Page Speed Analyzer

Analyze page load speed and Core Web Vitals

* Demo mode — simulated results. For real data, use Google PageSpeed Insights API.

Page Speed Analyzer - Analyze Website Speed and Core Web Vitals Online

Analyze your website's page load speed and Core Web Vitals with our free online tool. Get a Performance Score, LCP, FID, CLS, TTFB, and actionable optimization opportunities. Essential for SEO and web performance.

Key Features

Overall Performance Score (0-100)

Full Core Web Vitals analysis

First Contentful Paint (FCP)

Largest Contentful Paint (LCP)

Cumulative Layout Shift (CLS)

First Input Delay (FID)

Time to First Byte (TTFB)

Speed Index (SI)

Optimization opportunities with estimated savings

Detailed diagnostics

Why Does Page Speed Matter for SEO?

Page speed is not just a Google ranking factor — it directly impacts business metrics. According to Google research, 53% of mobile users abandon a page if load time exceeds 3 seconds. Core Web Vitals became an official ranking signal in 2021, affecting both desktop and mobile rankings. Slow pages increase bounce rate, reduce time on site, lower conversions, and negatively impact brand perception.

Benefits

•Improve Google rankings with better Core Web Vitals
•Reduce bounce rate significantly
•Increase conversion rate and revenue
•Better user experience on all devices
•Data-driven decisions for performance optimization

How to Use Page Speed Analyzer

1Enter the full URL of the page to analyze (including https://)
2Click 'Analyze' and wait for the analysis to complete
3Review the overall Performance Score — aim for 90+ (green)
4Check Core Web Vitals metrics against Google's Good thresholds
5Review Opportunities — improvement suggestions sorted by impact
6Implement optimizations by priority and retest

Frequently Asked Questions

What is a good Performance Score?

According to Google Lighthouse: 90-100 is Good (green), 50-89 is Needs Improvement (yellow), 0-49 is Poor (red). Aim for 90+ on both mobile and desktop.

Why does the result differ from Google PageSpeed Insights?

This tool runs in demo mode with simulated data. For accurate real-world results, use Google PageSpeed Insights at pagespeed.web.dev.

How do Core Web Vitals affect SEO?

Core Web Vitals are an official Google ranking signal since June 2021. Pages with good Core Web Vitals are prioritized in rankings, especially when other factors are equal.

What is LCP and what is a good score?

LCP (Largest Contentful Paint) measures how long it takes for the largest visible element to load. A good LCP is under 2.5 seconds. Between 2.5s and 4s needs improvement. Over 4s is poor.

How do I improve my page speed score?

Key improvements include: serving images in WebP format, removing render-blocking scripts, enabling text compression (gzip/brotli), using a CDN, reducing unused JavaScript and CSS, and optimizing server response time (TTFB).

Related Keywords

page speed analyzerwebsite speed testcore web vitals checkerlighthouse scoreperformance analyzergoogle pagespeedweb performancelcp fid cls

Hợp tác ngay với Tấn Phát Digital

Chúng tôi không chỉ thiết kế website, mà còn giúp doanh nghiệp xây dựng thương hiệu số mạnh mẽ. Cung cấp dịch vụ thiết kế website trọn gói từ thiết kế đến tối ưu SEO. Hãy liên hệ ngay với Tấn Phát Digital để cùng tạo nên những giải pháp công nghệ đột phá, hiệu quả và bền vững cho doanh nghiệp của bạn tại Hồ Chí Minh.

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