Professor Sloth

Feature Release

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

  • How to Optimize Website Images: The Complete 2025 Guide

    How to Optimize Website Images: The Complete 2025 Guide

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  • Fixing Long Animation Frames (LoAF)

    Fixing Long Animation Frames (LoAF)

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  • Improving Your Interaction to Next Paint (INP)

    Improving Your Interaction to Next Paint (INP)

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  • Trying and failing and trying again

    Trying and failing and trying again

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  • Debugging a Slow Core Web Vital Score

    Debugging a Slow Core Web Vital Score

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  • Measuring Web Performance in 2024: The Definitive Guide

    Measuring Web Performance in 2024: The Definitive Guide

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

    Fix Your First Contentful Paint (FCP): Cheat Sheet

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  • Using First Contentful Paint (FCP)

    Using First Contentful Paint (FCP)

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  • How Hacker News Crushed DavidWalshBlog

    How Hacker News Crushed DavidWalshBlog

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  • Measuring First Input Delay (FID)

    Measuring First Input Delay (FID)

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  • Measuring Largest Contentful Paint (LCP)

    Measuring Largest Contentful Paint (LCP)

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  • Measuring Cumulative Layout Shift (CLS)

    Measuring Cumulative Layout Shift (CLS)

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