diff --git a/README.md b/README.md
index df4462a..49b8d5d 100644
--- a/README.md
+++ b/README.md
@@ -57,6 +57,11 @@ PF_INFO="ascii"
 # Example: Only Information.
 PF_INFO="title os host kernel uptime pkgs memory"
 
+# A file to source before running pfetch.
+# Default: unset
+# Valid: A shell script
+PF_SOURCE=""
+
 # Separator between info name and info data.
 # Default: unset
 # Valid: string
diff --git a/pfetch b/pfetch
index 77ee310..2311f16 100755
--- a/pfetch
+++ b/pfetch
@@ -1296,6 +1296,11 @@ main() {
     # This gives full control over what it displayed on the screen.
     exec 6>&1 >/dev/null
 
+    # Allow the user to execute their own script and modify or
+    # extend pfetch's behavior.
+    # shellcheck source=/dev/null
+    . "${PF_SOURCE:-/dev/null}" ||:
+
     # Ensure that the 'TMPDIR' is writable as heredocs use it and
     # fail without the write permission. This was found to be the
     # case on Android where the temporary directory requires root.