⚡

Website Speed Test

LOCAL · Browser-Only

Analyze page performance with Google PageSpeed Insights

Enter URL to analyze

Runs a full Lighthouse audit via Google PageSpeed Insights for both mobile and desktop.

What This Tool Measures

Lighthouse Performance Score: A weighted composite score (0-100) based on Core Web Vitals and other performance metrics. 90+ is considered good.
Core Web Vitals: LCP (loading), INP (interactivity), and CLS (visual stability) -- the metrics Google uses for page experience ranking. Where available, real-user field data from the past 28 days is shown alongside the lab run.
Accessibility, Best Practices, and SEO: Additional Lighthouse audits covering WCAG compliance, modern web standards, and search engine optimization.
Improvement Opportunities: Actionable suggestions with estimated time and size savings, prioritized by impact.

·Share recipe

Was this tool helpful?

What is Website Speed Test?

Free online website speed test to check how fast your website loads.

Measures time to first byte (TTFB), DOM content loaded, full page load time, total page size, and number of requests. Enter any URL to test page load time, find slow resources, and get a performance report with actionable optimization suggestions. Useful for spotting bottlenecks that hurt user experience and SEO before they cost you traffic. No signup required.

How to Use Website Speed Test

1Enter the URL of the website to test
2Click Test to measure loading performance
3View the performance metrics and timing breakdown
4Follow the optimization suggestions to improve speed

Frequently Asked Questions

What metrics are measured?

Time to First Byte (TTFB), DOM Content Loaded time, full page load time, total transfer size, number of HTTP requests, and individual resource loading times.

How accurate is this compared to Lighthouse?

This provides real-world loading metrics from a server-side fetch. For comprehensive audits including Core Web Vitals, accessibility, and SEO scores, use Google Lighthouse alongside this tool.

What can I do to improve speed?

Common optimizations: enable compression (gzip/brotli), optimize images (WebP, lazy loading), minimize JavaScript, use a CDN, enable browser caching, and reduce third-party scripts.

What is a good TTFB?

Time to First Byte under 200ms is excellent, under 500ms is acceptable, and over 800ms usually points to a slow server, missing caching, or a database bottleneck. A high TTFB delays everything that follows, so it is one of the first numbers worth improving.

Why does my page size matter for speed?

Total page size and request count drive how long a page takes to download, especially on mobile networks. Large uncompressed images and many separate requests slow the load. The report flags page size and request count so you know whether to optimize assets or reduce requests.

Share this tool

Related Tools

🔗

Dead link checker

Free online broken link checker - find broken links on web pages

SEO

Website seo score

Free online SEO analyzer - analyze any website's SEO score and get actionable improvement tips

📋

Check http headers

Free online HTTP headers checker - view HTTP response headers for any URL

Facebook share preview

Free online open graph preview - preview how your page looks when shared on social media platforms

↪️

Redirect Chain Checker

Free online redirect chain checker - trace HTTP redirect chains and hops

{}

Minify css online

Free online CSS minifier - minify your CSS code to reduce file size and improve load times

Js compressor

Free online javascript minifier - minify JavaScript code to reduce file size and improve load times

👁

Color vision deficiency simulator

Free online color blindness simulator - see how colors appear to people with color vision deficiency

Keep reading: Regex Cheat Sheet and http status codes reference. Doing this in code instead? See the tool chain endpoints.