diff --git a/bw2io/strategies/json_ld_lcia.py b/bw2io/strategies/json_ld_lcia.py
index dcbe992..6708787 100644
--- a/bw2io/strategies/json_ld_lcia.py
+++ b/bw2io/strategies/json_ld_lcia.py
@@ -1,4 +1,74 @@
 def json_ld_lcia_add_method_metadata(data):
+    """
+    Add metadata of the Life Cycle Impact Assessment (LCIA) method to the corresponding impact categories.
+
+    Iterates over the LCIA methods and adds metadata from the method to each of its impact
+    categories. The metadata includes the method's name, description, version, and lastChange.
+
+    Parameters
+    ----------
+    data : dict
+        A dictionary containing LCIA methods and their impact categories.
+
+    Returns
+    -------
+    dict
+        A dictionary with the updated LCIA impact categories containing the parent method metadata.
+
+    Examples
+    --------
+     >>> data = {
+    ...     "lcia_methods": {
+    ...         "method_1": {
+    ...             "name": "LCIA Method 1",
+    ...             "description": "Sample LCIA Method 1",
+    ...             "version": "1.0",
+    ...             "lastChange": "2021-01-01",
+    ...             "impactCategories": [
+    ...                 {"@id": "category_1"},
+    ...                 {"@id": "category_2"},
+    ...             ],
+    ...         },
+    ...     },
+    ...     "lcia_categories": {
+    ...         "category_1": {},
+    ...         "category_2": {},
+    ...     },
+    ... }
+    >>> json_ld_lcia_add_method_metadata(data)
+    {
+        'lcia_methods': {
+            'method_1': {
+                'name': 'LCIA Method 1',
+                'description': 'Sample LCIA Method 1',
+                'version': '1.0',
+                'lastChange': '2021-01-01',
+                'impactCategories': [
+                    {'@id': 'category_1'},
+                    {'@id': 'category_2'},
+                ],
+            },
+        },
+        'lcia_categories': {
+            'category_1': {
+                'parent': {
+                    'name': 'LCIA Method 1',
+                    'description': 'Sample LCIA Method 1',
+                    'version': '1.0',
+                    'lastChange': '2021-01-01',
+                },
+            },
+            'category_2': {
+                'parent': {
+                    'name': 'LCIA Method 1',
+                    'description': 'Sample LCIA Method 1',
+                    'version': '1.0',
+                    'lastChange': '2021-01-01',
+                },
+            },
+        },
+    }
+    """
     for key, value in data["lcia_methods"].items():
         for category in value["impactCategories"]:
             obj = data["lcia_categories"][category["@id"]]
@@ -9,6 +79,52 @@ def json_ld_lcia_add_method_metadata(data):
 
 
 def json_ld_lcia_set_method_metadata(data):
+    """
+    Update the metadata of Life Cycle Impact Assessment (LCIA) methods in the given data.
+
+    Processes the metadata of the LCIA methods in the given data, removing unnecessary fields, 
+    renaming fields, setting units, and updating the name and description.
+
+    Parameters
+    ----------
+    data : list
+        A list of dictionaries representing LCIA methods with metadata.
+
+    Returns
+    -------
+    list
+        A list of dictionaries representing the updated LCIA methods with modified metadata.
+
+    Examples
+    --------
+    >>> data = [
+    ...     {
+    ...         "@context": "http://www.example.com",
+    ...         "@type": "LCIA",
+    ...         "referenceUnitName": "kg",
+    ...         "@id": "method_1",
+    ...         "name": "LCIA Method 1",
+    ...         "description": "Sample LCIA Method 1",
+    ...         "parent": {
+    ...             "name": "Parent Method",
+    ...             "description": "Sample parent method",
+    ...         },
+    ...     }
+    ... ]
+    >>> json_ld_lcia_set_method_metadata(data)
+    [
+        {
+            'unit': 'kg',
+            'id': 'method_1',
+            'name': ('Parent Method', 'LCIA Method 1'),
+            'description': 'Sample LCIA Method 1\nSample parent method',
+            'parent': {
+                'name': 'Parent Method',
+                'description': 'Sample parent method',
+            },
+        }
+    ]
+    """
     TO_DELETE = ("@context", "@type")
     for method in data:
         for field in TO_DELETE:
@@ -30,10 +146,76 @@ def json_ld_lcia_set_method_metadata(data):
 
 
 def json_ld_lcia_convert_to_list(data):
+    """
+    Convert the Life Cycle Impact Assessment (LCIA) categories in the given data to a list.
+
+    Takes the LCIA categories from the input data dictionary and returns them as a list.
+
+    Parameters
+    ----------
+    data : dict
+        A dictionary containing the LCIA categories with their respective keys.
+
+    Returns
+    -------
+    list
+        A list of dictionaries representing the LCIA categories.
+
+    Examples
+    --------
+    >>> data = {
+    ...     "lcia_categories": {
+    ...         "category_1": {"name": "LCIA Category 1"},
+    ...         "category_2": {"name": "LCIA Category 2"},
+    ...     }
+    ... }
+    >>> json_ld_lcia_convert_to_list(data)
+    [{'name': 'LCIA Category 1'}, {'name': 'LCIA Category 2'}]
+    """
     return data["lcia_categories"].values()
 
 
 def json_ld_lcia_reformat_cfs_as_exchanges(data):
+    """
+    Reformat the impact factors of Life Cycle Impact Assessment (LCIA) methods as exchanges.
+
+    Modifies the given LCIA methods data by renaming the 'impactFactors' field to 'exchanges' and
+    updating the fields within each exchange.
+
+    Parameters
+    ----------
+    data : list
+        A list of dictionaries representing LCIA methods with impact factors.
+
+    Returns
+    -------
+    list
+        A list of dictionaries representing the updated LCIA methods with reformatted exchanges.
+
+    Examples
+    --------
+    >>> data = [
+    ...     {
+    ...         "impactFactors": [
+    ...             {
+    ...                 "value": 1.0,
+    ...                 "unit": {"name": "kg"},
+    ...             }
+    ...         ],
+    ...     }
+    ... ]
+    >>> json_ld_lcia_reformat_cfs_as_exchanges(data)
+    [
+        {
+            'exchanges': [
+                {
+                    'amount': 1.0,
+                    'unit': 'kg',
+                }
+            ],
+        }
+    ]
+    """
     for method in data:
         method["exchanges"] = method.pop("impactFactors")
         for exc in method["exchanges"]: