ARTICLES

Practical writing on UI testing for React and Next.js — from the team behind Crawly. No thought leadership. Just the tradeoffs, the fixes, and the tools that hold up.

  1. UI TESTING9 min read

    Free UI Testing Tools for React and Next.js in 2026

    Nine genuinely free tools for testing React and Next.js UIs in 2026 — Playwright, Cypress, RTL, Vitest, Storybook, Crawly, BackstopJS, Lost Pixel, Selenium.

  2. UI TESTING8 min read

    Why Your React UI Tests Are Flaky (and How to Fix It)

    Nine causes of flaky React tests and the exact fixes: async waiting, stable selectors, isolated state, controlled data, mocked networks, and disabled animations.

  3. UI TESTING7 min read

    What Is Record-and-Replay UI Testing? A Practical Guide for 2026

    How record-and-replay UI testing works, what it catches, and how it compares to writing Playwright, Cypress, or Selenium tests.