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Speed up a site's loading and responsiveness v1.0.0

Use this resource to speed up the loading and responsiveness of a website

New

  • 423 downloads
  • 232 likes
  • 200 saves

Free

Install with the CLI

In a terminal, from the folder you want:

npx --yes palatekit@latest install web-performance-optimization-3

With no option, the skill goes to ~/.agents/skills/; add --agent claude-code (or codex, cursor…) to target an agent.

First time: connect the CLI with

npx --yes palatekit@latest login

The agent sets a measurement baseline from real-user data and browser traces, then targets the bottlenecks. It changes only the code tied to those measurements, then re-measures to confirm the gain.

Mostly picked by

Updated November 2, 2026

Card for the “Speed up a site's loading and responsiveness” skill

Details

Works in
Install guides
Generates with
Your agent's model
Licence
MIT

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What you get

  • references/MEASUREMENT.md: field and lab measurement protocol
  • references/RUM.md: real-user monitoring
  • SKILL.md: critical rendering path, images, fonts and JavaScript

Good fit for

  • Your page is slow to appear on mobile
  • You need to keep to a performance budget

Not for

    Tags

    • performance
    • speed
    • loading
    • images
    • web vitals

    About

    You say

    “My site is slow on mobile: measure it, find the cause and fix the biggest cost.”

    Card for the “Speed up a site's loading and responsiveness” skill

    Skill published by addyosmani under the MIT license, delivered in its original version.

    Show more

    How to use it

    1. Install the skill in your agent's skills folder
    2. Ask your agent to speed up the loading and responsiveness of a website
    3. Review and adjust the result

    Content preview

    Files

    • LICENSE1.1 KB
    • NOTICE-PALATEKIT.md0.5 KB
    • references/MEASUREMENT.md7.3 KB
    • references/RUM.md3.1 KB
    • SKILL.md13.9 KB

    Origin and licence

    Listed unmodified

    Author
    addyosmani
    Source
    github.com/addyosmani/web-quality-skills/tree/afa8da942115f2961fdbfa80807ea0b232ff6c00/skills/performance
    Licence
    MIT

    Notice

    « performance » (addyosmani, MIT) livré dans sa version d'origine : fiche en français et en anglais par PalateKit.

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