web crawler - Best way to choose an image from HTML to use as a thumbnail/preview of the page -

September 15, 2014

Believing that there is no og: image or link rel img_source, any real world experience or better Advice is to choose an image that best selects a web page -read technologies?

Update : All the answers are good, so they picked up all of them and chose one, though it seems that there is no great way to do this. I would experiment with a screenshot that wants a low-resolution client. thanks all!

PS : I think that in a few pages OG looks: image or link rel img_source anyway.

A notebook laptop will take a screenshot of the website in its smallest possible format, Or even a mobile (but not a mobile site version), would be a non-random approach.
The best web designers will try to ensure that users can see what is happening immediately on page loading and the most important and relevant information is called 'above the fold'.

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