facebook share button

Hello
I need to add a facebook share button in a site.

Firstly is there a special plugin for Flexicontent or can we get any Joomla plugin ?

I have done a test with buildweb.eu share button.
It seems to work but I have some problems :

In some articles I get the good image but not the good description text. (I get the admin page description text and the the description content of the article)

In some articles I get the good description text but the image is not good : I get a choice of images from other article (sometime with the imege of the article but not always)

some examples :

good image but bad text : www.bibliactiv.com/index.php/fr/livres-e...es-enfants-pas-sages

bad image but godd text : www.bibliactiv.com/index.php/fr/livres-e...-le-serment-des-cinq

mainly the bad images are always the same.


bad image with image of the article and good text :
www.bibliactiv.com/index.php/fr/videos/f...tem/56-les-parisiens

How can I solve the problem

thank you for help
best regards
Michel

FLEXIcontent fields:
description, image, text, textarea

have parameters for suggesting
title/description/image to be used to facebook,

have enabled/tried them

also most joomla plugins will try to guess title/description/image to be suggested to facebook if there is such suggestion already inside the HTML (e.g. via above parameters), do a view page sourse and search for "ogp" and make sure that the parameters that you enabled in flexicontent fields work

Regards

Presently the plugins seems to work good. I think there something not normal inside my articles, as when the images are not godde for an article there are always the same one which appears before the good image.

I'm searching where is the problem.

I hae seen an external problem when duplicating an article. I open another post for this specific case

best regards
Michel