Marcin Dudek

WP-Cron checks for scheduled tasks on every page load and makes an HTTP request to itself. Here’s why that causes random slowdowns and how to fix it in 5 minutes.

Every guide tells you to increase WP_MEMORY_LIMIT. None of them tell you how to find what’s actually eating your memory. Here’s a diagnostic workflow that gives you real answers.

Core Web Vitals are Google’s metrics for measuring real-world user experience. They directly impact your search rankings. In 2026, the three metrics that matter are Largest Contentful Paint (LCP), Interaction to Next Paint (INP), and Cumulative Layout Shift (CLS). Largest Contentful Paint (LCP): Under 2.5 Seconds LCP measures how long it takes for the largest … Read more

WordPress shortcodes have been around since version 2.5. They’re everywhere — page builders use them, contact form plugins use them, even some themes rely on them for basic layout. But do they actually slow down your site? The short answer: shortcodes themselves are nearly free. What’s expensive is the code they execute. Let me show … Read more

Hotjar is one of the most popular behavior analytics tools for WordPress. Heatmaps, session recordings, feedback polls — it gives you visibility into how users actually interact with your site. But every third-party script has a cost, and Hotjar is no exception. Here’s what Hotjar actually loads, how much it impacts performance, and what you … Read more