title: Method to insert hyperlinks in description field of Icalendar (ics) file
body: <p>I used to insert hyperlinks in ics file using x-alt-desc field which allowed html tags. Issue was that this field only worked woth MS Outlook and I had to use alternate description field which must contain plain text format (\n could be added for new line).</p>
  
  <p>I am now able to get following output now</p>
  
  <p><strong>Outlook</strong>:
  <a href="https://i.stack.imgur.com/ktKfB.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/ktKfB.jpg" alt="enter image description here"></a></p>
  
  <p><strong>Google Calendar</strong>
  <a href="https://i.stack.imgur.com/0r20f.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0r20f.png" alt="enter image description here"></a></p>
  
  <p><strong>Mozilla Thunderbird</strong>
  <a href="https://i.stack.imgur.com/HtFMo.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/HtFMo.png" alt="enter image description here"></a></p>
  
  <p>Issue is links work best in outlook, still clickable/working in google calendar and plain text in thunderbird. Is there any way I can making them clickable in thunderbird like google calendar??</p>