Universal Web Edit Mode

Cho phép bật/tắt chế độ chỉnh sửa trên tất cả website

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

// ==UserScript==
// @name         Universal Web Edit Mode
// @namespace    http://tampermonkey.net/
// @license      MIT
// @version      1.01
// @description  Cho phép bật/tắt chế độ chỉnh sửa trên tất cả website
// @author       an vu an
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Tạo nút bật/tắt
    const btn = document.createElement("button");
    btn.textContent = "✏️ Edit OFF";
    Object.assign(btn.style, {
        position: "fixed",
        top: "10px",
        right: "10px",
        zIndex: "999999",
        padding: "6px 12px",
        background: "#007bff",
        color: "#fff",
        border: "none",
        borderRadius: "6px",
        cursor: "pointer",
        fontSize: "14px",
        fontWeight: "bold",
        boxShadow: "0 2px 6px rgba(0,0,0,0.2)"
    });

    let editable = false;
    let overlay = null;

    btn.onclick = () => {
        editable = !editable;

        if (editable) {
            // Thử bật contentEditable toàn trang
            document.body.contentEditable = true;
            btn.textContent = "✅ Edit ON";
            btn.style.background = "#28a745";

            // Nếu là PDF viewer (toàn bộ trang là <embed>/<object>/<iframe>), thêm overlay
            if (document.querySelector("embed[type='application/pdf'], object[type='application/pdf'], iframe[src*='.pdf']")) {
                overlay = document.createElement("div");
                Object.assign(overlay.style, {
                    position: "fixed",
                    top: "0",
                    left: "0",
                    width: "100%",
                    height: "100%",
                    zIndex: "999998",
                    background: "transparent",
                    color: "red",
                    fontSize: "16px"
                });
                overlay.contentEditable = true;
                document.body.appendChild(overlay);
            }

        } else {
            // Tắt chế độ edit
            document.body.contentEditable = false;
            btn.textContent = "✏️ Edit OFF";
            btn.style.background = "#007bff";

            if (overlay) {
                overlay.remove();
                overlay = null;
            }
        }
    };

    document.body.appendChild(btn);
})();