Changing Facebook description when shared

As I know you can’t have empty description, alternatively you could exclude description on Facebook when you are sharing url (by X button on hover).

Also, it’s very bad for SEO and Accessibility that you have no text on site. For search engines and text readers your content just don’t exists.
You should consider adding short note or at least alt attribute for images and sound.

You could change description for Facebook, Google+ and Twitter with Yoast SEO plugin (in post’s edit you will have new box with 3 tabs – read more on official website).

Thank you!

I’m using both title attribute for the hyperlinks and alt attribute for the images, but I’ll look into further optimizing the content for SEO and Accessibility purposes.

If I can’t leave the description empty (however, like you said, this is possible manually by just clicking the description box and emptying it when sharing on Facebook), would it be possible to have a standard text for every post? Maybe simply describing the blog or whatever. In that case I would get:

Unique post title from post being shared
Unique image from post being shared
Description of the site (“This is a blog with sound and images”).

Sorry for being slow, but how would I do this with the Yoast plugin? Or is there an instruction for this on their official website?

Okay! I’ve managed to change the description with the Yoast plugin. It didn’t seem to work at first, but then I realized that the changes applies only to new posts. Does anyone have any clue on how to apply this to posts created before the change?

You could set default descriptions and title in Yoast SEO -> Social, however if social/search engine accept it, it depends from it (for example Google prefers get description automatically from your website instead read meta tag).

Thank you! Yeah, I got that working through the Yoast SEO -> Social tab. But now the problem is that I only can get this working for posts that are created after these changes. Is there any way to apply the OG settings for older posts?

Are you sure? I can’t check it at the moment, but I think defaults should be set for older posts with no specific attributes set.

Please check your posts’ source (Ctrl+U when reading post on website) for meta property="og: by Ctrl+F.
If you are testing og tags with Facebook it may doesn’t showed you right tags if you linked that url before so Facebook already cached box with data in your browser (then try close each part o box and after some refresh it should be downloaded again).

If it seems like problem with og tags in source, then you should ask on Yoast SEO’s forum are you can apply it to old posts. I am not using defaults descriptions or titles as I have always content in posts and pages, so I can’t tell you more.

Ah, sorry. The problem is only appearing in posts that’s probably in the browser’s cache. So it should not happen for any of my visitors.

Thank you for all your help!