Description should be between 2 and 4 sentences. Image should be at least 600x315 but larger than 1200x630 is recommended. URL should be without session variables, user identifying parameters, or counters.
Essential tags below. If some are not present Twitter can use Facebook’s og tags instead. So title, description and image can be omitted if the equivalent og tags are present.Title is max 70 characters. Description is max 200 characters. Image should reflect the content of the page and not be generic like an author image or logo.