UI Styling
Ohh-889/skyroc
Create beautiful, accessible user interfaces with shadcn/ui components (built on Radix UI + Tailwind), Tailwind CSS utility-first styling, and canvas-based visual designs.
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files.
Install CSS Minification
$ npx skills add thedaviddias/Front-End-Checklist --skill css-minification -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install thedaviddias/Front-End-Checklist css-minification --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/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/css-minification .claude/skills/css-minification && 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 "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .claude/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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/thedaviddias/Front-End-Checklist/tree/main/skills/css-minificationType 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 thedaviddias/Front-End-Checklist --skill css-minification -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install thedaviddias/Front-End-Checklist css-minification --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/css-minification .agents/skills/css-minification && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .agents/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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 thedaviddias/Front-End-Checklist --skill css-minification -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install thedaviddias/Front-End-Checklist css-minification --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/css-minification .cursor/skills/css-minification && 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 "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .cursor/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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/thedaviddias/Front-End-Checklist.git --path skills/css-minification--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 thedaviddias/Front-End-Checklist --skill css-minification -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install thedaviddias/Front-End-Checklist css-minification --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/css-minification .gemini/skills/css-minification && 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 "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .gemini/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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 thedaviddias/Front-End-Checklist css-minificationInstalls 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 thedaviddias/Front-End-Checklist --skill css-minification -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/css-minification .github/skills/css-minification && 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 "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .github/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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 thedaviddias/Front-End-Checklist --skill css-minification -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install thedaviddias/Front-End-Checklist css-minification --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/thedaviddias/Front-End-Checklist.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/css-minification .opencode/skills/css-minification && 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 "css-minification" agent skill from https://github.com/thedaviddias/Front-End-Checklist/tree/main/skills/css-minification into .opencode/skills/css-minification/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "css-minification", 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.
Facts
- Skill name
css-minification- GitHub stars
- 74k
- Token cost
- ~415 tokens
- SKILL.md length
- 158 words
- Files
- 2 (incl. references)
- Skills in repo
- 390
- Repo updated
- First seen
- Licence
- MIT
At a glance
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files.
- Reviewing stylesheets
- SKILL.md covers Quick Reference, Check, Fix and Explain, plus 1 more section
- Instructions only: no scripts, shell commands, URLs or credentials in SKILL.md
- Component styles
What it does
CSS Minification is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files. Check the rendered layout across breakpoints and interaction states before proposing a fix.
Its SKILL.md is about 420 tokens, which your agent loads only when the skill is triggered. The skill folder holds 2 other files, including reference files (for example `references/rule.md`).
It sits in Frontend & Design, covering CSS and styling and Responsive design. The repository describes itself as: 🗂 The essential checklist for modern web development, for humans and AI agents. The licence is MIT.
When your agent uses it
- Reviewing stylesheets
- Component styles
- Responsive behavior related to Minify all CSS files
Example prompts
- “/css-minification”
What it can do on your machine
Read from SKILL.md and the folder at commit e8d14d0. It shows what the files ask for, not the result of running them.
Tool permissions
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.
Runs code
No scripts in the folder and no shell commands in SKILL.md.
From the folder's file list and the shell code blocks in SKILL.md.
Network
Links to these hosts (documentation or services it may open):
frontendchecklist.io
From URLs in SKILL.md, links to its own repository left out.
Credentials
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Context cost
CSS Minification loads about 415 tokens when it runs, and up to ~4.6k if it reads all its reference files. Until then it costs about 54 tokens; SKILL.md has 158 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.
Safety
Auto-check passed
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.
SKILL.md
The full file from thedaviddias/Front-End-Checklist at commit e8d14d0, republished under its MIT licence (© thedaviddias). 158 words, ~415 tokens.
Download SKILL.mdSave it as
.claude/skills/css-minification/SKILL.md (or your agent's skills folder). This skill also uses 1 other file; get the full folder from GitHub.- name
- css-minification
- description
- Use when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files. Check the rendered layout across breakpoints and interaction states before proposing a fix.
- metadata.category
- css
- metadata.priority
- high
- metadata.difficulty
- beginner
- metadata.estimatedTime
- 15
- metadata.source
- frontendchecklist.io
- metadata.url
- https://frontendchecklist.io/rules/css/css-minification
Minify all CSS files
Unminified CSS wastes bandwidth with whitespace, comments, and verbose syntax—minification delivers the same styles in significantly fewer bytes.
Quick Reference
- Enable minification in build tool (Vite, webpack, etc.)
