Grab list of all Kindle books purchased from the currently logged in Amazon account - saves as a JSON file.

grab-my-kindle-books.js

// Grab list of all kindle books purchased from the currently logged in
// Amazon account.  Lets you save this list as a JSON file.

// The following data should be run in the console while viewing the page https://read.amazon.com/

// Kindle booklist fetch derived from jkubecki/ExportKindle.js
// (https://gist.github.com/jkubecki/d61d3e953ed5c8379075b5ddd8a95f22)

// console.save grabbed from DevTools Snipppets
// (https://bgrins.github.io/devtools-snippets/#console-save)

// First define the console.save function - writes the console to a file
(function(console){

  console.save = function(data, filename){

    if(!data) {
      console.error('Console.save: No data')
      return;
    }

    if(!filename) filename = 'console.json'

    if(typeof data === "object"){
      data = JSON.stringify(data, undefined, 4)
    }

    var blob = new Blob([data], {type: 'text/json'}),
        e    = document.createEvent('MouseEvents'),
        a    = document.createElement('a')

    a.download = filename
    a.href = window.URL.createObjectURL(blob)
    a.dataset.downloadurl =  ['text/json', a.download, a.href].join(':')
    e.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null)
    a.dispatchEvent(e)
  }
})(console)

// Now open the database and grab the data
var db = openDatabase('K4W', '5', 'thedatabase', 2 * 1024 * 1024); // database version changed 2021-05
getAmazonCsv = function() {
  db.transaction(function(tx) {
    tx.executeSql('SELECT * FROM bookdata;', [], function(tx, results) {
      // Want to add a field to each element.  Return value from
      // tx.executeSql is readonly.  So I convert it to an array (easy
      // to iterate over) via the following roundabout technique.  (I'm
      // such a JavaScript novice...)
      var as = Array.from(Object.values(JSON.parse(JSON.stringify(results.rows))));
      console.log(as.length);
      for (i = 0; i < as.length; i++) {
        as[i].purchaseDateInterpreted = new Date(as[i].purchaseDate).toLocaleDateString();
      }
      console.save(as, 'amazon-kindle-booklist.json');
    });
  });
};
getAmazonCsv();
db ='';

1. In Chrome browser.
2. Navigate to https://read.amazon.com. Log in (if necessary). Let it refresh with your booklist.
3. Run developer tools.
4. Copy this into a snippet (easiest way).
5. Run the snippet.
6. It'll pop up with a file save dialog - that's your booklist, in JSON, it wants to save.
7. Console shows number of books fetched.

Fields for each book include ASIN, Title, Authors, and Purchase Date.

Apparently read.amazon.com has changed and they're no longer using/updating the K4W database, so this code no longer works.