diff --git a/quartz/util/path.ts b/quartz/util/path.ts
index dceb89b..c02bfb1 100644
--- a/quartz/util/path.ts
+++ b/quartz/util/path.ts
@@ -168,6 +168,9 @@ export function resolveRelative(current: FullSlug, target: FullSlug | SimpleSlug
 
 export function splitAnchor(link: string): [string, string] {
   let [fp, anchor] = link.split("#", 2)
+  if (fp.endsWith(".pdf")) {
+    return [fp, anchor === undefined ? "" : `#${anchor}`]
+  }
   anchor = anchor === undefined ? "" : "#" + slugAnchor(anchor)
   return [fp, anchor]
 }