はてなNG is a free Chrome add-on designed to enhance user experience on the はてな platform by allowing users to create custom filters. This tool enables users to block unwanted entries, comments, and stars based on specified criteria, ensuring a more tailored and enjoyable browsing experience. It supports filtering by NG addresses, NG words, and NG accounts, effectively eliminating distractions and unwanted content from the user's view.

The add-on is built specifically for the はてな website and its bookmark pages, relying on the site's design as of NovemberFuture updates are planned to introduce features such as displaying the number of blocked items, importing and exporting NG lists, and a memory function for NG lists. However, users should note that changes to the はてな site design may affect the add-on's functionality.