Zoom for Firefox is a free web development extension designed to improve the zooming experience on web pages. This lightweight tool allows users to customize zoom levels from 1% to 400%, making it particularly beneficial for individuals with visual impairments. Key features include a zoom slider, mouse scroll zooming, and the ability to save specific zoom settings for individual websites. The extension also offers options to zoom all open tabs simultaneously and manage zoom settings at both domain and page levels.

Additional functionalities include the ability to display zoom percentages in the interface, a right-click menu for quick access to zoom options, and an adjustable magnifying glass feature. The extension enhances video viewing by resizing video players, ensuring a more enjoyable experience. With its comprehensive set of features, Zoom for Firefox is a valuable tool for anyone looking to optimize their web browsing experience.