I'm asking if it exists a drupal module that let you make a preview of a link like the Facebook do.
In another way a display format which it gives a preview.
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There is one more similar module called External Link Preview
This module allows users to preview all the external links that are added into any text area field by fetching their metatags - title, description and image.
You can also try the Opengraph Filter which sorts of acts like Facebook's link preview. I haven't tried on link fields but it does work on a text body. Pretty neat actually :)
WebSnapr Preview Bubble module display screenshot of target page in popup.