A "Back to Top" button is a UI element that allows users to instantly return to the beginning of a page. It is essential for long-form content, significantly reducing manual scrolling and improving accessibility for mobile and mobility-impaired users. Design & UX Best Practices
The button should only appear after a user has scrolled down a significant portion of the page (usually two screens worth or ~200px).
A text label like "Back to Top" is often more effective than just an arrow icon, which can be ambiguous.
Use smooth scrolling to provide visual context, as instant jumping can be disorienting. Implementation Options
Most users expect to find the button in the bottom right corner .