Greasemonkey script that replaces links on image galleries with direct (faster) image links on MiBACT Antenati website. Instructions: 1. Install Greasemonkey (Firefox) or Tampermonkey (Chrome/Firefox). 2. Click https://gist.github.com/pedrox/365fd278393b651a9e6780e7866c469d/raw/MiBACT-Antenati-direct-image-links.user.js

MiBACT-Antenati-direct-image-links.user.js

// ==UserScript==
// @name         MiBACT Antenati direct image links on galleries
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  Replaces links on image galleries with direct (faster) image links
// @author       Pedro Pedruzzi
// @match        http://dl.antenati.san.beniculturali.it/v/*
// @grant        none
// @downloadURL  https://gist.github.com/pedrox/365fd278393b651a9e6780e7866c469d/raw/MiBACT-Antenati-direct-image-links.user.js
// ==/UserScript==

(function() {
    'use strict';

    document.querySelectorAll("img.giThumbnail").forEach(img => {
        let thumbItemId = img.src.match(/g2_itemId=([0-9]+)/)[1];
        let fullImageitemId = (parseInt(thumbItemId, 10) - 1).toString();
        let fullImageUrl = img.src.replace(thumbItemId, fullImageitemId);
        let oldLinkUrl = img.closest("a").href;

        img.closest("tr").querySelectorAll("a").forEach(link => {
            if (link.href == oldLinkUrl) {
                link.href = fullImageUrl;
            }
        });
    });

})();