diff --git a/docs/source/_ext/__init__.py b/docs/source/_ext/__init__.py
new file mode 100644
index 00000000..e69de29b
diff --git a/docs/source/_ext/fetch_md.py b/docs/source/_ext/fetch_md.py
index bfc3da09..18773dd6 100644
--- a/docs/source/_ext/fetch_md.py
+++ b/docs/source/_ext/fetch_md.py
@@ -1,8 +1,7 @@
 import os
 from docutils.nodes import SparseNodeVisitor
 from docutils.parsers.rst import Directive
-from myst_parser.docutils_ import Parser
-from myst_parser.mdit_to_docutils.base import make_document
+from utils import md_to_docutils, get_link_key
 
 # Python2 compatibility
 try:
@@ -13,16 +12,8 @@ except NameError:
 
 class Relinker(SparseNodeVisitor):
 
-    @staticmethod
-    def get_link_key(node):
-        link_keys = ['uri', 'refuri', 'refname']
-        for key in link_keys:
-            if key in node.attributes.keys():
-                return key
-        return None
-
     def relink(self, node, base_dir):
-        key = Relinker.get_link_key(node)
+        key = get_link_key(node)
         if key is None:
             return
         link = node.attributes[key]
@@ -45,10 +36,8 @@ class FetchMd(Directive):
         result = []
         try:
             with open(path) as file:
-                parser = Parser()
                 text = file.read()
-                doc = make_document(parser_cls=Parser)
-                parser.parse(text, doc)
+                doc = md_to_docutils(text)
                 relinker = Relinker(doc)
                 doc.walk(relinker)
                 result.append(doc[0])
diff --git a/docs/source/_ext/meshroom_doc.py b/docs/source/_ext/meshroom_doc.py
index acde4aab..965824be 100644
--- a/docs/source/_ext/meshroom_doc.py
+++ b/docs/source/_ext/meshroom_doc.py
@@ -1,7 +1,6 @@
 from docutils import nodes
 from docutils.parsers.rst import Directive
-from myst_parser.docutils_ import Parser
-from myst_parser.mdit_to_docutils.base import make_document
+from utils import md_to_docutils
 
 import importlib
 from meshroom.core import desc
@@ -25,28 +24,23 @@ class MeshroomDoc(Directive):
         # Class inherits desc.Node
         if issubclass(node_class, desc.Node):
             node = node_class()
-            parser = Parser()
             # Category
-            doc = make_document(parser_cls=Parser)
-            parser.parse('**Category**: {}'.format(node.category), doc)
+            doc = md_to_docutils('**Category**: {}'.format(node.category))
             result.extend(doc.children)
             # Documentation
-            doc = make_document(parser_cls=Parser)
-            parser.parse(node.documentation, doc)
+            doc = md_to_docutils(node.documentation)
             result.extend(doc.children)
             # Inputs
             text_inputs = '**Inputs**: \n'
             for attr in node.inputs:
                 text_inputs += '- {} ({})\n'.format(attr._name, attr.__class__.__name__)
-            doc = make_document(parser_cls=Parser)
-            parser.parse(text_inputs, doc)
+            doc = md_to_docutils(text_inputs)
             result.extend(doc.children)
             # Outputs
             text_outputs = '**Outputs**: \n'
             for attr in node.outputs:
                 text_outputs += '- {} ({})\n'.format(attr._name, attr.__class__.__name__)
-            doc = make_document(parser_cls=Parser)
-            parser.parse(text_outputs, doc)
+            doc = md_to_docutils(text_outputs)
             result.extend(doc.children)
         return result
 
diff --git a/docs/source/_ext/utils.py b/docs/source/_ext/utils.py
new file mode 100644
index 00000000..729aa8a5
--- /dev/null
+++ b/docs/source/_ext/utils.py
@@ -0,0 +1,17 @@
+from myst_parser.docutils_ import Parser
+from myst_parser.mdit_to_docutils.base import make_document
+
+
+def md_to_docutils(text):
+    parser = Parser()
+    doc = make_document(parser_cls=Parser)
+    parser.parse(text, doc)
+    return doc
+
+
+def get_link_key(node):
+    link_keys = ['uri', 'refuri', 'refname']
+    for key in link_keys:
+        if key in node.attributes.keys():
+            return key
+    return None