Basics

Discover how visual comparison testing detects layout shifts and UI regressions before they reach users. Explore top tools and best practices.

Learn what visual bugs are, their impact on business, and how to detect and prevent them using visual QA tools like BrowserStack Percy.

Learn what visual QA testing is, why it matters, and explore the best visual QA tools for 2026, including Percy, Applitools, and more.

Visual UI testing detects visual changes across screens and devices. This guide covers how it works and key testing approaches.

Many visual bugs slip past automation. Visual testing adds a safety net by comparing how your website actually looks across browsers.