- Use cssnano or lightningcss for PostCSS pipelines
- Typical reduction: 20-40% file size savings
- Combine with Gzip/Brotli for maximum compression
Check
Verify that all CSS files are minified in production to reduce file size, eliminate whitespace, and improve page load performance.
Fix
Set up CSS minification in your build process using tools like cssnano, CleanCSS, or built-in framework minification to compress CSS files.
Explain
Explain how CSS minification improves website performance by reducing file sizes, decreasing bandwidth usage, and speeding up page load times.
Code Review
Review stylesheets, component styles, and responsive states related to Minify all CSS files. Flag exact selectors, declarations, or breakpoints that violate the rule in the rendered UI.
For full implementation details, code examples, and framework-specific guidance,
see references/rule.md.
Rule page: https://frontendchecklist.io/rules/css/css-minification
© thedaviddias, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Files
SKILL.md and 1 other file (references) in skills/css-minification of thedaviddias/Front-End-Checklist.
- SKILL.md
- references/rule.md
Open the folder on GitHubat commit e8d14d0
Compare with similar skills
CSS Minification 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 |
|---|---|---|---|---|---|---|
| CSS Minification this skillthedaviddias/Front-End-Checklist | 74k | — | ~415 | Automated safety check: Pass | MIT | |
| UI StylingOhh-889/skyroc | 795 | 13 repos | ~2.5k | Automated safety check: Pass | MIT | |
| Frontend Design Routercode-yeongyu/oh-my-openagent | 70k | — | ~5.3k | Automated safety check: Pass | Custom licence | |
| Refero Designreferodesign/refero_skill | 295 | — | ~5.3k | Automated safety check: Pass | MIT | |
| Tailwind CSS Patternsever-works/ever-works | 158 | 3 repos | ~1.6k | Automated safety check: Notes | AGPL-3.0 | |
| Good CSSvojtaholik/good-css | 120 | — | ~1.2k | Automated safety check: Pass | MIT |
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Related
Categories
Questions about CSS Minification
What does CSS Minification do?
A skill your agent uses when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files. CSS Minification is an agent skill from thedaviddias/Front-End-Checklist. Use when reviewing stylesheets, component styles, and responsive behavior related to Minify all CSS files.
When should I use CSS Minification?
CSS Minification fits situations like: reviewing stylesheets; component styles; responsive behavior related to Minify all CSS files.
How do I install CSS Minification in Claude Code?
Run `npx skills add thedaviddias/Front-End-Checklist --skill css-minification -a claude-code`. Or copy the skill folder (skills/css-minification in thedaviddias/Front-End-Checklist) into .claude/skills/css-minification in your project. Claude Code loads it when a task matches its description.
How do I install CSS Minification in Codex?
Run `npx skills add thedaviddias/Front-End-Checklist --skill css-minification -a codex`. Or copy the skill folder (skills/css-minification in thedaviddias/Front-End-Checklist) into .agents/skills/css-minification in your project. Codex loads it when a task matches its description.
Can I use CSS Minification in Cursor, Gemini CLI or GitHub Copilot?
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add thedaviddias/Front-End-Checklist --skill css-minification -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/css-minification, .gemini/skills/css-minification, .github/skills/css-minification and .opencode/skills/css-minification in your project.
What does CSS Minification need to run?
SKILL.md names no scripts, command-line tools or credentials: CSS Minification is instructions for the agent only.
Does CSS Minification access the network?
SKILL.md names 1 domain. As links in the text: frontendchecklist.io. This is read from the text; nothing was executed.
Is CSS Minification safe to install?
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.
What licence does CSS Minification use?
CSS Minification is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
How many tokens does CSS Minification use?
About 415 tokens (SKILL.md is roughly 1.7k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full. Its references folder adds about 4.2k tokens, read only when the agent opens those files.
What are the alternatives to CSS Minification?
Skills that share tags, products or a category with CSS Minification: UI Styling (Ohh-889/skyroc, 795 stars), Frontend Design Router (code-yeongyu/oh-my-openagent, 70k stars), Refero Design (referodesign/refero_skill, 295 stars) and Tailwind CSS Patterns (ever-works/ever-works, 158 stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
Who maintains CSS Minification?
thedaviddias (a GitHub user) maintains it in thedaviddias/Front-End-Checklist, which has 74,398 GitHub stars. The repository holds 390 skills in this directory. The repository was last updated on October 6, 2026.
Source: thedaviddias/Front-End-Checklist on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.