diff --git a/docs/conf.py b/docs/conf.py
index 7a3fe49..1608787 100644
--- a/docs/conf.py
+++ b/docs/conf.py
@@ -55,6 +55,18 @@
 
 todo_include_todos = True
 
+html_context = {}
+
+if os.environ.get("READTHEDOCS") == "True":
+    project_slug = os.environ.get("READTHEDOCS_PROJECT")
+    version_slug = os.environ.get("READTHEDOCS_VERSION")
+    language_slug = os.environ.get("READTHEDOCS_LANGUAGE", "en")
+
+    # RTD's standard download URL pattern
+    pdf_url = f"https://{project_slug}.readthedocs.io/_/downloads/{language_slug}/{version_slug}/pdf/"
+
+    html_context["pdf_url"] = pdf_url
+
 # -- Options for Texinfo output -------------------------------------------
 
 locale_dirs = [