diff --git a/doc/extdev/appapi.rst b/doc/extdev/appapi.rst
index e19e6f03c..1df85907a 100644
--- a/doc/extdev/appapi.rst
+++ b/doc/extdev/appapi.rst
@@ -288,6 +288,11 @@ package.
    Add the standard docutils :class:`Transform` subclass *transform* to the list
    of transforms that are applied after Sphinx parses a reST document.
 
+.. method:: Sphinx.add_post_transform(transform)
+
+   Add the standard docutils :class:`Transform` subclass *transform* to the list
+   of transforms that are applied before Sphinx writes a document.
+
 .. method:: Sphinx.add_javascript(filename)
 
    Add *filename* to the list of JavaScript files that the default HTML template
diff --git a/sphinx/application.py b/sphinx/application.py
index bb1a9fc39..97339c62b 100644
--- a/sphinx/application.py
+++ b/sphinx/application.py
@@ -144,6 +144,7 @@ class Sphinx(object):
         self.builder = None                     # type: Builder
         self.env = None                         # type: BuildEnvironment
         self.enumerable_nodes = {}              # type: Dict[nodes.Node, Tuple[unicode, Callable]]  # NOQA
+        self.post_transforms = []               # type: List[Transform]
 
         self.srcdir = srcdir
         self.confdir = confdir
@@ -785,10 +786,15 @@ class Sphinx(object):
         StandardDomain.roles[rolename] = XRefRole(innernodeclass=ref_nodeclass)
 
     def add_transform(self, transform):
-        # type: (Transform) -> None
+        # type: (Type[Transform]) -> None
         logger.debug('[app] adding transform: %r', transform)
         SphinxStandaloneReader.transforms.append(transform)
 
+    def add_post_transform(self, transform):
+        # type: (Type[Transform]) -> None
+        logger.debug('[app] adding post transform: %r', transform)
+        self.post_transforms.append(transform)
+
     def add_javascript(self, filename):
         # type: (unicode) -> None
         logger.debug('[app] adding javascript: %r', filename)