Hindsight is a Chrome add-on designed to enhance the way users search their browsing history. Unlike traditional methods that only allow searches by titles and URLs, Hindsight indexes the text content of every page visited, enabling users to find information by what was actually read. This tool operates locally in the browser, ensuring that all data remains private with no tracking involved. Users can initiate searches through a simple side panel interface, where they can enter keywords or phrases, even if they are misspelled or incomplete.

The add-on features a smart search capability that includes fuzzy matching and natural language processing, allowing for intuitive queries such as "that article about react hooks." Results are displayed with relevant details including the page title, URL, snippet, and visit date. However, it does have some limitations, such as the inability to extract content from PDFs or images, and it does not support cross-device syncing. Overall, Hindsight serves as a valuable tool for those who frequently rely on their browsing history for information retrieval.