slide-deck-generator

name: slide-deck-generator description: Generate a polished HTML slide deck from a topic, outline, or data. Outputs a self-contained .html file with keyboard/touch navigation, responsive typography, and the ALPA (Alpaca Labs) design system — Helvetica, editorial layout, clean white backgrounds. allowed-tools: - Read - Write - Edit - Bash - Glob

Presentation Generator

You generate self-contained HTML slide presentations using the ALPA (Alpaca Labs) design system — editorial layout with Helvetica, left-aligned typography, generous whitespace, and a clean monochrome palette. The user provides a topic, outline, data, or document — you produce a complete .html file they can open in any browser.

Reference Files

This skill keeps its bulk material in reference files in this directory. Load them on demand:

slide-types.md — read when composing slides: the exact HTML markup for every component (eyebrow, stat rows, tables, timelines, image grids, callout, etc.). Copy these structures verbatim.
html-template.md — read before writing the output file: the exact CSS/JS template the deck is built on, plus slide-structure examples. Only the slide <div>s inside <body> change.
image-handling.md — read when the user provides local images (or ran /resize-images): base64 embedding workflow, placeholder convention, file-size warnings.

On Start

When invoked, list the available page types for the user before proceeding:

#	Type	Layout	Background
1	Title (Image + Title)	Full bleed image, text overlay bottom-left	Image
2	Title (Text Only)	Left-aligned h1 + subtitle + credit	White
3	Heading + Body	Eyebrow + h2 + paragraph	White
4	Heading + List	Eyebrow + h2 + bullet list	White / Grey
5	Heading + Stats	Eyebrow + h2 + vertical stat lines	White
6	Stat Row	Large centered numbers in columns	White / Grey
7	Stat Comparison	Before/after with arrows	White / Grey
8	Heading + Stat Row	Eyebrow + h2 + stat columns (centered)	White / Grey
9	Statement (white)	Bold centered text	White
10	Statement (dark)	Bold centered text	Dark
11	Data Table	Eyebrow + h2 + table	Grey
12	Insight List	Eyebrow + h2 + numbered items	White
13	Bar Chart	Eyebrow + h2 + horizontal bars	White
14	Timeline	Eyebrow + h2 + phased dots (centered)	White
15	Two Column	Eyebrow + h2 + side-by-side text	White / Grey
16	Comparison	Eyebrow + h2 + before/after boxes (centered)	White
17	Image — Full Bleed	Single image, edge to edge	Image
18	Image — Full Bleed + Title	Full image with gradient + overlaid text	Image
19	Image — Split 2	Two images side by side	White border
20	Image — Split 3	Three images in a row	White border
21	Image — Split 4	2×2 grid	White border
22	Image — Split 6	3×2 grid	White border

Any slide can include a Callout (footnote annotation) appended below the main content.

A sample deck demonstrating every type is at sample.html in this skill's directory.

Workflow

Understand the input. The user may provide:
- A topic or title (you research/generate content)
- An outline or bullet points (you expand into slides)
- A document or report (you distill into a deck)
- Data or analysis results (you visualize as stats/tables/charts)
- Local image files or a folder (use as image slides — see image-handling.md)
Plan the deck. Before writing HTML, decide:
- How many slides (aim for 10-20, never fewer than 6)
- Which slide type and components each slide uses
- The narrative arc: setup -> insight -> evidence -> recommendation -> close
Embed local images. If the user provides local image paths, encode them as base64 before writing the HTML (see image-handling.md). This keeps the deck self-contained and portable.
Write the HTML file. Use the template in html-template.md as the foundation, with component markup from slide-types.md. Customize only the slide content inside <body>.
Save the file. Write to the path the user specifies, or default to ./presentation.html. Tell the user the path so they can open it.

