Professor Sloth

Feature Release

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

  • GTMetrix Alternatives: The Best Tools for Website Performance Testing

    GTMetrix Alternatives: The Best Tools for Website Performance Testing

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  • 5 Tips To Make Google Fonts Faster

    5 Tips To Make Google Fonts Faster

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  • How to Optimize Website Images: The Complete 2025 Guide

    How to Optimize Website Images: The Complete 2025 Guide

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  • Unified Web Performance: Real User Monitoring and Automatic Lighthouse Testing

    Unified Web Performance: Real User Monitoring and Automatic Lighthouse Testing

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  • Fixing Long Animation Frames (LoAF)

    Fixing Long Animation Frames (LoAF)

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  • Request Metrics and Perforator - Combining RUM and Load Testing

    Request Metrics and Perforator - Combining RUM and Load Testing

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  • What are Long Animation Frames (LoAF)?

    What are Long Animation Frames (LoAF)?

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  • The Chrome UX Report: Why Real Data Matters

    The Chrome UX Report: Why Real Data Matters

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  • Launching Resource Performance Monitoring

    Launching Resource Performance Monitoring

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  • Trying and failing and trying again

    Trying and failing and trying again

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  • Frontend vs Backend Performance: Which is Slower?

    Frontend vs Backend Performance: Which is Slower?

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  • What is a 'Rage Click'?

    What is a 'Rage Click'?

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  • What Is Time to Interactive? A Comprehensive Guide

    What Is Time to Interactive? A Comprehensive Guide

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  • Announcing Custom Metadata Reports & Filters

    Announcing Custom Metadata Reports & Filters

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  • Debugging a Slow Core Web Vital Score

    Debugging a Slow Core Web Vital Score

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  • Google Analytics 4 Has Me So Frustrated, We Built Our Own Analytics Service

    Google Analytics 4 Has Me So Frustrated, We Built Our Own Analytics Service

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  • Our Super Friendly AI Sloth that Analyzes Your Performance Data

    Our Super Friendly AI Sloth that Analyzes Your Performance Data

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  • Measuring Web Performance in 2024: The Definitive Guide

    Measuring Web Performance in 2024: The Definitive Guide

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  • Explaining Performance to Non-Technical Stakeholders

    Explaining Performance to Non-Technical Stakeholders

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  • How To Read Flame Charts and Percentiles

    How To Read Flame Charts and Percentiles

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  • Synthetic Testing and Real User Monitoring

    Synthetic Testing and Real User Monitoring

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  • Fix Your First Contentful Paint (FCP): Cheat Sheet

    Fix Your First Contentful Paint (FCP): Cheat Sheet

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  • Tutorial: Monitoring Your Core Web Vitals

    Tutorial: Monitoring Your Core Web Vitals

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  • How Hacker News Crushed DavidWalshBlog

    How Hacker News Crushed DavidWalshBlog

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  • The Limitations of Lighthouse

    The Limitations of Lighthouse

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  • Vital Web Performance

    Vital Web Performance

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  • Privacy and Ethical Web Analytics

    Privacy and Ethical Web Analytics

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  • Measuring Largest Contentful Paint (LCP)

    Measuring Largest Contentful Paint (LCP)

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  • Using the Beacon API

    Using the Beacon API

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