Amazon URL Shortener

AmazonUrlShortener.bookmarklet.js

/**
 * @fileoverview
 * This script copies the short URL of the Amazon product page to the clipboard.
 * A short URL is a URL that contains only the product ID.
 *
 * Copyright (c) 2023 hidao80
 * Released under the MIT license
 * https://opensource.org/licenses/mit-license.php
 */
(async v => {
    // When copying to the clipboard, the document must have focus.
    document.body.click();

    const inputUrl = location.href;
    const fields = inputUrl.split("/");
    let shortUrl = "";
    if (inputUrl.includes('r.html?')) {
        // for gift voucher url
        shortUrl = decodeURIComponent(inputUrl).split('&').filter(field => field.match(/U=/) !== null)[0]
        .slice('U='.length, shortUrl.indexOf('?'));
    } else {
        const productId = fields.slice(-1).pop();
        const withoutPrams = productId.replace(/\?.+$/, '');
        if(withoutPrams != productId) {
            // If there is a query parameter, it is not a product ID.
            fields.push(withoutPrams);
        }
        shortUrl = fields.filter(field => field.match(/([%=-]|^$)/) === null).join('/')
        // Delete query parameters
        .replace(/(\/[\d-]+|(hz|ls)\/|www\.|\.co)/g, "")
        .replace(/(\/gp\/product\/|\/dp\/)/, "/d/")
        // Add the beginning of the url
        .replace(/:\//, '://');
    }
    // Copy to clipboard
    await navigator.clipboard.writeText(shortUrl);
    alert(shortUrl);
})()

AmazonUrlShortener.bookmarklet.min.js

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