easy-image-dw

// ==UserScript==
// @name         Easy Image Downloader
// @namespace    http://yourwebsite.com
// @version      1.0
// @description  Opens image in new tab when Alt key + Left click is used, prompts to save image when Alt + Shift + Left click is pressed
// @author       ayusht9
// @match        *://*/*
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    
    document.addEventListener('click', function(event) {
        if (event.altKey && event.button === 0 && event.target.tagName === 'IMG') {
            if (event.shiftKey) {
                // Save Image Prompt (Alt + Shift + Left Click)
                event.preventDefault();
                var imageUrl = event.target.src;
                var link = document.createElement('a');
                link.href = imageUrl;
                link.download = '';
                link.click();
            } else {
                // Open Image in New Tab (Alt + Left Click)
                window.open(event.target.src, '_blank');
            }
        }
    });
})();