share a page on Twitter and Facebook and attract potential allies to your site: http://nationbuilder.com/sharing_your_site_on_social_media

It looks like Facebook suggests the debugger as well for the fb:admin tag:
http://stackoverflow.com/questions/7567271/can-anyone-tell-me-what-fbadmins-could-not-be-parsed-as-type-fbid-means

If you are looking to tag pages themselves you can learn all about tags and creating tag libraries here: http://nationbuilder.com/creating_a_tag_library

Here’s an overall of how tags work: http://nationbuilder.com/how_to_tagging

hey kevin … so the fact that you can’t delete an image is kind of a bug you should fix, because really the only option to eliminate the is to rebuild the post entirely … more importantly though, can you point me to some tutorials for setting up social sharing in a new nation? not just the settings>social, which is what mucked me up in the first place, but stuff about fb_admins tags and the like … help ? thanks !

Hey Dean, there actually isn’t currently a way to remove the image from your social share. I’d advise just changing back to your site logo, or making it a blank image.

How do I remove an image set in the page settings > social media? I don’t want to xchange it, I want to remove it.