diff --git a/doc/builders.rst b/doc/builders.rst
index 4fbd5bae63..93e01e4b7e 100644
--- a/doc/builders.rst
+++ b/doc/builders.rst
@@ -23,6 +23,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. class:: DirectoryHTMLBuilder
@@ -36,6 +38,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 0.6
@@ -48,6 +52,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.0
@@ -61,6 +67,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. module:: sphinx.builders.qthelp
@@ -72,6 +80,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. _Qt help: http://qt-project.org/doc/qt-4.8/qthelp-framework.html
@@ -96,6 +106,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.3
@@ -109,6 +121,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. module:: sphinx.builders.epub
@@ -122,6 +136,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. module:: sphinx.builders.latex
@@ -145,6 +161,8 @@ The builder's "name" must be given to the **-b** command-line option of
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 Note that a direct PDF builder using ReportLab is available in `rst2pdf
@@ -162,6 +180,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 0.4
@@ -175,6 +195,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.0
@@ -196,6 +218,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.1
@@ -261,6 +285,8 @@ for details.
 
       The old name ``web`` still works as well.
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    The file suffix is ``.fpickle``.  The global context is called
@@ -276,6 +302,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    The file suffix is ``.fjson``.  The global context is called
@@ -293,6 +321,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.1
@@ -307,6 +337,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. module:: sphinx.builders.linkcheck
@@ -318,6 +350,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
 .. module:: sphinx.builders.xml
@@ -329,6 +363,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.2
@@ -343,6 +379,8 @@ for details.
 
    .. autoattribute:: name
 
+   .. autoattribute:: format
+
    .. autoattribute:: supported_image_types
 
    .. versionadded:: 1.2