Literally just a tweak from https://gist.github.com/prehensile/ce9f60e1aa75fe4bc22e1b61afbcdc02

ParentzoneGalleryTweak.user.js

// ==UserScript==
// @name         Generate Parentzone Gallery image links
// @namespace    http://tampermonkey.net/
// @version      0.2
// @description  Adds a list of links to all of the images in a ParentZone gallery to the page itself.
// @author       @prehensile
// @match        https://www.parentzone.me/gallery
// @grant        none
// ==/UserScript==

var __pzKey = "key";


// generate links in page from gallery data
function parseData( dat ){

    const linkList = document.createElement("ul");

    for( const item of dat ){
        var itemId = item["id"];
        const url = "https://api.iconnectdaily.net/api/v1/media/" + itemId + "?key=" + __pzKey + "&size=full";
        //console.log( url );
        const listItem = document.createElement("li");
        const hrefTag = document.createElement("a");
        hrefTag.classList.add("generatedLink");
        hrefTag.href = url;
        hrefTag.innerHTML = item["fileName"];
        listItem.appendChild( hrefTag );
        linkList.appendChild( listItem );
    }
    //console.log( linkList);
    document.body.insertBefore( linkList, document.body.firstChild);
}

// intercept gallery data from API call
(function(open) {
    XMLHttpRequest.prototype.open = function() {
        if( arguments[1] == "https://api.parentzone.me/v1/gallery/" ){
            this.addEventListener("readystatechange", function() {
                if( this.readyState == 4 ) {
                    var status = this.status;
                    if(status >= 200 && status < 400){
                        // console.log( this.response );
                        parseData( this.response );
                    }
                }
            }, false);
        }
        open.apply(this, arguments);
    };
})(XMLHttpRequest.prototype.open);


// intercept the parentzone API key from XMLHttpRequest.setRequestHeader() calls
(function(setRequestHeader) {
    XMLHttpRequest.prototype.setRequestHeader = function() {
        console.log( arguments );
        if( arguments[0] == "X-API-Key" ){
            __pzKey = arguments[1];
        }
        setRequestHeader.apply(this, arguments);
    };
})(XMLHttpRequest.prototype.setRequestHeader);