Angular performance: NgOptimizedImage, @defer, lazy loading, SSR.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performance --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .claude/skills && cp -r skills-src/curated/angular/performance .claude/skills/angular-performance && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .claude/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performanceType this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performance --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .agents/skills && cp -r skills-src/curated/angular/performance .agents/skills/angular-performance && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .agents/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performance --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/curated/angular/performance .cursor/skills/angular-performance && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .cursor/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/Gentleman-Programming/Gentleman-Skills.git --path curated/angular/performance--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performance --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/curated/angular/performance .gemini/skills/angular-performance && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .gemini/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performanceInstalls for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .github/skills && cp -r skills-src/curated/angular/performance .github/skills/angular-performance && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .github/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install Gentleman-Programming/Gentleman-Skills angular-performance --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/Gentleman-Programming/Gentleman-Skills.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/curated/angular/performance .opencode/skills/angular-performance && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "angular-performance" agent skill from https://github.com/Gentleman-Programming/Gentleman-Skills/tree/main/curated/angular/performance into .opencode/skills/angular-performance/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "angular-performance", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
angular-performanceAngular performance: NgOptimizedImage, @defer, lazy loading, SSR.
Angular Performance is an agent skill from Gentleman-Programming/Gentleman-Skills. Angular performance: NgOptimizedImage, @defer, lazy loading, SSR. Trigger: When optimizing Angular app performance, images, or lazy loading.
Its SKILL.md is about 700 tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Frontend & Design, covering Web performance. It works with Angular. The repository describes itself as: Community-driven AI agent skills for Claude Code, OpenCode, and other AI assistants. Curated patterns and community contributions. The licence is MIT.
Read from SKILL.md and the folder at commit c8036a3. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are typescript and html).
From the folder's file list and the shell code blocks in SKILL.md.
Links to these hosts (documentation or services it may open):
angular.devFrom URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Angular Performance loads about 703 tokens when it runs. Until then it costs about 40 tokens; SKILL.md has 122 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from Gentleman-Programming/Gentleman-Skills at commit c8036a3, republished under its MIT licence (© Gentleman-Programming). 122 words, ~703 tokens.
.claude/skills/angular-performance/SKILL.md (or your agent's skills folder).import { NgOptimizedImage } from '@angular/common';
@Component({
imports: [NgOptimizedImage],
template: `
<!-- LCP image: add priority -->
<img ngSrc="hero.jpg" width="800" height="400" priority>
<!-- Regular: lazy loaded by default -->
<img ngSrc="thumb.jpg" width="200" height="200">
<!-- Fill mode (parent needs position: relative) -->
<img ngSrc="bg.jpg" fill>
<!-- With placeholder -->
<img ngSrc="photo.jpg" width="400" height="300" placeholder>
`
})width and height (or fill)priority to LCP (Largest Contentful Paint) imagengSrc not srcfill image must have position: relative/fixed/absolute@defer (on viewport) {
<heavy-component />
} @placeholder {
<p>Placeholder shown immediately</p>
} @loading (minimum 200ms) {
<spinner />
} @error {
<p>Failed to load</p>
}| Trigger | When to Use |
|---|---|
on viewport | Below the fold content |
on interaction | Load on click/focus/hover |
on idle | Load when browser is idle |
on timer(500ms) | Load after delay |
when condition | Load when expression is true |
<!-- Multiple triggers -->
@defer (on viewport; on interaction) {
<comments />
}
<!-- Conditional -->
@defer (when showComments()) {
<comments />
}// Single component
{
path: 'admin',
loadComponent: () => import('./features/admin/admin').then(c => c.AdminComponent)
}
// Feature with child routes
{
path: 'users',
loadChildren: () => import('./features/users/routes').then(m => m.USERS_ROUTES)
}bootstrapApplication(AppComponent, {
providers: [
provideClientHydration()
]
});| Scenario | Use |
|---|---|
| SEO critical (blog, e-commerce) | SSR |
| Dashboard/Admin | CSR |
| Static marketing site | SSG/Prerender |
| Solution | When |
|---|---|
| Optimize algorithm | First choice always |
| Pure pipes | Cache single result |
| Memoization | Cache multiple results |
computed() | Derived signal state |
NEVER trigger reflows/repaints in lifecycle hooks (ngOnInit, ngAfterViewInit).
© Gentleman-Programming, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in curated/angular/performance of Gentleman-Programming/Gentleman-Skills.
