Create RAW GIF handler page for website

I have a viral image site ([login to view URL]) where people can view funny gifs. A lot of people on reddit are sharing the raw .gif files however, rather than the page with .gif embedded. This is fine but I'd like to redirect all people viewing raw image .gifs to a handler page called [login to view URL] (located in root directory). This handler page will look exactly the same - just with a share link and button to check out the rest of the site. Example of raw image location: [login to view URL] Share page location: [login to view URL] At this stage I have the redirection working properly. I can redirect all raw image gifs to the handler page. HOWEVER I can't get my handler page to collect the raw image file from the referring URL. So essentially if a user visits: [login to view URL] They should be redirected to [login to view URL] And on this shareraw page you'll see exactly the same thing as if you were looking at the raw .gif resource. Just with an added 2 buttons. On this [login to view URL] page I tried using the $_SERVER['HTTP_REFERER'] variable to collect the previous referer (which would be [login to view URL]). I would then be able to put that into a <img> element on the shareraw page, thus achieving my goal. UNFORTUNATELY the $_SERVER['HTTP_REFERER'] ONLY works if there's a header. So since the raw image .gif didn't have one, $_SERVER['HTPP_REFERER'] is NULL. With that all being said, I now need an alternate solution. If you think you can figure this out please bid. Note however I will only pay if the requirements are met. Which again are: -redirect all .raw gif address requests to a handler page (already done) -handler page needs to populate an <img> element with the referring .gif -alternate solutions are accepted as long as all raw .gif address requests go to a handler page with <img> element populated with that gif. There are multiple solutions here. Another solution may be to create .php files for each raw image gif on the server, and then just redirect the .gif to .php. Would need a program to do this because there are 17k gifs on the site. On each php file you'd just need to get the url address via $_SERVER then just delete the last 3 characters of the url and replace with a .gif - then that could populate the <img> element. -just an example of a possible alternate solution Additional points: -Site is being hosted on wordpress -Server configuration is nginx (I can change back to apache if I must) -test address is [login to view URL]