Make your web pages fast on all devices
What is your web page's speed?
Analyzing...
Discover what your real users are experiencing
Core Web Vitals Assessment
Diagnose performance issues
Performance metrics
Performance
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Passed audits (0)
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Best Practices
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals.
Discover what your real users are experiencing
Core Web Vitals Assessment
Diagnose performance issues
Performance metrics
Performance
Opportunities
These suggestions can help your page load faster. They don't directly affect the Performance score.
Diagnostics
More information about the performance of your application. These numbers don't directly affect the Performance score.
Passed audits (0)
Accessibility
These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.
Best Practices
SEO
These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals.
How to Use This Tool
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1
Enter a URL — Type or paste the full web page address (starting with
https://) into the input box above. -
2
Click Analyze — Hit the Analyze button to start the performance and SEO audit. The process usually takes 15–30 seconds.
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3
Switch between Mobile & Desktop — Results are shown separately for Mobile and Desktop. Switch using the tabs at the top of the results.
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4
Read your scores — Each category (Performance, Accessibility, Best Practices, SEO) receives a score from 0 to 100. Higher is better.
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5
Expand audit details — Click any audit item to expand it and view specific recommendations, resource lists, and savings estimates.
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6
Fix & Re-analyze — After implementing improvements, run the tool again to confirm your score has improved.
Score Color Guide
Frequently Asked Questions
What does this SEO Optimization tool analyze?
This tool uses Google's Lighthouse engine to audit your web page across four key areas: Performance (how fast your page loads), Accessibility (how usable it is for all visitors), Best Practices (code quality and security standards), and SEO (on-page search-engine optimization signals).
Why do my Mobile and Desktop scores differ?
Mobile audits simulate a mid-tier Android device on a 4G connection, while Desktop audits simulate a powerful desktop machine on a fast connection. Mobile tests are generally stricter, so lower mobile scores are common. Prioritize mobile improvements since Google uses mobile-first indexing.
How often should I run the audit?
Run the audit whenever you make changes to your site — especially after adding new plugins, images, scripts, or stylesheets. A good practice is to audit at least once a month to catch regressions early.
What is Core Web Vitals?
Core Web Vitals are a set of real-world user experience metrics defined by Google: Largest Contentful Paint (LCP) measures loading speed, First Input Delay (FID) / Interaction to Next Paint (INP) measures interactivity, and Cumulative Layout Shift (CLS) measures visual stability. Google uses these as ranking signals.
Why do scores vary between runs?
Lighthouse scores can vary slightly between runs due to network conditions, server response times, CPU throttling variability, and background processes. For consistent benchmarking, run the tool 3 times and average the results.
What is a good Performance score for SEO?
Google recommends aiming for a Performance score of 90 or above (green). Pages that score in the green range generally have better rankings in Google Search, faster user experiences, and lower bounce rates. A score of 50–89 (orange) means there are meaningful improvements to make.
Can this tool audit pages behind a login?
No. This tool can only audit publicly accessible pages. Pages that require authentication (login screens, dashboards, member areas) cannot be analyzed because the audit engine cannot log in on your behalf.
What's the difference between Opportunities and Diagnostics?
Opportunities are specific optimizations (like compressing images or removing unused CSS) with estimated time savings that directly influence load time. Diagnostics provide additional context about your page's performance characteristics but don't have a direct score impact.
How do I improve my SEO score?
Common improvements include: adding a descriptive <title> tag, writing a
unique meta description, using proper heading hierarchy
(h1–h6), making links crawlable, ensuring text is readable (font
size ≥ 12px), adding alt attributes to images, and having a mobile-friendly
viewport. Expand the SEO audit items for specific recommendations.
Is my data private when I use this tool?
The URL you submit is sent to the Google PageSpeed Insights API for analysis. Google's standard privacy policy applies to that request. No personal data beyond the URL is collected or stored by this tool.