Goodreads Librarian Tools is a Chrome add-on developed by Daniel Bratell. This free tool is designed to simplify typical librarian actions on Goodreads, providing users with a range of utility functions and links to book edit pages.

With Goodreads Librarian Tools, users can easily expand a comma-separated list of authors into author fields, saving time and effort. The add-on also auto-generates the "Sort by" field from the book title, streamlining the sorting process.

Additionally, the tool allows users to expand the cover photo on the book edit page, making it easier to read the details. It highlights the most recent book in the combination list, simplifying the process of finding and separating editions. The add-on also displays the work ID for each work on the combine page.

Goodreads Librarian Tools provides warnings for mismatched ISBN10 and ISBN13, ensuring accurate book information. It also alerts users to invalid ISBNs, such as truncated ISBN13s in the ISBN10 field. The add-on auto-generates ISBN13 from ISBN10, preventing inconsistencies between editions.

Other useful features include auto-enabling the "keyword" when writing text in the combine search field, saving users from redoing their search. The tool also prioritizes the three most recently used languages at the top of the language select, reducing scrolling time.

Overall, Goodreads Librarian Tools is a valuable add-on for librarians and avid Goodreads users, simplifying common tasks and enhancing efficiency.