What aspect of software quality does visual testing primarily improve?

Visual testing primarily enhances the visual aesthetics of software by ensuring that the user interface appears as intended across different devices, browsers, and screen resolutions. This type of testing focuses on how visual elements such as layout, color schemes, typography, and images render on the screen, which directly impacts user experience and satisfaction.

By identifying inconsistencies or unexpected changes in the visual presentation of an application, visual testing helps maintain a polished and professional look, which is vital for brand image and user engagement. This focus on visual fidelity enables teams to catch issues that might not be captured by traditional functional testing, where the primary concern is whether the application functions correctly rather than how it looks.

Effective visual testing tools automate the comparison of visual outputs against baseline images, promptly highlighting discrepancies to be addressed. This capability ultimately leads to a more visually appealing product, which can enhance the user's first impression and overall interaction with the application.