Metadata tags?

Is there a way to add metadata tags?

Use case - I’d like my users to be able to post our web app’s general URL (as well as ideally their own individual profile deep links) onto LinkedIn. Currently the image, title, etc is not optimized for LinkedIn post, and LinkedIn only caters for metadata configuration to adjust.

General tool: https://www.linkedin.com/post-inspector/

My example: https://www.linkedin.com/post-inspector/inspect/app.coffeechat.co

I don’t think it’s possible as of now.