diff --git a/source/Capitalize.popclipext/Config.js b/source/Capitalize.popclipext/Config.js
deleted file mode 100644
index e00f02ac..00000000
--- a/source/Capitalize.popclipext/Config.js
+++ /dev/null
@@ -1,6 +0,0 @@
-define({
-    identifier: "com.pilotmoon.popclip.extension.capitalize",
-    name: "Capitalize",
-    icon: "square filled Ab",    
-    action: require('capitalize.js'),
-});
\ No newline at end of file
diff --git a/source/Capitalize.popclipext/Config.json b/source/Capitalize.popclipext/Config.json
index 9099514d..906f58fb 100644
--- a/source/Capitalize.popclipext/Config.json
+++ b/source/Capitalize.popclipext/Config.json
@@ -1,9 +1,8 @@
 {
-  "identifier" : "com.pilotmoon.popclip.extension.capitalize",
   "name" : "Capitalize Words",
-  "popclipVersion" : 3543,
+  "identifier" : "xcom.pilotmoon.popclip.extension.capitalize",
   "description" : "Start each selected word with a capital letter.",
-  "note": "Updated for macOS 12.0 Monterey.",
-  "icon" : "capitalize.png",
-  "title" : "Capitalize"
+  "icon" : "square filled Ab",
+  "popclipVersion" : 4151,  
+  "module": "capitalize.js"
 }
\ No newline at end of file
diff --git a/source/Capitalize.popclipext/capitalize.js b/source/Capitalize.popclipext/capitalize.js
index a81f6c2b..cbcdaad6 100644
--- a/source/Capitalize.popclipext/capitalize.js
+++ b/source/Capitalize.popclipext/capitalize.js
@@ -1,38 +1,37 @@
-function capitalizeWord(text) {    
-    text = text.toLowerCase(); // first letter uppercase, others lowercase
-    return text.substr(0, 1).toUpperCase() + text.substr(1);
+function capitalizeWord(text) {
+  text = text.toLowerCase(); // first letter uppercase, others lowercase
+  return text.substr(0, 1).toUpperCase() + text.substr(1);
 }
 
-function capitalizeAll(text) {    
-    const regex=/(\p{L}+['’]\p{L}+|\p{L}+)/gu; // split into something approximating words
-    return text.replace(regex, (match) => capitalizeWord(match));
+function capitalizeAll(text) {
+  const regex = /(\p{L}+['’]\p{L}+|\p{L}+)/gu; // split into something approximating words
+  return text.replace(regex, (match) => capitalizeWord(match));
 }
 
-if (typeof(define) !== 'undefined') { // when running in popclip, export the function
-    define(() => {
-        return (selection) => {        
-            popclip.pasteText(capitalizeAll(selection.text));
-        }
-    })
-}
-else { // when running in jsc, perform tests
-    function test() {
-        const data = [
-            ["blah", "Blah"],
-            ["BLAH", "Blah"],
-            ["'BLAH-blah'", "'Blah-Blah'"],
-            ["\"BLAH-blah'", "\"Blah-Blah'"],
-            ["  BLAH (blah-more", "  Blah (Blah-More"],
-            ["élan güt написанная!", "Élan Güt Написанная!"],
-            ['"Nick\'s best dog\'s fur"', '"Nick\'s Best Dog\'s Fur"'],
-            ["Nick's   best dog's fur", "Nick's   Best Dog's Fur"],
-            ["😀nick's   best dog’s fur", "😀Nick's   Best Dog’s Fur"],
-        ];
-        data.forEach((pair) => {
-            const [input, output]=pair;
-            const result=capitalizeAll(input);
-            print(`${output===result?'pass  ':'fail *'} ${input} => ${result} (expected: ${output})`);
-        });
-    }
-    test();
+exports.action = (input) => {
+  popclip.pasteText(capitalizeAll(input.text));
+};
+
+function test() {
+  const data = [
+    ["blah", "Blah"],
+    ["BLAH", "Blah"],
+    ["'BLAH-blah'", "'Blah-Blah'"],
+    ["\"BLAH-blah'", "\"Blah-Blah'"],
+    ["  BLAH (blah-more", "  Blah (Blah-More"],
+    ["élan güt написанная!", "Élan Güt Написанная!"],
+    ["\"Nick's best dog's fur\"", "\"Nick's Best Dog's Fur\""],
+    ["Nick's   best dog's fur", "Nick's   Best Dog's Fur"],
+    ["😀nick's   best dog’s fur", "😀Nick's   Best Dog’s Fur"],
+  ];
+  data.forEach((pair) => {
+    const [input, output] = pair;
+    const result = capitalizeAll(input);
+    print(
+      `${
+        output === result ? "pass  " : "fail *"
+      } ${input} => ${result} (expected: ${output})`,
+    );
+  });
 }
+test();
diff --git a/source/Capitalize.popclipext/capitalize.png b/source/Capitalize.popclipext/capitalize.png
deleted file mode 100644
index 027a9950..00000000
Binary files a/source/Capitalize.popclipext/capitalize.png and /dev/null differ