How to make your own airtable bookmark bookmarklet

bookmarklet.js

// 1. Create a table on Airtable, and make URL/text columns with these names:
//        URL, Title, Description, Image, Feed
//    
// 2. Add a Form view. Click "Open form", then copy the URL. Set `airtable_form_url`
//    below to that URL.
//
// 3. Create a new bookmark in your web browser, and paste in the code below. Whenever
//    you're on a page you want to save, click the bookmark ("bookmarklet", technically).
//    You'll go to the airtable form, and the columns listed above will be prefilled.
//
// 4. Customize. It's OK to leave any of those columns out, and you can also add
//    additional columns. On one table, I include "Save for later" (checkbox), Rating
//    (stars), tags (single-line text, with tags separated by commas since I don't
//    want to have to pre-define the tags), and commentary (long text).
//
//    You can also modify the code below to extract whatever you want.
//
// 5. Check out my soundcloud: https://sample.findka.com (I use a bookmarklet like this
//    to curate newsletters for it).
//
// 6. (This is for desktop. The situation isn't great on mobile, but see my notes at
//    https://essays.findka.com/bookmarklet/).

javascript:(function () {
  let airtable_form_url = "https://airtable.com/shrabc123";

  let q = (s) => document.querySelector(s);
  let get = (m, k) => m ? m[k] : null;

  let title = get(q('title'), 'innerHTML') || "";
  let description = get(q('meta[name=description]'), 'content') ||
      get(q("meta[property='og:description']"), 'content') ||
      get(q("meta[property='twitter:description']"), 'content') ||
      "";
  let image = get(q('meta[name=image]'), 'content') ||
      get(q("meta[property='og:image']"), 'content') ||
      get(q("meta[property='twitter:image']"), 'content') ||
      "";
  var feed = get(q("link[type='application/atom+xml']"), 'href') ||
      get(q("link[type='application/rss+xml']"), 'href') ||
      "";
  feed = (new URL(feed, document.location)).href;

  window.location = airtable_form_url +
      "?prefill_URL=" + encodeURIComponent(document.location) +
      "&prefill_Title=" + encodeURIComponent(title) +
      "&prefill_Description=" + encodeURIComponent(description) +
      "&prefill_Image=" + encodeURIComponent(image) +
      "&prefill_Feed=" + encodeURIComponent(feed);
})()