diff --git a/docs/conf.py b/docs/conf.py
index 45cbf296..35050f11 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -5,12 +5,13 @@
 import os
 import sys
 
+
 # -- Project information -----------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#project-information
 
 project = "Optuna Dashboard"
 copyright = "2023, Optuna Dashboard Contributors"
-author = "Masashi Shibata"
+author = "Optuna Dashboard Contributors."
 
 # -- General configuration ---------------------------------------------------
 # https://www.sphinx-doc.org/en/master/usage/configuration.html#general-configuration
diff --git a/optuna_dashboard/_app.py b/optuna_dashboard/_app.py
index 97f58aa9..d91710f6 100644
--- a/optuna_dashboard/_app.py
+++ b/optuna_dashboard/_app.py
@@ -511,9 +511,12 @@ def run_server(
     artifact_backend: Optional[ArtifactBackend] = None,
 ) -> None:
     """Start running optuna-dashboard and blocks until the server terminates.
+
     This function uses wsgiref module which is not intended for the production
     use. If you want to run optuna-dashboard more secure and/or more fast,
-    please use WSGI server like Gunicorn or uWSGI via `wsgi()` function.
+    please use WSGI server like Gunicorn or uWSGI via :func:`wsgi` function.
+
+
     """
     app = create_app(get_storage(storage), artifact_backend=artifact_backend)
     run(app, host=host, port=port)
diff --git a/optuna_dashboard/artifact/file_system.py b/optuna_dashboard/artifact/file_system.py
index 45e530f1..bd24f25b 100644
--- a/optuna_dashboard/artifact/file_system.py
+++ b/optuna_dashboard/artifact/file_system.py
@@ -6,6 +6,24 @@ from typing import TYPE_CHECKING
 
 
 class FileSystemBackend:
+    """An artifact backend for file systems.
+
+    Example:
+       .. code-block:: python
+
+          import optuna
+          from optuna_dashboard.artifact import upload_artifact
+          from optuna_dashboard.artifact.file_system import FileSystemBackend
+
+          artifact_backend = FileSystemBackend("./artifacts")
+
+          def objective(trial: optuna.Trial) -> float:
+              ... = trial.suggest_float("x", -10, 10)
+              file_path = generate_example_png(...)
+              upload_artifact(artifact_backend, trial, file_path)
+              return ...
+    """
+
     def __init__(self, base_path: str) -> None:
         self._base_path = base_path