diff --git a/accessible/atk/nsMaiInterfaceDocument.cpp b/accessible/atk/nsMaiInterfaceDocument.cpp
index 6ce1e8ff4cca..7f4d3e1ff055 100644
--- a/accessible/atk/nsMaiInterfaceDocument.cpp
+++ b/accessible/atk/nsMaiInterfaceDocument.cpp
@@ -10,6 +10,7 @@
 #include "AccessibleWrap.h"
 #include "DocAccessible.h"
 #include "nsMai.h"
+#include "ProxyAccessible.h"
 #include "mozilla/Likely.h"
 
 using namespace mozilla::a11y;
@@ -46,12 +47,14 @@ documentInterfaceInitCB(AtkDocumentIface *aIface)
 const gchar *
 getDocumentLocaleCB(AtkDocument *aDocument)
 {
-  AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
-  if (!accWrap)
-    return nullptr;
-
   nsAutoString locale;
-  accWrap->Language(locale);
+  AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
+  if (accWrap) {
+    accWrap->Language(locale);
+  } else if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aDocument))) {
+    proxy->Language(locale);
+  }
+
   return locale.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(locale);
 }
 
@@ -71,24 +74,30 @@ prependToList(GSList *aList, const char *const aName, const nsAutoString &aValue
 AtkAttributeSet *
 getDocumentAttributesCB(AtkDocument *aDocument)
 {
+  nsAutoString url;
+  nsAutoString w3cDocType;
+  nsAutoString mimeType;
   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
-  if (!accWrap || !accWrap->IsDoc())
+  if (accWrap) {
+    if (!accWrap->IsDoc()) {
+      return nullptr;
+    }
+
+    DocAccessible* document = accWrap->AsDoc();
+    document->URL(url);
+    document->DocType(w3cDocType);
+    document->MimeType(mimeType);
+  } else if (ProxyAccessible* proxy = GetProxy(ATK_OBJECT(aDocument))) {
+    proxy->URLDocTypeMimeType(url, w3cDocType, mimeType);
+  } else {
     return nullptr;
+  }
 
   // according to atkobject.h, AtkAttributeSet is a GSList
   GSList* attributes = nullptr;
-  DocAccessible* document = accWrap->AsDoc();
-  nsAutoString aURL;
-  document->URL(aURL);
-  attributes = prependToList(attributes, kDocUrlName, aURL);
-
-  nsAutoString aW3CDocType;
-  document->DocType(aW3CDocType);
-  attributes = prependToList(attributes, kDocTypeName, aW3CDocType);
-
-  nsAutoString aMimeType;
-  document->MimeType(aMimeType);
-  attributes = prependToList(attributes, kMimeTypeName, aMimeType);
+  attributes = prependToList(attributes, kDocUrlName, url);
+  attributes = prependToList(attributes, kDocTypeName, w3cDocType);
+  attributes = prependToList(attributes, kMimeTypeName, mimeType);
 
   return attributes;
 }
@@ -97,20 +106,44 @@ const gchar *
 getDocumentAttributeValueCB(AtkDocument *aDocument,
                             const gchar *aAttrName)
 {
+  ProxyAccessible* proxy = nullptr;
+  DocAccessible* document = nullptr;
   AccessibleWrap* accWrap = GetAccessibleWrap(ATK_OBJECT(aDocument));
-  if (!accWrap || !accWrap->IsDoc())
-    return nullptr;
+  if (accWrap) {
+    if (!accWrap->IsDoc()) {
+      return nullptr;
+    }
+
+    document = accWrap->AsDoc();
+  } else {
+    proxy = GetProxy(ATK_OBJECT(aDocument));
+    if (!proxy) {
+      return nullptr;
+    }
+  }
 
-  DocAccessible* document = accWrap->AsDoc();
   nsAutoString attrValue;
-  if (!strcasecmp(aAttrName, kDocTypeName))
-    document->DocType(attrValue);
-  else if (!strcasecmp(aAttrName, kDocUrlName))
-    document->URL(attrValue);
-  else if (!strcasecmp(aAttrName, kMimeTypeName))
-    document->MimeType(attrValue);
-  else
+  if (!strcasecmp(aAttrName, kDocTypeName)) {
+    if (document) {
+      document->DocType(attrValue);
+    } else {
+      proxy->DocType(attrValue);
+    }
+  } else if (!strcasecmp(aAttrName, kDocUrlName)) {
+    if (document) {
+      document->URL(attrValue);
+    } else {
+      proxy->URL(attrValue);
+    }
+  } else if (!strcasecmp(aAttrName, kMimeTypeName)) {
+    if (document) {
+      document->MimeType(attrValue);
+    } else {
+      proxy->MimeType(attrValue);
+    }
+  } else {
     return nullptr;
+  }
 
   return attrValue.IsEmpty() ? nullptr : AccessibleWrap::ReturnString(attrValue);
 }
diff --git a/accessible/ipc/DocAccessibleChild.cpp b/accessible/ipc/DocAccessibleChild.cpp
index b25ff6af37ea..61c76d8555cc 100644
--- a/accessible/ipc/DocAccessibleChild.cpp
+++ b/accessible/ipc/DocAccessibleChild.cpp
@@ -1631,5 +1631,70 @@ DocAccessibleChild::RecvBounds(const uint64_t& aID,
   return false;
 }
 
