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Nex Single File Html Demo
Generates premium, single-file HTML landing pages with inline assets, advanced SEO schema, and a hardened CSP.
Free
nex-single-file-html-demo
Example session with this skill installed
Build a one-file demo site for a bakery in Gent. I need it to be static, premium style, with full SEO schema and a tight CSP for my local server.
- Read your context and instructions
- Compiled the nex-single-file-html-demo
- Generated the UI component
Generated index.html. Features:
- Inline CSS with glass-morphism and particle effects.
- JSON-LD @graph for 'Bakery' in Gent.
- Strict CSP excluding Firebase origins.
- Mobile-ready glass nav.
Deploy by copying this file to your web root. No build step required.
nex-single-file-html-demo.tsx
TSX · React component
Example file from a real run - the skill writes it into your workspace.
Connects securely to your tools. The creator never sees your data.
About this skill
The problem
Building high-end client demos usually requires a build step, dependencies, and complex hosting. Developers need a way to ship premium, portable landing pages that require zero installation and deploy via simple file copy.
What it does
- Generates a single, self-contained
index.htmlwith all CSS and JS inlined. - Builds a complete JSON-LD
@graphschema for SEO, AEO, and GEO optimization. - Implements a strict Content-Security-Policy (CSP) meta tag locked to specific origins.
- Includes premium UI features like glass-morphism, custom cursors, and particle ambience.
- Optionally integrates an inline Firebase admin layer for client-side content editing.
Frameworks & tools
Vanilla HTML5, CSS3 with design-token variables, Vanilla JavaScript, JSON-LD, and optional Firebase (Auth, Firestore, Storage).
Why this beats prompting it yourself
Creating a truly portable file that maintains a strict CSP and valid schema graph is tedious and error-prone. This skill automates the boilerplate of premium aesthetics and deep SEO technicals that are difficult to prompt consistently from scratch.
Use cases
- Create high-fidelity pitch demos that run on any static server or local machine.
- Build ultra-lightweight landing pages with advanced schema for search ranking.
- Deploy client-editable prototypes without setting up a full CMS.
- Generate secure, single-page sites with a hardened CSP and no build pipeline.
Known limitations
Not intended for multi-page applications or complex routing. The Firebase layer is for light content editing, not a full-scale CMS replacement.
How to install
Works the same in every agent - Claude, Cursor, Codex, Copilot and 20+ more.
- 1
Download the ZIP
Free skills download straight away. Paid skills unlock right after purchase.
- 2
Unzip into your skills folder
Every agent reads skills from one folder on your machine. Drop the unzipped folder in there.
- 3
Ask your agent to use it
Restart the agent if it was already running. It picks the skill up automatically - no config needed.
Skills folder by agent
Click the path to copy it. Create the folder if it does not exist yet.
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