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performance-optimization SKILL.md skillA

performance-optimization from mindrally/skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.

Install it, pinned

mdr add mindrally/skills/performance-optimization@git:20261008.7682ca7

Pins git:20261008.7682ca7 in mdr.lock. Pin the fingerprint instead.

Audit grade: A, 17 of 17 checks passed
Kind: SKILL.md skill
Repository: mindrally/skills
Path: performance-optimization/SKILL.md
Versions recorded: 2
Latest version: git:20261008.7682ca7, committed Oct 8, 2026
First version recorded: Jan 23, 2026
Size: 4,626 bytes
Repository stars: 301
License: Apache-2.0

Performance optimization guidelines for web development including server-side rendering, CSS best practices, and JavaScript optimization.

Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.

What the file says

# Performance Optimization

Apply these performance optimization principles when developing web applications, themes, and frontend interfaces.

## Core Performance Principles

- Prioritize server-side rendering as a first principle, as opposed to client-side JavaScript
- Minimize client-side JavaScript to reduce bundle size and improve Time to Interactive
- Optimize for Core Web Vitals: LCP, FID, and CLS
- Measure performance continuously and establish baselines
- Consider performance impact of every architectural decision

## Server-Side Rendering

- Render content server-side whenever possible
- Use streaming rendering for faster Time to First Byte
- Implement proper caching strategies for rendered content
- Avoid blocking resources that delay rendering
- Pre-render static content where applicable

## CSS Best Practices

### Selector Efficiency
- Avoid ID selectors for styling; use classes instead
- Maintain specificity at 0 1 0 where possible
- Avoid deep nesting of selectors (max 3 levels)
- Use BEM or similar naming conventions for clarity
- Prefer class selectors over element selectors

### CSS Organization
- Use CSS variables for colors, spacing, and repeated values
…

Read the whole file at its exact version.

How to install

The exact contents, by fingerprint

mdr add mindrally/skills/performance-optimization@sha256:35fbee42dfe1852a

The line at the top of this page pins the label git:20261008.7682ca7, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.

Badge

[![mdr](https://markdownregistry.com/badge/art_hd22mg7tcaehkwob.svg)](https://markdownregistry.com/a/art_hd22mg7tcaehkwob)

6 badge image fetches in 30 days. What the badge shows.

Versions

The registry has recorded 2 versions of this file, between Jan 23, 2026 and Oct 8, 2026, about one every 258 days.

version	committed	commit	size	audit
git:20261008.7682ca7 latest	2026-10-08	7682ca7	4,626 B	A	view · diff
git:20260123.47f47c1	2026-01-23	47f47c1	4,546 B	A	view

Audit of the latest version

A 17 of 17 checks passed. Fixed automatic checks with no AI involved, so the same checks give the same answer every run.

pass: Frontmatter block present
pass: Frontmatter declares a name
pass: Frontmatter declares a description
pass: Size between 200 bytes and 200 KB (4626 bytes)
pass: No zero-width or bidi control characters
pass: No instruction hidden inside an HTML comment
pass: No link to an exfiltration or paste host
pass: No credential-shaped string
pass: No instruction to send local credentials anywhere
pass: No text hidden with inline styles
pass: No prompt-injection phrasing
pass: No curl or wget piped into a shell
pass: No recursive delete of root, home or parent
pass: No instruction to read or print local credentials
pass: No base64 blob over 200 characters
pass: No link to a raw IP address
pass: No script tag

Source

GitHub

mindrally/skills · 301 stars · license Apache-2.0 · pushed 2026-10-08 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_hd22mg7tcaehkwob
GET https://markdownregistry.com/api/v1/resolve?ref=mindrally/skills/performance-optimization
GET https://markdownregistry.com/api/v1/blob/35fbee42dfe1852afbc6888a7d70194a19611df7019a6b3e2a6a6e60c79dacaa

Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.

Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.

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