HTML Portal Generator

SkillFiles & storage

Convert a codebase into a self-contained HTML portal app for ingestion into AI application systems. Produces a single deployable HTML file with embedded CSS, JS, and data.

Available today. Use it from your connected AI after setup.

No other account needed.

Connect ahel once, and every AI you use reads what you have installed.

Then ask your AI: use the HTML Portal Generator skill

What this skill tells your AI

The instructions your AI receives, as published by athola/skrills in skills/html-portal-generator/SKILL.md and read by ahel’s review.

Convert any codebase into a single, self-contained HTML portal application. The output is one .html file with embedded styles, scripts, and data that works offline, on file:// protocol, and can be uploaded into AI application portals.

When to Use

You have a codebase (CLI tool, library, API, framework) and need an interactive HTML representation of its functionality
The HTML will be uploaded into a smart AI portal or application integration system
You need all features to work standalone without a running server
You want users to explore, validate, analyze, and interact with the product from a browser

Process

Follow these phases in order. Each phase builds on the previous.

Phase 1: Codebase Analysis

Understand what the product does before writing any HTML.

Read project documentation: README, CLAUDE.md, architecture docs, changelogs
Identify core crates/packages: Map each module's purpose and public API
Catalog user-facing features: CLI commands, API endpoints, configuration options
Extract data structures: Response types, configuration schemas, enum values
Find existing UI code: Dashboards, templates, stylesheets (reuse their design language)

Produce a mental inventory:

Feature list (what the product does)
Data catalog (what entities/types exist)
Command/API reference (how users interact)
Visual identity (colors, fonts, layout patterns from existing UI)

Phase 2: Reference Analysis (if provided)

If the user provides a reference HTML app:

Read the first and last ~3KB to understand structure (large files may be minified)
Identify the design pattern: CSS variables, layout system, component structure
Note the interaction model: controls bar, status bar, grid layout, tab navigation
Extract the color palette and typography from CSS custom properties

Phase 3: Architecture Design

Design the portal as a single-page app with tab navigation.

Required structural elements:

Sticky header with product name, version badge, and summary stats
Tab navigation bar for switching between views
Main container with max-width for readability
Sticky status bar footer with links to docs/repo
Toast notification system for user feedback

View planning - map each product feature to a view:

Feature Type	View Pattern
Entity browsing (skills, packages, endpoints)	Card grid with search/filter/sort and detail panel
Validation/checking	Split editor (textarea input) and results panel
Analysis/metrics	Input, stat cards, and bar charts
Configuration/creation	Form inputs, live preview, and download
Format conversion	Side-by-side input/output with target selector
Reference docs (commands, APIs)	Searchable/filterable list with copy-on-click
Status/compatibility	Matrix grid or table
Dashboard/overview	Stat cards, quick actions, and recent items

Every view must work 100% standalone. No external API calls required. Embed demo data. Add optional live-server connection as a bonus.

Phase 4: Data Embedding

Convert real product data into JavaScript arrays embedded in the HTML.

Scan the actual codebase for entities (skills, commands, endpoints, types)
Extract metadata from source files (frontmatter, doc comments, type definitions)
Generate realistic validation states based on actual product rules
Include failure reasons as tooltip/detail text so users understand why things pass/fail
Store as const arrays in the <script> block - no external JSON files

For large datasets (100+ items), use a build script to extract and format the data rather than hand-writing it.

If the product has local files users might want to scan:

Add a "Scan Local" button using the File System Access API (showDirectoryPicker)
Walk directories recursively, parse file frontmatter/headers
Replace the embedded data with live-scanned results
Store full file content on scanned items for downstream analysis

Phase 5: Implementation

Build the HTML file following these rules:

Single-file architecture:

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Product - Portal</title>
  <style>/* All CSS here */</style>
</head>
<body>
  <!-- All HTML here -->
  <script>/* All JS here, wrapped in IIFE */</script>
</body>
</html>

CSS requirements:

Use CSS custom properties (:root { --bg: ...; }) for theming
Support dark mode (default) and light mode via @media (prefers-color-scheme: light)
Reuse the product's existing color palette if it has one
Mobile-responsive with @media (max-width: ...) breakpoints
Style scrollbars, focus states, and transitions

JavaScript requirements:

