I found what I was looking for.
I had everything configured in tn plugin settings expect thumbnails.
By looking at code examples online, I find one of the value of the parameter responsive of featured image.
I added
'post_thumb_op' => 'text_only'
and it worked!
It works!
Thanks a lot, Ajay!
The only problem it gave if someone else want to implement it: it does not work with “custom size”!
Regards!
Pierre Eustache C.
http://askeustache.com
I can achieve it by adding data-pin-nopin=”true” to my images! By example:
<img src="..." alt="..." data-pin-nopin="true" />
How can I do modifying the code! It seems that class filter function echo inside ” ” which will not fit. I think it may work with post_thumbnail filter.