title: How to successfully implement og:image for the LinkedIn
body: <p><strong>THE PROBLEM:</strong></p>
  
  <ul>
  <li>I am trying, without much success, to implement open graph image on site: <a href="http://www.guarenty-group.com/cz/" rel="noreferrer">http://www.guarenty-group.com/cz/</a></li>
  <li>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.</li>
  <li>Other social networks are working fine on both internal pages and homepage.</li>
  </ul>
  
  <hr>
  
  <p><strong>THE CONFIGURATION:</strong></p>
  
  <ul>
  <li>I have no share buttons or alike, all I want is to be able to share the link via my profile.</li>
  <li>The image is well over 300x300px: <a href="http://guarenty-group.com/img/gg_seal.png" rel="noreferrer">http://guarenty-group.com/img/gg_seal.png</a></li>
  <li><p>Here is how my head tag looks like:</p>
  
  <pre><code>&lt;!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"&gt;
  &lt;html xmlns="http://www.w3.org/1999/xhtml"&gt;
  &lt;head&gt;
          &lt;meta http-equiv="Content-Type" content="text/html; charset=utf-8" /&gt;
          &lt;title&gt;Guarenty Group : Pojištění pro nájemce a pronajímatelé&lt;/title&gt;
  
          &lt;meta name="keywords" content="" /&gt;
          &lt;meta name="description" content="Guarenty Group pojišťuje příjem z nájmu pronajímatelům, kauci nájemcům - aby nemuseli platit velkou částku v hotovostí předem - a dále nájemcům pojišťuje příjmy, aby měli na nájem při nemoci, úrazu či nezaměstnání." /&gt;
          &lt;meta name="image_src" content="http://guarenty-group.com/img/gg_seal.png" /&gt;
          &lt;meta name="image_url" content="http://guarenty-group.com/img/gg_seal.png" /&gt;
  
          &lt;meta property="og:title" content="Pojištění pro nájemce a pronajímatelé" /&gt;
          &lt;meta property="og:url" content="http://guarenty-group.com/cz/" /&gt;
          &lt;meta property="og:image" content="http://guarenty-group.com/img/gg_seal.png" /&gt;
          &lt;meta property="og:description" content="Guarenty Group pojišťuje příjem z nájmu pronajímatelům, kauci nájemcům - aby nemuseli platit velkou částku v hotovostí předem - a dále nájemcům pojišťuje příjmy, aby měli na nájem při nemoci, úrazu či nezaměstnání [...]" /&gt;
          ...
  &lt;/head&gt;
  </code></pre></li>
  </ul>
  
  <hr>
  
  <p><strong>THE TESTING RESULTS:</strong></p>
  
  <p>In order to trick the cache i have tested the site with <a href="http://www.guarenty-group.com/cz/?try=N" rel="noreferrer">http://www.guarenty-group.com/cz/?try=N</a>, 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!</p>
  
  <hr>
  
  <p><strong>MY QUESTIONS:</strong></p>
  
  <ol>
  <li><a href="https://developer.linkedin.com/documents/setting-display-tags-shares" rel="noreferrer">https://developer.linkedin.com/documents/setting-display-tags-shares</a> 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)?</li>
  <li>Can an image be too large?</li>
  <li>Should I use the xmlns, should I not use xmlns or it doesn't matter?</li>
  <li>What are the maximum (and minimum) lengths for og:title and og:description tags?</li>
  </ol>
  
  <p>Any other suggestion is of course welcomed :)</p>
  
  <p>Thanks in advance, cheers~</p>