Fantlab Searcher is a Chrome add-on developed by GBV that serves as a unified search tool for the bibliographic website, Lab of Fantastic Literature. With this add-on, users can conveniently search for various categories of information in one place. By simply clicking on the extension icon, a window will open where users can enter their search query and choose a category. The search is divided into the following categories: authors and works in the website's database, publications, visitors on the site by username, forum posts, author columns, and a full site search using external search engines.

Additionally, Fantlab Searcher offers the ability to search for selected text using keyboard shortcuts from Alt+1 to Alt+7 in the corresponding categories. This add-on provides a seamless and efficient way for users to access and search the Lab of Fantastic Literature's extensive database.