Feature Release

Announcing Unified Web Performance: automatic lab testing, real user monitoring, and Google SEO scores.

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Why We're Different

Features

Lighthouse Performance Testing

Automated website performance testing to find issues and actionable insights.

Real-User Monitoring

Understand how your real visitors experience the performance of your website.

Core Web Vitals

Get your Core Web Vitals in real-time and prevent SEO problems.

Web Resource Performance

Find the slow resources and vendors on your website.

Highlights

CrUX Comparison

Long Animation Frames

Resources

Docs

Developer documentation reference for our agent SDK and APIs.

Partners

Our network of certified web performance experts.

Blog

Read the latest from our engineering and product team.

Events

Meet and engage with our community of performance experts.

Free Tools

Speed Check

Discover how fast your website is for real users.

Keyword Vitals

Learn how web performance drives your SEO keyword ranking.

HTTP Cache Checker

Test how your assets are cached in your users' browser.

Timing-Allow-Origin Test

Check if third-party assets will report their performance.

Customers

Pricing

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Web Performance Blog

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Performance Tools

Articles and reviews about the tools of web performance.

GTMetrix Alternatives: The Best Tools for Website Performance Testing

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Name

Features

Lighthouse Performance Testing

Real User Monitoring

Core Web Vitals

Web Resource Performance

Highlights

Chrome UX Report

Long Animation Frames

Free Tools

Speed Check

Keyword Vitals

HTTP Cache Checker

Timing-Allow-Origin Test

Web Performance Tips

Compliance

Data Processing Agreement

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GTMetrix Alternatives: The Best Tools for Website Performance Testing