URL link parser before posting to a group?

Question

Classmates

Good afternoon.
The site has organized automatic placement of the announcement in the OK group when a new post is published. Periodically, there is a problem that the article thumbnail is not processed by the OK parser and, as a result, does not contain a picture.
In the case of FB, we first send the link from the announcement to the debugger ( https://developers.facebook.com/tools/debug/ ) and only then post it to the FB feed. By the time the announcement is posted, the debugger has time to process the link and the thumbnail is built correctly, with a picture.
How can you do the same with OK, i.e. before publishing in the group feed, send a link somewhere so that the OK parser processes it and builds a thumbnail, which will then be used when displayed in the feed.

Answer 1

There are two methods that can help you:
https://apiok.ru/dev/methods/rest/share/share.fetchLink
https://apiok.ru/dev/methods/rest/share/share.fetc...