on my site i am refering pdf file with href text. So when i click on the text, browser is opening the pdf file. Everything works perfect. But i would like to change the linking text to an image link. I mean is there any way of coding that will tell the browser to use the first page of my pdf file as the img. I dont really know how to better explain this. i mean just like in a video that are reachable via a thubnail image, this image is taken ( i presume randomly) within the video.

thank you all