The Findbook ISBN Extension is a free Chrome add-on that allows users to conveniently search for books by their ISBN on various online bookstores in the RU-Net. This extension is particularly useful for those who want to find books that are not available in their favorite local bookstore but still want to purchase them in physical form.

With this extension, users can easily search for books by their ISBN on any open webpage. If multiple ISBNs are found, the extension provides the option to choose the desired one. Once a selection is made, the extension opens a new tab with the search results on findbook.ru, allowing users to compare prices and find the best deal.

The Findbook ISBN Extension is a simple and practical tool for book lovers who want to find books at the best prices and expand their options beyond their local bookstores.