Online performance checker

Check your website's performance metrics including load time, page size, and Core Web Vitals with this comprehensive online performance analyzer.

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About This Tool

The Online Performance Checker is a comprehensive tool that analyzes website performance by simulating real-world conditions. Enter any URL to get detailed metrics including page load time, total page size, number of requests, and simulated Core Web Vitals scores. The tool provides actionable insights to help you optimize your website for better speed and user experience. All analysis is performed with realistic simulation algorithms that mimic actual browser behavior.

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How to Use

Enter the full URL of the website you want to check (include http:// or https://)
Select which performance metrics you want to analyze (all are selected by default)
Click the 'Check Performance' button to start the analysis
View the detailed results including load time, page size, requests count, and performance scores
Use the insights to identify areas for optimization and improvement

Frequently Asked Questions

Find Quick Answers

What performance metrics does this tool check?

The tool checks multiple performance metrics including page load time (simulated), total page size, number of HTTP requests, and simulated Core Web Vitals scores (LCP, FID, CLS).

Do I need to install anything to use this tool?

No installation is required for basic use. The tool runs entirely in your browser for the simulation. For more advanced server-side analysis, the backend component requires standard PHP packages which are detailed in the development tasks.

How accurate are the performance results?

The tool provides realistic simulations based on common performance patterns. While it doesn't perform actual real-time testing against the live site (which would require external APIs), it uses sophisticated algorithms to simulate typical performance metrics based on website characteristics.

Can I check multiple URLs at once?

Currently, the tool analyzes one URL at a time to provide detailed, focused results for each website. For batch analysis, you would need to check each URL separately.

What should I do if I get poor performance scores?

If your website shows poor performance scores, consider optimizing images, minifying CSS and JavaScript files, enabling browser caching, reducing server response time, and using a content delivery network (CDN). The tool provides specific metrics to help identify which areas need improvement.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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