diff --git a/build.ts b/build.ts
index 81bd84f..9d9f138 100644
--- a/build.ts
+++ b/build.ts
@@ -14,6 +14,7 @@ const entrypoints = [
 	"./src/trim.ts",
 	"./src/trim-end.ts",
 	"./src/trim-start.ts",
+	"./src/uis/truncate.ts",
 ];
 
 async function build() {
diff --git a/package.json b/package.json
index 0fed84d..118096a 100644
--- a/package.json
+++ b/package.json
@@ -3,10 +3,11 @@
   "name": "kunkun-ext-string-utils",
   "version": "1.0.2",
   "license": "MIT",
+  "author": "NaN72dev",
   "type": "module",
   "repository": "https://github.com/NaN72dev/kunkun-ext-string-utils",
   "kunkun": {
-    "name": "String Utils",
+    "name": "String Utilities",
     "shortDescription": "A string utility headless Extension",
     "longDescription": "A string utility headless Extension",
     "identifier": "kunkun-ext-string-utils",
@@ -70,6 +71,13 @@
         "main": "dist/trim-start.js",
         "cmds": []
       }
+    ],
+    "templateUiCmds": [
+      {
+        "main": "dist/truncate.js",
+        "name": "Truncate a string to a maximum length",
+        "cmds": []
+      }
     ]
   },
   "scripts": {
diff --git a/src/uis/truncate.ts b/src/uis/truncate.ts
new file mode 100644
index 0000000..f59792a
--- /dev/null
+++ b/src/uis/truncate.ts
@@ -0,0 +1,58 @@
+import { Action, expose, Form, Icon, IconEnum, List, TemplateUiCommand, ui, clipboard, toast } from "@kksh/api/ui/template";
+import { isEmpty } from "lodash";
+import truncate from "lodash/truncate";
+
+class TruncateExt extends TemplateUiCommand {
+    async onFormSubmit(value: Record<string, any>): Promise<void> {
+        const options: Parameters<typeof truncate>[1] = { omission: value.omission }
+
+        if (value.maxLength > 0)
+            // cannot pass `length: undefined` directly to options, lodash treats it as 0
+            options.length = value.maxLength + value.omission.length;
+
+        if (!isEmpty(value.separator))
+            // cannot pass `length: undefined` directly to options, lodash treats it as " " (space)
+            options.separator = value.separator;
+
+        const truncatedText = truncate(value.string, options);
+        await clipboard.writeText(truncatedText);
+        toast.success(`Copied "${truncatedText}"`);
+    }
+
+    async load() {
+        const clipboardText = await clipboard.readText();
+
+        return ui.render(
+            new Form.Form({
+                key: "truncateForm",
+                fields: [
+                    new Form.InputField({
+                        key: "string",
+                        label: "Text",
+                        placeholder: "The text to truncate",
+                        default: clipboardText,
+                        component: "textarea",
+                    }),
+                    new Form.NumberField({
+                        key: "maxLength",
+                        label: "Maximum length (not including omission, non-positive will be treated as 30)",
+                        placeholder: "Maximum length to be truncated",
+                    }),
+                    new Form.InputField({
+                        key: "separator",
+                        label: "Separator (leave blank for none)",
+                        placeholder: "The separator (or regex pattern) to truncate to",
+                    }),
+                    new Form.InputField({
+                        key: "omission",
+                        label: "Omission (the text to show when the text is truncated)",
+                        placeholder: "The string to indicate text is omitted",
+                        default: "..."
+                    }),
+                ],
+            })
+        );
+    }
+}
+
+expose(new TruncateExt())
\ No newline at end of file