Wrap everything in an IIFE: (function() { 'use strict'; ... })();
No inline onclick handlers - use addEventListener exclusively
Clipboard operations must fall back to document.execCommand('copy') for file:// protocol
Every click should produce visible feedback (toast, navigation, highlight)
Autocomplete/datalist for name inputs that reference the embedded data
Tab navigation via data-view attributes and .active class toggling

Interactivity checklist - every element the user can see must do something when clicked:

Cards/list items: select, show detail, or navigate
Buttons: perform action with toast feedback
Reference items: copy to clipboard on click
Status indicators: show tooltip with explanation on hover
External links: open in new tab with target="_blank" rel="noopener"
Quick actions: run in-browser if possible, otherwise copy CLI command and link to docs

Phase 6: Feature Implementation Patterns

Entity Browser (the main catalog view):

- Search input (filters by name and description)
- Source/category dropdown filter
- Quality/status dropdown filter
- Sort selector (alpha, by source, by status)
- Card grid with: name, source badge, description, validation tags
- Validation tags with hover tooltips showing failure reasons
- Detail panel (sticky sidebar) with full metadata on click
- Export button (download as JSON)
- Local scan button (File System Access API)

Validator:

- Target selector (individual CLI or "All")
- Textarea for pasting content
- Validate button - runs client-side validation logic
- Autofix button - actually modifies content:
  - Fills missing frontmatter fields
  - Converts names to kebab-case
  - Scaffolds body sections if too short
  - Adds target-specific fields (e.g., globs for Cursor)
- Quality score panel (0-100 with visual ring)
- Download button for the validated/fixed file
- Load Sample button with realistic example content

Token/Size Analyzer:

- Name input with datalist autocomplete from catalog
- Load button to pull content from catalog by name
- Textarea for content
- Stat cards: tokens, words, lines, characters
- Progress bar with percentage (label outside bar for small values)
- Size category with color coding
- Optimization suggestions list

Format Converter:

- Source format selector
- Target format selector
- Convert button (single target)
- Convert All button (generates all formats with tab switcher)
- Download button
- Side-by-side input/output layout

Creator/Builder:

- Form fields for metadata (name, description, version, deps)
- Target-specific fields shown/hidden based on selection
- Body textarea with placeholder template
- Live preview panel (pre element)
- File path display showing where to save for each CLI
- Dependency graph visualization
- Download and Send-to-Validator buttons

Reference views (commands, tools, APIs):

- Search input
- Category filter
- Each item shows: name/command, description, usage guidance
- Click to copy, with toast confirmation
- Usage guidance paragraph below each item explaining when/how to use it

Dashboard:

- Stat cards row (total items, categories, etc.)
- Quick Actions panel:
  - In-browser actions (green "runs here" badge): actually execute
  - CLI-only actions (muted "CLI only" badge): copy command and link to docs
- Supporting info panels with clickable items
- Recent items grid linking to the browser view

Phase 7: Quality Checks

Before delivering, verify:

JS syntax: node -e "new Function(scriptContent)" parses without error
All tabs work: Each data-view has a matching id="view-..." element
No emdashes: Replace all — with - (AI slop reduction)
No dead clicks: Every visible element does something on click
Clipboard works on file://: All copy operations use the execCommand fallback
Tooltips on status indicators: Hover explains why something passed/failed
Responsive: Views stack on mobile
Open in browser: open filename.html and manually test each tab

Phase 8: Iteration

The user will test and request changes. Common requests:

"X doesn't do anything when I click it" - Add click handler with visible feedback
"Information is missing" - Add data fields, tooltips, or guidance text
"It should use my actual data" - Scan real files and embed or add local scan
"Autofix doesn't change anything" - Make it fix more issues, scaffold content
"The percentage doesn't show" - Move labels outside narrow bars
"Link to docs" - Add target="_blank" links to product documentation

Output

A single .html file (typically 60-120KB) that:

Works by double-clicking in Finder/Explorer
Works on file:// protocol in any browser
Optionally connects to a live server for real-time data
Optionally scans local files via browser directory picker
Can be uploaded directly into AI application portals

Signals

GitHub stars: 69
Forks: 10
Last commit: Sep 2026

Advanced

Catalog kind: skill
Gateway key: html-portal-generator
Source: github.com/athola/skrills

github.com/athola/skrills

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