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Web Performance Optimization

Checked
jarmen423·vlatest·testing

Helps with web development, performance optimization, optimization as part of building frontend UIs and user experiences workflows.

Repository

Install on your platform

Showing Claude Code. One command installs this skill into any of the agents below.

  1. 1

    Run this in your project

    terminal
    $ npx skills add jarmen423/skills --skill web-performance-optimization --full-depth -a claude-code

  2. Uses the open-source skills CLI and needs Node.js. Add -g to install it for your user instead of this project.

What we know about this skill

Publisher

jarmen423

Taken from the source listing. We haven't verified who controls this account.

Install target

Live repository

Not pinned. Installing fetches whatever the repository holds at the time you run the command.

No human has reviewed this code. The checks below are a static scan of the files at one commit — nobody has run this skill or judged whether it works. A skill runs with whatever access you give your agent, so read the source before you install it.

Automated safety checks

scanned

This skill passed all 6 checks. We read its files at one commit and looked for the things that make a skill dangerous to run — not for whether it works.

  • Declares what it does: passed

    SKILL.md parses and declares a name and a description.

    SKILL.md exists, its frontmatter parses, and it declares a name and a description.

  • No undeclared network calls: passed

    Makes no network calls.

    Every host the skill dials — from its scripts, its config endpoints or the commands it tells the agent to run — is either well-known package and API infrastructure or declared in its own frontmatter. Links in documentation are not counted.

  • No obfuscated payloads: passed

    No encoded or obfuscated payloads.

    No base64, hex or compressed blob is decoded and then executed, and no encoded shell commands.

  • No credential access: passed

    Reads no keys, tokens, keychains or credential files.

    Neither the code nor the SKILL.md instructions read SSH keys, cloud credentials, keychains, token stores, browser cookie databases or dotfiles that hold secrets.

  • No pipe-to-shell installers: passed

    No pipe-to-shell or download-and-run installers.

    No `curl … | sh` pattern, in the code or in the instructions, that runs code fetched at run time.

  • Pinned to a commit: passed

    Scanned jarmen423/skills at d016f7d2c7.

    The exact upstream commit SHA that was scanned is recorded, so the result refers to specific bytes.

Commit
d016f7d2c7
Manifest
downloaded-skills/backend-infra/web-performance-optimization/SKILL.md
Scanned
1 file, 633 lines
This is a static scan, not a review. It reads the skill's files; it does not run them, and it cannot tell you whether the skill is any good or whether the code does what its description says. A skill runs with whatever access you give your agent.
What each check looks for →

About this skill

What it does

This skill optimizes websites for faster loading times and improved user experience. It analyzes website code, identifies bottlenecks, and suggests or implements changes to reduce page load duration. The goal is to deliver a smoother browsing experience by minimizing latency and improving overall performance metrics.

When to use it

  • Slow Website: A site takes too long to load, leading to high bounce rates and frustrated users.
  • Mobile Optimization: Need to improve website speed on mobile devices with limited bandwidth.
  • SEO Improvement: Page speed is a ranking factor; this skill can help boost search engine visibility.
  • Large Images/Assets: The site uses many large images or other assets that are slowing down the page load.

Key capabilities

  • Website code analysis
  • Bottleneck identification
  • Performance metric optimization
  • Image compression and optimization
  • Asset delivery optimization

Example prompts

  • "Analyze this website [URL] for performance bottlenecks."
  • "Optimize the images on [URL] to reduce page load time."
  • "Suggest ways to improve the mobile loading speed of [URL]."

Tips & gotchas

The skill's effectiveness depends on access to the website’s code and assets. It may require adjustments or further manual implementation of suggested changes for optimal results.