Open the folder on GitHubat commit c8036a3
Angular Performance next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Angular Performance this skillGentleman-Programming/Gentleman-Skills | 657 | — | ~703 | Automated safety check: Pass | MIT | |
| Igniteui Wc Integrate With FrameworkIgniteUI/igniteui-webcomponents | 170 | — | ~1.4k | Automated safety check: Pass | MIT | |
| Angular ArchitectJeffallan/claude-skills | 12k | — | ~1.5k | Automated safety check: Pass | MIT | |
| Angular ArchitectureHoangNguyen0403/agent-skills-standard | 570 | — | ~849 | Automated safety check: Pass | MIT | |
| Angular PerformanceHoangNguyen0403/agent-skills-standard | 570 | — | ~595 | Automated safety check: Pass | MIT | |
| Modern Web GuidanceJetBrains/skills | 363 | 3 repos | ~1.4k | Automated safety check: Pass | Apache-2.0 |
IgniteUI/igniteui-webcomponents
Install and integrate Ignite UI Web Components packages into React, Angular, Vue 3, LitElement, or vanilla JS/HTML apps, detecting the framework and applying framework-specific setup (package…
Jeffallan/claude-skills
Builds Angular 17+ features with standalone components, signals, NgRx state, RxJS patterns and lazy-loaded routing, then checks bundle size and test coverage.
HoangNguyen0403/agent-skills-standard
Standards for Angular project structure, feature modules, and lazy loading.
HoangNguyen0403/agent-skills-standard
Optimization techniques including OnPush, @defer, and Image Optimization.
JetBrains/skills
Search tool for modern web development best practices. An agent skill from JetBrains/skills.
Kilo-Org/kilo-marketplace
Implement routing in Angular v20+ applications with lazy loading, functional guards, resolvers, and route parameters.
Gentleman-Programming/Gentleman-Skills
Core catalog of 8 critical Elixir/Phoenix anti-patterns covering error handling, separation of concerns, Ecto queries, and testing.
Gentleman-Programming/Gentleman-Skills
Creates new AI agent skills following the Agent Skills spec.
Gentleman-Programming/Gentleman-Skills
Angular architecture: Scope Rule, project structure, file naming, style guide.
Gentleman-Programming/Gentleman-Skills
Angular core patterns: standalone components, signals, inject, control flow, zoneless.
Gentleman-Programming/Gentleman-Skills
Angular forms: Signal Forms (experimental) and Reactive Forms.
Gentleman-Programming/Gentleman-Skills
Django REST Framework patterns. An agent skill from Gentleman-Programming/Gentleman-Skills.
Works with
Categories
Angular performance: NgOptimizedImage, @defer, lazy loading, SSR. Angular Performance is an agent skill from Gentleman-Programming/Gentleman-Skills. Angular performance: NgOptimizedImage, @defer, lazy loading, SSR.
Angular Performance fits situations like: tasks that involve Web performance.
Run `npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a claude-code`. Or copy the skill folder (curated/angular/performance in Gentleman-Programming/Gentleman-Skills) into .claude/skills/angular-performance in your project. Claude Code loads it when a task matches its description.
Run `npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a codex`. Or copy the skill folder (curated/angular/performance in Gentleman-Programming/Gentleman-Skills) into .agents/skills/angular-performance in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add Gentleman-Programming/Gentleman-Skills --skill angular-performance -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/angular-performance, .gemini/skills/angular-performance, .github/skills/angular-performance and .opencode/skills/angular-performance in your project.
SKILL.md names no scripts, command-line tools or credentials: Angular Performance is instructions for the agent only.
SKILL.md names 1 domain. As links in the text: angular.dev. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Angular Performance is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 703 tokens (SKILL.md is roughly 2.8k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Angular Performance: Igniteui Wc Integrate With Framework (IgniteUI/igniteui-webcomponents, 170 stars), Angular Architect (Jeffallan/claude-skills, 12k stars), Angular Architecture (HoangNguyen0403/agent-skills-standard, 570 stars) and Angular Performance (HoangNguyen0403/agent-skills-standard, 570 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Gentleman-Programming (a GitHub organization) maintains it in Gentleman-Programming/Gentleman-Skills, which has 657 GitHub stars. The repository holds 23 skills in this directory. The repository was last updated on March 28, 2026.
Source: Gentleman-Programming/Gentleman-Skills on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.
