Image preview not always working

[alscaldas]

Hello,

Although I've been using Linkding as my primary bookmark tool for almost 2 years, it's been a couple of months since I last updated it (I installed it via Docker, btw).

I noticed it has fantastic new options, and I particularly enjoyed the "image preview".

But the thing is it doesn't seem to be working very well for me. I mean, it works nicely in some urls, but not on others. On IMDB, for example, it only shows the generic IMDB logo. Reddit urls don't show anything... no matter if it's a profile or a subreddit link. On the other hand, links for some Aliexpress dealings for example work perfectly, showing the image of the product as an image preview.

Am I missing something? Maybe some further configuration I'm supposed to do? I read the README but saw no indication...

Again, loving the new features! :)