Tweeks is a Firefox extension designed for web development and customization, allowing users to modify websites through small scripts known as 'tweeks.' Users can either create their own modifications using simple language or install popular modifications shared by the community. This functionality includes options such as removing YouTube Shorts from feeds, hiding AI-generated content from Google searches, and adding personalization features on platforms like Twitter. Additionally, users can implement price history trackers for Amazon deals, enhancing their browsing experience.

The extension operates locally within the browser, ensuring that modifications only apply to the chosen sites. Users can toggle tweaks on and off, adjust them based on feedback, and view or edit the complete script code at any time. Tweeks also supports importing existing userscripts from other platforms, catering to power users seeking advanced customization options. This subscription-based tool is a valuable asset for anyone looking to enhance their web experience.