diff --git a/internal_UUID_finder.sh b/internal_UUID_finder.sh
new file mode 100755
index 0000000..d14b887
--- /dev/null
+++ b/internal_UUID_finder.sh
@@ -0,0 +1,46 @@
+#!/usr/local/bin/bash
+
+declare -A styled=( ["brief@mozdev.org"]="brief"
+                    ["CookieAutoDelete@kennydo.com"]="cookie_autodelete"
+                    ["{174b2d58-b983-4501-ab4b-07e71203cb43}"]="dark_mode"
+                    ["jid1-BoFifL9Vbdl2zQ@jetpack"]="decentraleyes"
+                    ["@testpilot-containers"]="multi_account_containers"
+                    ["https-everywhere@eff.org"]="https_everywhere"
+                    ["multipletab@piro.sakura.ne.jp"]="multiple_tab_handler"
+                    ["neaturl@hugsmile.eu"]="neat_url"
+                    ["{73a6fe31-595d-460b-a920-fcc0f8843232}"]="noscript"
+                    ["{1b1e6108-2d88-4f0f-a338-01f9dbcccd6f}"]="request_control"
+                    ["skipredirect@sblask"]="skip_redirect"
+                    ["{b3e677f4-1150-4387-8629-da738260a48e}"]="smart_https"
+                    ["{e225ac78-5e83-484b-a16b-b6ed0924212f}"]="tab_suspender"
+                    ["treestyletab@piro.sakura.ne.jp"]="tree_style_tab"
+                    ["tridactyl.vim@cmcaine.co.uk"]="tridactyl"
+                    ["uBlock0@raymondhill.net"]="ublock_origin"
+                    ["uBO-Scope@raymondhill.net"]="ubo_scope"
+                    ["uMatrix@raymondhill.net"]="umatrix"
+                    ["vim-vixen@i-beam.org"]="vim_vixen"
+                  )
+
+line=$(sed -n -e '/^user_pref("extensions.webextensions.uuids"/p' ../prefs.js)
+
+## Remove prefix and suffix
+prefix='user_pref("extensions.webextensions.uuids", "{'
+suffix='}");'
+line=${line#$prefix}
+line=${line%$suffix}
+prefix='\\"'
+suffix='\\"'
+
+IFS=',' read -ra EXTS <<< "$line"
+for i in "${EXTS[@]}"; do
+    id=${i%:*}
+    uuid=${i#*:}
+    id=${id#$prefix}
+    id=${id%$suffix}
+    uuid=${uuid#$prefix}
+    uuid=${uuid%$suffix}
+    if test "${styled[$id]+isset}"
+    then
+        echo "${styled[$id]}=$uuid" >> 'ShadowFox_customization/internal_UUIDs.txt'
+    fi;
+done