How do I find out the URL of the page a document was downloaded from?

Question

I downloaded a PDF several months ago; I can see it in my downloads history. When I right click it there, I see the link to the PDF itself, but I need to know the actual page it came from.
I've checked my History, but cannot identify the page.
Is there a definitive way of determining the URL of the page that linked to the document?

Answer 1

Open the Download Manager window and select that file.
Copy and paste this code in the Code field in the Error Console and click the Evaluate button.
*Firefox/Tools > Web Development > Error Console
The code adds a tooltip to the area with the file type icon at the left hand side of each entry in the DM window and shows a tooltip when you hover that area.<br />
It only works for entries that are currently visible in the DM and not for new entries that are added by downloading files and only as long as the DM window is kept open, so you need to rerun the code in the Error Console to get a tooltip.
<pre><nowiki>const Cc=Components.classes, Ci=Components.interfaces;
var enumerator=Cc["@mozilla.org/appshell/window-mediator;1"].getService(Ci.nsIWindowMediator).getEnumerator(null);
while(enumerator.hasMoreElements()){var win=enumerator.getNext();
if(win.location=="chrome://mozapps/content/downloads/downloads.xul"){
var i,r,R,C='';
r=win.document.getElementById("downloadView").getElementsByTagName("richlistitem");
for(i=0;R=r[i];i++){
var fP=R.getAttribute("path");
var fU=R.getAttribute("uri");
var sT=parseInt(R.getAttribute("startTime"));
var eT=parseInt(R.getAttribute("endTime"));
var cB=parseInt(R.getAttribute("currBytes"));
var mB=parseInt(R.getAttribute("maxBytes"));
var rU=R.hasAttribute("referrer")?R.getAttribute("referrer"):"<no referrer>";
var sD=cB/(eT-sT);
var tT=[];
tT.push("FILE: "+fP);
tT.push("URI: "+fU);
tT.push("REF: "+rU);
tT.push("");
tT.push("Total Time: "+((eT-sT)/1E3)+" sec.");
tT.push("Curr Bytes: "+cB+" bytes"+((cB==mB)?" (OK)":"(part)"));
tT.push("Max Bytes: "+mB+" bytes");
tT.push("Download speed: "+sD.toFixed(3)+" KB/sec");
R.setAttribute("tooltiptext",tT.join("\n"));
if(R.getAttribute("selected")=="true"){C=tT;}
if(C)prompt(C.join("\n"),C);
</nowiki></pre>