Free Website Speed Test
Analyze website page load time, performance metrics, and optimization opportunities. Free, fast, and works entirely in your browser with no sign-up required.
Website Speed Test
Analyze your website's loading speed and performance with client-side heuristic scoring.
Client-side estimation only. This tool uses URL pattern analysis and heuristics to generate educational performance estimates. For accurate results, use Google PageSpeed Insights.
Website Speed Test
Understanding the Scores
How it works: This tool analyzes the URL you provide using client-side heuristics:
- HTTPS detection -- checks if your site uses a secure connection
- CDN / edge platform recognition -- identifies known fast hosting providers
- URL structure analysis -- evaluates path depth and query parameters
- File extension analysis -- detects server-side rendering technologies
- Lighthouse-weighted scoring -- applies the same metric weights as Lighthouse v10
Metrics explained:
- FCP -- First Contentful Paint: when content starts appearing
- LCP -- Largest Contentful Paint: when the main content is visible (Core Web Vital)
- TTI -- Time to Interactive: when the page is fully interactive
- CLS -- Cumulative Layout Shift: visual stability (Core Web Vital)
- TBT -- Total Blocking Time: main thread blocking time
These are estimated values based on URL analysis. Actual performance depends on server configuration, page content, third-party scripts, and user device/network. Use Google PageSpeed Insights or Lighthouse for real measurements.
Frequently Asked Questions
What is the Website Speed Test?
The Website Speed Test is a free online tool that analyzes page load times and performance metrics for any website, with recommendations for improvement.
Is the Website Speed Test free?
Yes, the Website Speed Test is completely free with no registration required.
What metrics does it measure?
The Website Speed Test measures page load time, time to first byte, DOM content loaded, largest contentful paint, and other Core Web Vitals metrics.
Is my data safe with this tool?
Absolutely. The Website Speed Test processes everything client-side in your browser. No data is uploaded to or stored on any server. Your content remains private on your device at all times.
Does the Website Speed Test work on mobile devices?
Yes, the Website Speed Test is fully responsive and works on smartphones and tablets. You can use it on any device with a modern web browser -- no app download required.
Do I need to create an account to use this tool?
No account or registration is needed. Simply open the Website Speed Test in your browser and start using it immediately. There are no sign-up walls or usage restrictions.
How do I use the Website Speed Test?
Simply enter your input in the provided field, adjust any settings to your preference, and the tool will process it instantly. You can then copy the result to your clipboard or download it.
Which browsers are supported?
The Website Speed Test works in all modern browsers including Chrome, Firefox, Safari, Edge, and Opera. For the best experience, use the latest version of your preferred browser.
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About Free Website Speed Test
Free Website Speed Test is a free, browser-based tool in our Website Tools collection. Everything runs locally on your device — no uploads, no sign-up, and your data stays private.