The Problem

Creating a polished HTML slide deck requires picking a visual system, wiring content into the right markup, and ensuring the output works across browsers. Teams that build decks programmatically spend time re‑creating layout scaffolding for each project, leading to duplicated effort and inconsistent styling.

What This Does

The repository ships 34 ready‑made slide templates (HTML, JSON metadata, design notes) under templates/. Each template folder contains:

  • template.html – the base markup with placeholders.
  • template.json – a schema describing slots (title, body, images).
  • design.md – styling guidance for agents.
  • Optional deck-stage.js – a small JavaScript helper that injects user data into the HTML.

The runtime helper runtime/deck-stage.js provides a reference implementation that agents can copy or adapt. Utility scripts in scripts/ (build-index.mjs, new-template.mjs) automate index generation (index.json) and scaffold new template folders.

How It Is Wired

Execution starts with one of the two CLI scripts:

  1. scripts/build-index.mjs – reads every templates/*/template.json and writes a consolidated index.json.
  2. scripts/new-template.mjs – creates a skeleton template directory (copies a starter design.md, empty HTML/JSON files).

Both scripts are self‑contained; they import only built‑in Node modules (e.g., fs, path). No internal import graph exists—each of the 13 JavaScript files (runtime/deck-stage.js and the 11 templates/*/deck-stage.js plus the two scripts) has zero import edges, meaning they operate in isolation.

When an external agent wants to render a deck, it:

  • Reads index.json to discover available templates.
  • Loads the chosen templates/<name>/deck-stage.js (if present) or falls back to runtime/deck-stage.js.
  • Calls the exported function (typically renderDeck(data)) which:
  • Parses template.html.
  • Replaces placeholder tokens with the supplied data.
  • Returns the final HTML string.

Because each deck-stage.js is independent, the blast radius of a change is confined to that single file. However, the duplicated 6‑line code blocks across all deck-stage.js files (identified in 11 files) indicate a missed opportunity for a shared helper, which would reduce maintenance risk.

How To Use It

# Clone the repository
git clone https://github.com/moses-y/beautiful-html-templates.git
cd beautiful-html-templates

# Build the master index (required before agents can lookup templates)
node scripts/build-index.mjs

# Example: render a deck using the runtime helper
node -e "
  const { renderDeck } = require('./runtime/deck-stage.js');
  const data = { title: 'Demo', slides: [{content:'Hello'}] };
  console.log(renderDeck(data));
"

To add a new template: run node scripts/new-template.mjs <template-name> and then fill in the generated files (template.html, template.json, design.md).

No package manager lockfile or package.json is present, so the repository relies only on the Node runtime that ships with the host OS.

Real‑World Use

A content‑automation service can import renderDeck from a selected deck-stage.js, feed it structured slide data from a CMS, and stream the resulting HTML directly to a static‑site generator. This eliminates manual slide authoring while preserving brand‑consistent styling.

import { renderDeck } from '../templates/emerald-editorial/deck-stage.js';
const html = renderDeck(cmsArticle);
publishToS3(html);

Code Health & Issues

  • HIGH – Duplicated code blocks – 6‑line repeats across 11 deck-stage.js files. Consolidate into a shared helper.
  • HIGH – Oversized files – templates/editorial-forest/deck-stage.js and templates/emerald-editorial/deck-stage.js each exceed 1,300 lines; split by responsibility.
  • MEDIUM – Empty catch blocks – 11 occurrences silently swallow errors; add logging or rethrow.
  • HIGH – No test suite – 13 source files, zero test files. Add unit tests for each public function.
  • HIGH – No CI pipeline – No .github/workflows or other CI config; introduce a GitHub Actions workflow that runs the test suite on push/PR.

Other hygiene notes: a LICENSE file exists, no Dockerfile, no lockfile, and no committed secrets.

The Bottom Line

The repo offers a rich, ready‑to‑use collection of HTML slide templates with clear folder conventions, making it easy for automation agents to generate decks. Maintenance is hampered by duplicated logic and large monolithic files, and the lack of testing/CI means changes are risky. Teams that need quick visual consistency and can invest in a modest refactor and test harness will find it valuable; otherwise, the codebase may require more upfront work to reach production stability.