diff --git a/.gitmodules b/.gitmodules
index f89cba0..846c456 100644
--- a/.gitmodules
+++ b/.gitmodules
@@ -1,3 +1,6 @@
 [submodule "src/.local/bin/calcpy"]
 	path = src/.local/bin/calcpy
 	url = https://github.com/idanpa/calcpy
+[submodule "src/.local/bin/pyinstantref"]
+	path = src/.local/bin/pyinstantref
+	url = https://github.com/dogeystamp/pyinstantref
diff --git a/programs b/programs
index 056e45a..e1dbd4d 100644
--- a/programs
+++ b/programs
@@ -113,6 +113,12 @@ typst
 ipython
 python-sympy
 
+# .local/bin/pyinstantref script
+python-pydbus
+xorg-xprop
+xdotool
+xsel
+
 # inkscape shortcut manager
 python-xlib
 
diff --git a/src/.config/mimeapps.list b/src/.config/mimeapps.list
index a9f1c64..f955cc2 100644
--- a/src/.config/mimeapps.list
+++ b/src/.config/mimeapps.list
@@ -1,3 +1,4 @@
 
 [Default Applications]
 application/pdf=org.pwmt.zathura.desktop
+x-scheme-handler/pdfref=copy_ref
diff --git a/src/.config/zathura/zathurarc b/src/.config/zathura/zathurarc
index 69ffc7b..60a8b4a 100644
--- a/src/.config/zathura/zathurarc
+++ b/src/.config/zathura/zathurarc
@@ -11,3 +11,5 @@ set inputbar-fg "#CCCCCC"
 set statusbar-bg "#000000"
 
 set selection-clipboard clipboard
+
+map <C-l> exec copy_ref
diff --git a/src/.local/bin/pyinstantref b/src/.local/bin/pyinstantref
new file mode 160000
index 0000000..c189dcd
--- /dev/null
+++ b/src/.local/bin/pyinstantref
@@ -0,0 +1 @@
+Subproject commit c189dcde7566bcbab35c288442e338df8ff25215
diff --git a/src/.local/share/applications/pdfref.desktop b/src/.local/share/applications/pdfref.desktop
new file mode 100644
index 0000000..9c60dcf
--- /dev/null
+++ b/src/.local/share/applications/pdfref.desktop
@@ -0,0 +1,6 @@
+[Desktop Entry]
+Name=PDF Instant Reference
+Exec=pdfref_handler
+Type=Application
+Terminal=false
+MimeType=x-scheme-handler/pdfref;
diff --git a/src/.profile b/src/.profile
index b1ea773..8426356 100644
--- a/src/.profile
+++ b/src/.profile
@@ -76,6 +76,7 @@ export TYPST_ROOT="$HOME/nt"
 export PATH="$PATH":~/.local/bin
 export PATH="$PATH":~/.local/bin/deskutils
 export PATH="$PATH":~/.local/bin/deskutils/soundboard
+export PATH="$PATH":~/.local/bin/pyinstantref
 
 export PATH="$PATH":"$XDG_DATA_HOME"/npm/bin
 export PATH="$PATH":"$XDG_DATA_HOME"/go/bin