diff --git a/pages/common/mutool.md b/pages/common/mutool.md
index 59e61ff36..2dadc9272 100644
--- a/pages/common/mutool.md
+++ b/pages/common/mutool.md
@@ -1,6 +1,7 @@
 # mutool
 
 > Convert PDF files, query information and extract data.
+> More information: <https://mupdf.com/docs>.
 
 - Convert pages 1-10 into 10 PNG images: