--- a/browser/base/content/urlbarBindings.xml
+++ b/browser/base/content/urlbarBindings.xml
@@ -88,26 +88,45 @@ file, You can obtain one at http://mozil
         this.inputField.addEventListener("mouseout", this);
         this.inputField.addEventListener("overflow", this);
         this.inputField.addEventListener("underflow", this);
 
         var textBox = document.getAnonymousElementByAttribute(this,
                                                 "anonid", "textbox-input-box");
         var cxmenu = document.getAnonymousElementByAttribute(textBox,
                                             "anonid", "input-box-contextmenu");
-        var pasteAndGo;
-        cxmenu.addEventListener("popupshowing", function() {
-          if (!pasteAndGo)
-            return;
-          var controller = document.commandDispatcher.getControllerForCommand("cmd_paste");
-          var enabled = controller.isCommandEnabled("cmd_paste");
-          if (enabled)
-            pasteAndGo.removeAttribute("disabled");
-          else
-            pasteAndGo.setAttribute("disabled", "true");
+        let pasteAndGo;
+        let copyRaw;
+        cxmenu.addEventListener("popupshowing", () => {
+          if (pasteAndGo) {
+            let controller = document.commandDispatcher.getControllerForCommand("cmd_paste");
+            let enabled = controller.isCommandEnabled("cmd_paste");
+            if (enabled)
+              pasteAndGo.removeAttribute("disabled");
+            else
+              pasteAndGo.setAttribute("disabled", "true");
+          }
+          if (copyRaw) {
+            // There are 4 cases where there's no need to display the "copy raw" menu item:
+            // 1. If the text in the URL bar is different from the loaded page
+            //    (for example, the user has edited the text after page load);
+            // 2. If the text in the URL bar URL isn't fully selected;
+            // 3. If the scheme of the URL is data: or javascript:;
+            // 4. If the URL is already raw(i.e. a URL which hasn't been decoded to Unicode).
+            if (this.getAttribute("pageproxystate") !== "valid" ||
+                this.selectionStart !== 0 ||
+                this.selectionEnd !== this.inputField.value.length ||
+                gBrowser.currentURI.schemeIs("javascript") ||
+                gBrowser.currentURI.schemeIs("data") ||
+                gBrowser.currentURI.asciiSpec.includes(this.inputField.value)) {
+              copyRaw.setAttribute("hidden", "true");
+            } else {
+              copyRaw.removeAttribute("hidden");
+            }
+          }
         });
 
         var insertLocation = cxmenu.firstChild;
         while (insertLocation.nextSibling &&
                insertLocation.getAttribute("cmd") != "cmd_paste")
           insertLocation = insertLocation.nextSibling;
         if (insertLocation) {
           pasteAndGo = document.createElement("menuitem");
@@ -115,16 +134,34 @@ file, You can obtain one at http://mozil
                                    GetStringFromName("pasteAndGo.label");
           pasteAndGo.setAttribute("label", label);
           pasteAndGo.setAttribute("anonid", "paste-and-go");
           pasteAndGo.setAttribute("oncommand",
               "gURLBar.select(); goDoCommand('cmd_paste'); gURLBar.handleCommand();");
           cxmenu.insertBefore(pasteAndGo, insertLocation.nextSibling);
         }
 
+        insertLocation = cxmenu.firstChild;
+        while (insertLocation.nextSibling &&
+               insertLocation.getAttribute("cmd") != "cmd_copy")
+          insertLocation = insertLocation.nextSibling;
+        if (insertLocation) {
+          copyRaw = document.createElement("menuitem");
+          let label = Services.strings.createBundle("chrome://browser/locale/browser.properties").
+                                   GetStringFromName("copyRaw.label");
+          copyRaw.setAttribute("label", label);
+          copyRaw.setAttribute("anonid", "copy-raw");
+          copyRaw.setAttribute("accesskey", "r");
+          copyRaw.setAttribute("oncommand",
+              `Cc["@mozilla.org/widget/clipboardhelper;1"]
+                 .getService(Ci.nsIClipboardHelper)
+                 .copyString(gBrowser.currentURI.asciiSpec);`);
+          cxmenu.insertBefore(copyRaw, insertLocation.nextSibling);
+        }
+
         this.popup.addEventListener("popupshowing", () => {
           this._enableOrDisableOneOffSearches();
         }, {capture: true, once: true});
 
         // history dropmarker open state
         this.popup.addEventListener("popupshowing", () => {
           this.setAttribute("open", "true");
         });

--- a/browser/locales/en-US/chrome/browser/browser.properties
+++ b/browser/locales/en-US/chrome/browser/browser.properties
@@ -397,16 +397,17 @@ menuUndoCloseWindowLabel=#1 (and #2 othe
 menuUndoCloseWindowSingleTabLabel=#1
 
 # Unified Back-/Forward Popup
 tabHistory.current=Stay on this page
 tabHistory.goBack=Go back to this page
 tabHistory.goForward=Go forward to this page
 
 # URL Bar
+copyRaw.label=Copy Raw
 pasteAndGo.label=Paste & Go
 # LOCALIZATION NOTE (reloadButton.tooltip):
 # %S is the keyboard shortcut for reloading the current page
 reloadButton.tooltip=Reload current page (%S)
 # LOCALIZATION NOTE (stopButton.tooltip):
 # %S is the keyboard shortcut for stopping loading the page
 stopButton.tooltip=Stop loading this page (%S)
 # LOCALIZATION NOTE (urlbar-zoom-button.tooltip):