title: Show geotiff format images in openlayers map
body: <p>I am new to Openlayers, and I have seen almost all examples and documentation ....
  I have several .tiff format images, some have the same coordinates. I wanted to show these images at their coordinates on the front-end using angular 8.
  I was just wondering how can I do it ? 
  Do I need to use a server for sharing geospatial data like mapserver or geoserver ?
  Or can I just transform my .tiff image to PNG and show it in its coordinates ?</p>
  
  <p>Can you tell me what is the best approach ? Is there any examples ?</p>