What is the intention of EPUB files regarding screen layouts?

The intention of EPUB files is to allow for flexible screen adaptation and adjustable font sizes. EPUB, which stands for Electronic Publication, is designed to be a responsive format that can adjust its layout based on the screen size and capabilities of the device being used to view it. This means that users can change the font size for better readability, and the text will reflow accordingly to fit the screen, enhancing accessibility for individuals with different visual needs.

This adaptability is crucial because it ensures that content is accessible on a variety of devices, from smartphones to tablets and e-readers, without sacrificing usability. By allowing flexibility in presentation, EPUB files support an inclusive reading experience that can cater to diverse user preferences and is compliant with accessibility standards.

In contrast, maintaining fixed formatting across devices would limit users’ ability to customize their reading experience, which is not the goal of the EPUB format. Providing high-resolution images only would not address the text's accessibility and adaptability, while limiting content to text only would ignore the multimedia capabilities that EPUB files can offer.