Lubimy czytać - import data from your bookshelf to XML. Note that the gist downloads only a selected portion of information. Feel free to adjust the `bookshelfData` array to your needs.

importBookshelf.js

let booksXML = "";
let nextPageButton;

const readBooks = () => {
  setTimeout(() => {
    const bookshelfData = [
      ...document.querySelectorAll(".authorAllBooks__single"),
    ].map((bookDOM) => {
      const linkTag = bookDOM.querySelector(".authorAllBooks__singleTextTitle");

      const title = linkTag.textContent.trim();
      const link = linkTag.href;
      const author = bookDOM.querySelector(
        ".authorAllBooks__singleTextAuthor"
      ).textContent;
      const imageURL = bookDOM.querySelector("img").src;
      const rating = bookDOM
        .querySelectorAll(".listLibrary__ratingStarsNumber")[1]
        .textContent.trim();

      return {
        title,
        link,
        author,
        imageURL,
        rating,
      };
    });

    booksXML += bookshelfData
      .map(
        (bookData) => `
        <book>
          <title>${bookData.title}</title>
          <link>${bookData.link}</link>
          <author>${bookData.author}</author>
          <image-url>${bookData.imageURL}</image-url>
          <rating>${bookData.rating}</rating>
        </book>`
      )
      .join("\n");

    nextPageButton = document.querySelector(".page-item.next-page");
    if (!nextPageButton.classList.contains("disabled")) {
      nextPageButton.querySelector("a").click();
      readBooks();
    } else {
      const xml = `<?xml version="1.0" encoding="UTF-8"?><bookshelf>${booksXML}</bookshelf>`;

      const filename = "data.xml";
      const a = document.createElement("a");
      const blob = new Blob([xml], { type: "text/plain" });
      a.setAttribute("href", window.URL.createObjectURL(blob));
      a.setAttribute("download", filename);

      a.dataset.downloadurl = ["text/plain", a.download, a.href].join(":");
      a.click();
    }
  }, 1000);
};

readBooks();