Netacad2PDF (requires a _lot_ of memory)

console_paste.js

function extract_chapter_links() {
    return [...document.querySelectorAll('a.navlink')]
        .map(link => {
            return {
                name: link.querySelector('.navlink_name').innerText,
                label: link.querySelector('.navlink_label').innerText,
                href: link.href
            }
        }).filter(link => !link.href.includes('#'));
}

function filter_top_links(links) {
    return links.filter(link => (/.+?\.1$/mgi.test(link.label)));
}

function create_iframe(link) {
    let iframe = document.createElement('iframe');
    iframe.src = link.href;
    iframe.setAttribute('frameborder', '0');
    iframe.style.width = `-webkit-fill-available`;
    return iframe;
}

function await_loaded(iframe) {
    return new Promise((resolve => {
        iframe.addEventListener('load', () => {
            setTimeout(() => {
                resolve(iframe);
            }, 3000);
        });
    }));
}

function run_in_iframe(iframe, functions) {
    functions.forEach(fn => iframe.contentWindow.eval(`(${fn})()`));
}

function hide_navbar() {
    document.querySelector('#side-nav').style.display = 'none';
    document.querySelectorAll('.nav-visible').forEach(element => {
        element.classList.remove('nav-visible');
    })
}

function inject_theme() {
    document.querySelectorAll('.block-container h1').forEach(element => {
        element.style.background = `linear-gradient(90deg,#8f370e 0,#000000)`
    });
}

function remove_interactive() {
    // tbd
}

function remove_header() {
    document.querySelectorAll('.app-header, #breadcrumb-wrapper')
        .forEach(element => element.remove());
}

async function insert_iframes(iframes) {
    for (let i = 0; i < iframes.length; i++) {
        let iframe = iframes[i];
        document.documentElement.append(iframe)
        await await_loaded(iframe);

        // hack to get rid of scrolling and set full height.
        iframe.height = iframe.contentWindow.document.documentElement.scrollHeight + 'px';

        document.getElementById('status').innerText =
            `loading pdf content..  ${(((i + 1) / iframes.length) * 100).toFixed(0)}%`;
    }
}

function write_head(links) {
    document.write(`
        <style>
            h2, h3 {
                text-align: center;
            }
            .title {
                margin-top: 128px;
            }
            .toc {
                display: flex;
                margin-top: 100vh;
                min-height: 100vh;
            }
            .name {
                display: block;
                margin-left: 24px;
            }
        </style>
    <div id="loader">
        <h2 class="title">${document.querySelector('.page-title').innerText}</h2>
        <h3 id="status"></h3>
    </div>
`);
}

let links = extract_chapter_links();
let iframes = filter_top_links(links).map(create_iframe);

write_head(links);
insert_iframes(iframes).then(() => {
    iframes.forEach(iframe => run_in_iframe(iframe, [
        hide_navbar, inject_theme, remove_header, remove_interactive
    ]))
    document.getElementById('loader').remove();
    document.body.remove();
    window.print();
});