diff --git a/tests/fixtures/docs/manual.md b/tests/fixtures/docs/manual.md
new file mode 100644
index 0000000..ab60f3b
--- /dev/null
+++ b/tests/fixtures/docs/manual.md
@@ -0,0 +1 @@
+![image](img.png){ .on-glb }
diff --git a/tests/fixtures/mkdocs-manual.yml b/tests/fixtures/mkdocs-manual.yml
new file mode 100644
index 0000000..9d996ef
--- /dev/null
+++ b/tests/fixtures/mkdocs-manual.yml
@@ -0,0 +1,9 @@
+site_name: test mkdocs_glightbox
+use_directory_urls: true
+
+markdown_extensions:
+  - attr_list
+
+plugins:
+    - glightbox:
+        manual: true
diff --git a/tests/test_builds.py b/tests/test_builds.py
index 4c76a47..91b9f4c 100644
--- a/tests/test_builds.py
+++ b/tests/test_builds.py
@@ -663,3 +663,31 @@ def test_enable_by_image(tmp_path):
         rf'<a class="glightbox".*?href="{re.escape(path)}img\.png".*?><img.*?class="on-glb".*?src="{re.escape(path)}img\.png".*?\/><\/a>',
         contents,
     )
+
+
+def test_manual(tmp_path):
+    """
+    Manual mode
+    """
+    mkdocs_file = "mkdocs-manual.yml"
+    testproject_path = validate_mkdocs_file(tmp_path, f"tests/fixtures/{mkdocs_file}")
+    file = testproject_path / "site/index.html"
+    contents = file.read_text(encoding="utf8")
+    validate_static(contents)
+    validate_script(contents)
+    assert (
+        re.search(
+            r'<a class="glightbox".*?href="img\.png".*?>\s*<img.*?src="img\.png".*?\/><\/a>',
+            contents,
+        )
+        is None
+    )
+
+    file = testproject_path / "site/manual/index.html"
+    contents = file.read_text(encoding="utf8")
+    validate_static(contents, path="../")
+    validate_script(contents)
+    assert re.search(
+        r'<a class="glightbox".*?href="..\/img\.png".*?>\s*<img.*?src="..\/img\.png".*?\/><\/a>',
+        contents,
+    )