GTmetrix

Description

GTmetrix combines Google Lighthouse and Web Vitals metrics to provide comprehensive website performance analysis. The tool generates detailed reports including page speed scores, total load size, and number of requests, visualized through interactive waterfall charts. It offers testing from multiple global locations (Vancouver, London, etc.) with optional mobile device simulation. Key features include filmstrip view of progressive rendering, actionable optimization suggestions, and historical performance tracking. While account registration unlocks advanced options, basic analysis requires no signup and provides full reports with recommendations for improving CSS delivery, JavaScript execution, and image optimization. Essential for web developers, SEO specialists, and site owners prioritizing user experience and search rankings through technical performance improvements.

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