diff --git a/jwebsite/site.py b/jwebsite/site.py
index 61935de..93de39d 100644
--- a/jwebsite/site.py
+++ b/jwebsite/site.py
@@ -1,4 +1,5 @@
 from pathlib import Path
+from shutil import copy
 from typing import Any
 
 from jinja2.environment import Environment
@@ -12,6 +13,7 @@ class Site:
         self.__root_directory = root_directory
         self.__output_directory = root_directory / "build"
         self.__environment = Environment(loader=FileSystemLoader(searchpath=root_directory / "src"))
+        self.__environment.filters.update({"output": self.__output})
         self.__content = ContentDirectory(root_directory / "content")
 
     @property
@@ -26,3 +28,16 @@ class Site:
 
         with open(output_path, "w") as output_file:
             output_file.write(content)
+
+    def __output(self, path: str | Path) -> str:
+        path = Path(path)
+        if path.is_absolute():
+            src_path = path
+            relative_src_path = src_path.relative_to(self.__content.path)
+        else:
+            src_path = self.__content.path / path
+            relative_src_path = path
+        dst_path = self.__output_directory / relative_src_path
+        dst_path.parent.mkdir(parents=True, exist_ok=True)
+        copy(src_path, dst_path, follow_symlinks=True)
+        return f"/{relative_src_path}"
diff --git a/tests/test_site.py b/tests/test_site.py
index 6d00504..3b75eb5 100644
--- a/tests/test_site.py
+++ b/tests/test_site.py
@@ -17,3 +17,16 @@ def test_render_page(datadir: Path, site_dir: FakeFilesystem):
     site.render("index.j2", "index.html")
     with open(datadir / "build" / "index.html", encoding="utf-8") as ouput_file:
         assert ouput_file.read() == "<p>Peter</p><p>Steven</p>"
+
+
+def test_output_file(datadir: Path, site_dir: FakeFilesystem):
+    site = Site(datadir)
+    build_dir = datadir / "build"
+
+    site.render("output-file.j2", "output-file.html")
+
+    with open(build_dir / "assets/steven-avatar", encoding="utf-8") as ouput_file:
+        assert ouput_file.read() == "Yipee\n"
+
+    with open(build_dir / "output-file.html", encoding="utf-8") as ouput_file:
+        assert ouput_file.read() == "/assets/steven-avatar\n"
diff --git a/tests/test_site/content/assets/steven-avatar b/tests/test_site/content/assets/steven-avatar
new file mode 100644
index 0000000..1c2028f
--- /dev/null
+++ b/tests/test_site/content/assets/steven-avatar
@@ -0,0 +1 @@
+Yipee
diff --git a/tests/test_site/src/output-file.j2 b/tests/test_site/src/output-file.j2
new file mode 100644
index 0000000..4117c47
--- /dev/null
+++ b/tests/test_site/src/output-file.j2
@@ -0,0 +1,2 @@
+{{ "assets/steven-avatar" | output }}
+