THE PROBLEM:
I am trying, without much success, to implement open graph image on site: http://www.guarenty-group.com/cz/
The homepage is completeply bypassing the og:image tag, where internal pages are reading all images from the site and place og:image as the last option.
Other social networks are working fine on both internal pages and homepage.
THE CONFIGURATION:
I have no share buttons or alike, all I want is to be able to share the link via my profile.
The image is well over 300x300px: http://guarenty-group.com/img/gg_seal.png
Here is how my head tag looks like:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>Guarenty Group : Pojištení pro nájemce a pronajímatelé</title>
<meta name="keywords" content="" />
<meta name="description" content="Guarenty Group pojištuje príjem z nájmu pronajímatelum, kauci nájemcum - aby nemuseli platit velkou cástku v hotovostí predem - a dále nájemcum pojištuje príjmy, aby meli na nájem pri nemoci, úrazu ci nezamestnání." />
<meta name="image_src" content="http://guarenty-group.com/img/gg_seal.png" />
<meta name="image_url" content="http://guarenty-group.com/img/gg_seal.png" />
<meta property="og:title" content="Pojištení pro nájemce a pronajímatelé" />
<meta property="og:url" content="http://guarenty-group.com/cz/" />
<meta property="og:image" content="http://guarenty-group.com/img/gg_seal.png" />
<meta property="og:description" content="Guarenty Group pojištuje príjem z nájmu pronajímatelum, kauci nájemcum - aby nemuseli platit velkou cástku v hotovostí predem - a dále nájemcum pojištuje príjmy, aby meli na nájem pri nemoci, úrazu ci nezamestnání [...]" />
...
</head>
THE TESTING RESULTS:
In order to trick the cache i have tested the site with http://www.guarenty-group.com/cz/?try=N, where I have changed the N every time. The strange thing is that images found for different value of N is different. Sometimes there is no image, sometimes there is 1, 2 or 3 images, but each time there is a different set of images.
But, in any case I could not find the image specified in the og:graph!
MY QUESTIONS:
https://developer.linkedin.com/documents/setting-display-tags-shares is saying one thing, and the personnel on the support forum is saying "over 300" Does anyone know What is the official minimum dimension of the image (both w and h)?
Can an image be too large?
Should I use the xmlns, should I not use xmlns or it doesn't matter?
What are the maximum (and minimum) lengths for og:title and og:description tags?
Any other suggestion is of course welcomed :)
Thanks in advance, cheers~
