34. Pixel-Perfect Visual Regression & Baseline Comparison

Visual Regression in Playwright Java

import static com.microsoft.playwright.assertions.PlaywrightAssertions.assertThat;
// Full-page visual comparison:
assertThat(page).hasScreenshot("homepage-baseline.png");
// Element-specific visual comparison (e.g. checkout card):
Locator paymentCard = page.locator("#payment-card");
assertThat(paymentCard).hasScreenshot("payment-card-baseline.png");

Handling Dynamic Elements in Visual Tests

Mask dynamic timestamps and random avatar images before comparing:

page.locator(".timestamp-badge").evaluate("node => node.style.visibility = 'hidden'");