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.
Modernizing Your Frontend Test Strategy: Unit, Integration, and Visual E2E
Why are modern frontend teams moving away from 'too many unit tests' toward Visual E2E? A technical leadership perspective on testing philosophy.
Different Countries, Different Issues: Geo-Visibility Device Analysis for Global Websites
Just because your website loads fast in your office doesn't mean it's flawless globally. Discover location-based rendering errors and how to fix them.
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.