diff --git a/overleaf_vimrc.user.js b/overleaf_vimrc.user.js
new file mode 100644
index 0000000..2d0bc3b
--- /dev/null
+++ b/overleaf_vimrc.user.js
@@ -0,0 +1,28 @@
+// ==UserScript==
+// @name         Overleaf vimrc
+// @namespace    fr.homnomnom
+// @version      0.1
+// @description  Custom vimrc for CodeMirror
+// @author       n0m1s
+// @match        https://www.overleaf.com/project/*
+// @grant        none
+// ==/UserScript==
+
+(function() {
+    'use strict';
+    const retry = setInterval(() => {
+        if (window._debug_editors === undefined) return;
+        clearInterval(retry);
+        // get current editor instance
+        const editor = window._debug_editors[window._debug_editors.length -1];
+
+        // vim keyboard plugin
+        const vimKeyboard = window.ace.require("ace/keyboard/vim");
+        vimKeyboard.Vim.map(",,", "<Esc>", "insert");
+        vimKeyboard.Vim.map(".", ":", "normal");
+
+        // set the modified keyboard handler for editor
+        editor.setKeyboardHandler(vimKeyboard.handler);
+        console.log("Custom key bindings applied");
+    }, 100);
+})();
\ No newline at end of file