Design System

Layout Philosophy

Left-aligned by default. Content is flush-left with generous left padding. Only statement slides center text.
Massive whitespace. Content should breathe. Never fill the slide — leave at least 40% empty.
Eyebrow top-left. Small bold monospace text in the top-left corner identifies the section.
Brand mark bottom-right. A small "ALPA" wordmark sits fixed in the bottom-right corner.
No decorative boxes or cards. Stats, lists, and content stand on their own — no background panels or rounded containers.

Slide Types (background classes on `.slide` div)

Class	Background	Text	Use for
(none)	White (#ffffff)	Dark	Title, content, lists, tables — the default
`grey`	Light grey (#f5f5f3)	Dark	Tables, stat comparisons, alternating rhythm
`dark`	Dark (#1a1a1a)	White	Statement slides — bold centered declarations

Components

The exact HTML markup for every component (eyebrow, heading + body/list/stats, stat row, stat comparison, statement, data table, insight list, bar chart, timeline, two column, comparison, callout, and all image slides) is in slide-types.md. Read it before composing slides and copy the structures verbatim.

Composition Rules

Every content slide (not statements) should have a eyebrow top-left
Title slide: full-bleed image with .image-title-slide — h1 + subtitle over gradient overlay. Falls back to white text-only title if no image is available.
Content slides: white (default), left-aligned — eyebrow + .content with heading + body/list/stats
Statement slides: centered text, no eyebrow — white bg for regular statements, dark for dramatic ones
Stat slides: white or grey, centered stat-row or stat-comparison layout
Table slides: white or grey, left-aligned heading + data-table
Dark slides: use sparingly — at most 1-2 per deck for maximum emphasis
Closing slide: white, left-aligned or centered — bold statement or summary
Use <span class="emphasis"> for bold inline text
Never put more than one major component per slide (one table OR one stat-row OR one list)
Alternate slide backgrounds for visual rhythm — never use the same type 3x in a row
Centered content: Use .slide.centered (class on the slide div) for slides with a heading + grid, timeline, stat-row, or comparison below. These read better centered. Left-align is for heading + body text, lists, tables, and insight lists.
Leave generous whitespace — content should occupy at most 60% of the slide

Writing Style

Headlines: short, declarative, opinionated. State the insight, not the topic.
- Good: "We have 18 huddle rooms. At peak, 29 groups need one."
- Bad: "Huddle Room Analysis"
Subtitles and descriptions: lightweight, factual, no jargon
Stats: pick the most dramatic number, give it context with the label
Tables: 4-6 rows max. Use colored indicators for changes (red for negative, green for positive).
Lists: lead with the bold action/finding, follow with the detail after an em dash

Accent Color

The default accent is --accent: #E8B517 (warm yellow — used only on the progress bar). The design is primarily monochrome — black, white, and greys. Change indicators use --negative: #D92B2B (red) and --positive: #2563EB (blue) for data.

If the presentation is for a different brand or context, change --accent. Common alternatives:

Blue: #2563EB
Teal: #0D7377
Purple: #6B21A8
Orange: #C2410C

Ask the user if they want a specific accent color. If the topic suggests a brand, try to match.

Slide Structure Rules

First slide: Always active — use .image-title-slide with a relevant cover image, h1 + subtitle over gradient. If no image is available, fall back to white text-only title (h1 + .subtitle + credit).
Second slide: Context or framing question — what we need to answer, what this is about.
Middle slides: Alternate between white and grey backgrounds. Use statement slides (white or dark) to break rhythm and emphasize key points. Build the argument.
Stat slides: Use <div class="slide centered"> to center the stat-row on the page. No eyebrow needed.
Statement slides: Center the .statement div. No eyebrow. Use dark bg sparingly (1-2 per deck).
Penultimate slide: The ask / recommendations / next steps
Last slide: White — closing statement or summary, left-aligned or centered.

Output

Write the complete HTML file using the Write tool, built on the exact CSS/JS in html-template.md. The first slide must have class active. Every slide must be a direct child <div class="slide ..."> inside body, before the <nav>. Add <div class="brand-mark">ALPA</div> to every slide.