Backlinks

A backlink for a given web resource is a link from some other website (the referrer) to that web resource (the referent).

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 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.

(У мене вже є менеджер скриптів, дайте мені встановити його!)

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            Backlinks
// @name:de         Rückverweise
// @description     A backlink for a given web resource is a link from some other website (the referrer) to that web resource (the referent).
// @description:de  Ein Rückverweis oder Backlink bezeichnet einen Link, der von einer anderen Webseite ausgehend zu einer bestimmten Webseite führt.
// @version         1.0.1.5
// @author          Wack.3gp (https://greasyfork.org/users/4792)
// @copyright       2021+, Wack.3gp
// @namespace       https://greasyfork.org/users/4792
// @license         CC BY-NC-ND 4.0; http://creativecommons.org/licenses/by-nc-nd/4.0/
//
// @match           *://*/*
// @noframes
//
// @grant           GM_registerMenuCommand
// @grant           GM_notification
// @grant           GM_xmlhttpRequest
//
// @compatible      Chrome tested with Tampermonkey
// @supportURL      https://greasyfork.org/scripts/423644/feedback
// @contributionURL https://www.paypal.com/donate/?hosted_button_id=BYW9D395KJWZ2
// @contributionAmount €1.00
// ==/UserScript==

/* jshint esversion: 9 */

(function() {
    'use strict';

    const _vault = "4792";
    const _isOriginal = GM_info.script.namespace.includes(_vault);
    const _originalURL = GM_info.script.supportURL.replace("feedback", "");

    const checkProtection = () => {
        if (!_isOriginal) {
            alert("Please install the Original Version");
            window.location.href = _originalURL;
            return false;
        }
        return true;
    };

    GM_registerMenuCommand("🔎 Check Backlinks", function () {
        
        if (!checkProtection()) return;

        var website = prompt("Please enter your Website:", document.URL);
        if (website == null) {
            alert("User cancelled the prompt.");
            return;
        }
        
        if (website == "") {
            alert("Input field must not be empty.");
            return;
        }

        var urlPattern = /^(http.?:\/\/|)\w*\.*[A-Z]*(\.\w*($|\/.*|\?)|\?.*|\d*|$)($|\:\d*($|\/|\?))/gim;
        if (!website.match(urlPattern)) {
            alert("Invalid URL");
            return;
        }
        
        var websitereplace = website.replace(/.*(\/\/|www.)/gim, '').split(/\/$/gim)[0];

        GM_xmlhttpRequest({
            method: "GET",
            url: 'https://www.google.com/search?q="' + websitereplace + '" -site:' + websitereplace,
            onload: function (response) {
                if (response.responseText.includes('id="result-stats"')) {
                    var popularity = response.responseText.split('<div id="result-stats">').pop().split('<nobr>')[0];
                    alert(popularity);
                    
                    console.log(`%c ${GM_info.script.name} %c (Verified Original)`, 
                                "background: #4285F4; color: white; font-weight: bold; padding: 2px 5px;", "color: #4285F4;");
                } else {
                    alert("Google might be showing a Captcha. Please try again later or visit Google search manually.");
                }
            }
        });
    });

    GM_registerMenuCommand("🎁 Donate", function () {
alert("Hello, I'm " + GM_info.script.author + "\nand I wrote this script as a hobby.\nIf you find it useful, I would appreciate a small donation! =)");
    window.open(GM_info.script.header.match(/@contributionURL\s+(.+)/)[1], "_blank");
    });

    if (_isOriginal) {
        console.log(`%c ${GM_info.script.name} v${GM_info.script.version} %c (Verified Original)`, 
                    "background: #f44336; color: white; font-weight: bold; padding: 2px 5px;", "color: #f44336;");
    }

})();