diff --git a/data/commands.json b/data/commands.json
index 0540d9b..3c45ce4 100644
--- a/data/commands.json
+++ b/data/commands.json
@@ -261,6 +261,14 @@
     {
       "command": "pavucontrol",
       "desc": "Audio Control"
+    },
+    {
+      "command": "pdfunite file.pdf file.pdf united.pdf",
+      "desc": "Unite multiple pdf files into one"
+    },
+    {
+      "command": "qpdf --password='' --decrypt encrypted_file.pdf decrypted_file.pdf",
+      "desc": "Decrypt (or encrypt with --encrypt) a pdf file"
     }
   ]
 }