Copy text from Google Play Books

book-copy.js

// Select the proper frame in devtools and run this script

const nextPageButton = Array.from(document.querySelectorAll('mat-icon')).find((e) => e.innerHTML === 'chevron_right');

const getCurrentPageText = () => Array.from(document.querySelectorAll('reader-page'))
  .filter(e => e.checkVisibility())
  .map((e) => e.textContent)
  .join('');

const isLastPage = () => nextPageButton.classList.contains('mat-button-disabled');
const sleep = async () => new Promise(res => setTimeout(res, 5));

let allText = '';
;(async () => {
  while (!isLastPage()) {
    const currentPageText = getCurrentPageText()
    allText += currentPageText
    console.log(allText)
    nextPageButton.click()
    while (currentPageText !== '' && currentPageText === getCurrentPageText()) {
      await sleep()
    }
  }
})()

console.log(allText)