Simple URL Blocker is a free Chrome extension designed to enhance web browsing safety by allowing users to control web access through dynamic URL blocking. It utilizes the declarativeNetRequest API to intercept network requests at a granular level without altering page content, ensuring a lightweight and efficient performance. Users can easily define domains and specific routes to block, with the ability to modify these rules in real time, facilitating an adaptable browsing experience.

The extension operates using a service worker that maintains blocking rules stored locally, ensuring user privacy and compliance with Chrome security policies. It does not inject scripts or collect user data, focusing solely on request-level blocking. With its straightforward configuration and instant application of rules, Simple URL Blocker provides a practical solution for users looking to manage their web access effectively.