+bool
+DocAccessibleChild::RecvLanguage(const uint64_t& aID,
+                                 nsString* aLocale)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (acc) {
+    acc->Language(*aLocale);
+  }
+
+  return true;
+}
+
+bool
+DocAccessibleChild::RecvDocType(const uint64_t& aID,
+                                nsString* aType)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (acc && acc->IsDoc()) {
+    acc->AsDoc()->DocType(*aType);
+  }
+
+  return true;
+}
+
+bool
+DocAccessibleChild::RecvURL(const uint64_t& aID,
+                            nsString* aURL)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (acc && acc->IsDoc()) {
+    acc->AsDoc()->URL(*aURL);
+  }
+
+  return true;
+}
+
+bool
+DocAccessibleChild::RecvMimeType(const uint64_t& aID,
+                                 nsString* aMime)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (acc && acc->IsDoc()) {
+    acc->AsDoc()->MimeType(*aMime);
+  }
+
+  return true;
+}
+
+bool
+DocAccessibleChild::RecvURLDocTypeMimeType(const uint64_t& aID,
+                                           nsString* aURL,
+                                           nsString* aDocType,
+                                           nsString* aMimeType)
+{
+  Accessible* acc = IdToAccessible(aID);
+  if (acc && acc->IsDoc()) {
+    DocAccessible* doc = acc->AsDoc();
+    doc->URL(*aURL);
+    doc->DocType(*aDocType);
+    doc->MimeType(*aMimeType);
+  }
+
+  return true;
+}
+
 }
 }
diff --git a/accessible/ipc/DocAccessibleChild.h b/accessible/ipc/DocAccessibleChild.h
index 19ddb6fbb927..41123f2c39f4 100644
--- a/accessible/ipc/DocAccessibleChild.h
+++ b/accessible/ipc/DocAccessibleChild.h
@@ -401,6 +401,15 @@ public:
                                 bool* aOk) override;
 
   virtual bool RecvBounds(const uint64_t& aID, nsIntRect* aRect) override;
+
+  virtual bool RecvLanguage(const uint64_t& aID, nsString* aLocale) override;
+  virtual bool RecvDocType(const uint64_t& aID, nsString* aType) override;
+  virtual bool RecvURL(const uint64_t& aID, nsString* aURL) override;
+  virtual bool RecvMimeType(const uint64_t& aID, nsString* aMime) override;
+  virtual bool RecvURLDocTypeMimeType(const uint64_t& aID,
+                                      nsString* aURL,
+                                      nsString* aDocType,
+                                      nsString* aMimeType) override;
 private:
 
   Accessible* IdToAccessible(const uint64_t& aID) const;
diff --git a/accessible/ipc/PDocAccessible.ipdl b/accessible/ipc/PDocAccessible.ipdl
index 786a2a60302b..3d9fa3a63053 100644
--- a/accessible/ipc/PDocAccessible.ipdl
+++ b/accessible/ipc/PDocAccessible.ipdl
@@ -209,6 +209,12 @@ child:
   prio(high) sync ChildAtPoint(uint64_t aID, int32_t aX, int32_t aY, uint32_t aWhich)
     returns(uint64_t aChild, bool aOk);
   prio(high) sync Bounds(uint64_t aID) returns(nsIntRect aRect);
+
+  prio(high) sync Language(uint64_t aID) returns(nsString aLocale);
+  prio(high) sync DocType(uint64_t aID) returns(nsString aType);
+  prio(high) sync URL(uint64_t aID) returns(nsString aURL);
+  prio(high) sync MimeType(uint64_t aID) returns(nsString aMime);
+  prio(high) sync URLDocTypeMimeType(uint64_t aID) returns(nsString aURL, nsString aDocType, nsString aMimeType);
 };
 
 }
diff --git a/accessible/ipc/ProxyAccessible.cpp b/accessible/ipc/ProxyAccessible.cpp
index 03df82cfa7f1..f2bf27df2857 100644
--- a/accessible/ipc/ProxyAccessible.cpp
+++ b/accessible/ipc/ProxyAccessible.cpp
@@ -911,5 +911,36 @@ ProxyAccessible::Bounds()
   return rect;
 }
 
+void
+ProxyAccessible::Language(nsString& aLocale)
+{
+  unused << mDoc->SendLanguage(mID, &aLocale);
+}
+
+void
+ProxyAccessible::DocType(nsString& aType)
+{
+  unused << mDoc->SendDocType(mID, &aType);
+}
+
+void
+ProxyAccessible::URL(nsString& aURL)
+{
+  unused << mDoc->SendURL(mID, &aURL);
+}
+
+void
+ProxyAccessible::MimeType(nsString aMime)
+{
+  unused << mDoc->SendMimeType(mID, &aMime);
+}
+
+void
+ProxyAccessible::URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
+                                    nsString& aMimeType)
+{
+  unused << mDoc->SendURLDocTypeMimeType(mID, &aURL, &aDocType, &aMimeType);
+}
+
 }
 }
diff --git a/accessible/ipc/ProxyAccessible.h b/accessible/ipc/ProxyAccessible.h
index efe422aaae80..164a301c34a7 100644
--- a/accessible/ipc/ProxyAccessible.h
+++ b/accessible/ipc/ProxyAccessible.h
@@ -276,6 +276,13 @@ public:
                                 Accessible::EWhichChildAtPoint aWhichChild);
   nsIntRect Bounds();
 
+  void Language(nsString& aLocale);
+  void DocType(nsString& aType);
+  void URL(nsString& aURL);
+  void MimeType(nsString aMime);
+  void URLDocTypeMimeType(nsString& aURL, nsString& aDocType,
+                          nsString& aMimeType);
+
   /**
    * Allow the platform to store a pointers worth of data on us.
    */