Blog
Engineering insights, technical SEO practices, and product updates from the Crawlens team.
Core Web Vitals 2026: Advanced Strategies to Improve the INP Metric
Learn from experts how to optimize INP by eliminating unnecessary re-render processes in Next.js and React (SSR, SSG) projects.
The Hidden Costs of Building In-House Test Infrastructure with Playwright/Puppeteer
We explore the unseen server and maintenance costs of building an in-house visual testing system, comparing it with SaaS alternatives (Build vs Buy).
How to Catch Silent UI Bugs Caused by CSS and Tailwind Updates
Learn how to catch visual UI bugs and CSS regressions that escape manual testing with automated Visual Testing methodologies.
How to Catch Technical SEO Disasters Before Googlebot Does
Learn how to instantly catch critical SEO errors like accidentally deleted H1 tags or broken canonical links with Crawlens monitoring tools without losing your rankings.
A Technical Guide to Integrating Visual Testing into Your CI/CD Pipeline
Learn the technical architecture of using GitHub Actions and GitLab to intercept bugs with Visual Testing and failing the build before reaching production.
How to Perform Visual Testing on Pages with Dynamic Content
Learn Masking and Tolerance strategies to flawlessly test constantly changing dates, profile avatars, and real-time stock numbers on your screens.