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e2409ff | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | # posterskill
A [Claude Code](https://docs.anthropic.com/en/docs/claude-code) skill that generates print-ready conference posters from your paper. Point it at your Overleaf source and project website — it extracts the content, downloads figures, fetches logos, and builds an interactive poster you can edit in your browser. Single HTML file, no build step.
The key idea: the poster is a **live editor**. Drag dividers to resize columns and rows, click cards to swap or move them, adjust font sizes — then feed your layout back to Claude for further refinement. Iterate between the browser and Claude until it's perfect.
## Quick start
```bash
git clone git@github.com:ethanweber/posterskill.git poster && cd poster
git clone https://git.overleaf.com/YOUR_PROJECT_ID overleaf # your paper
```
Optionally add reference posters for style matching:
```bash
cp ~/some_poster.pdf references/
```
Then start Claude Code and run the skill:
```bash
claude
```
```
/make-poster
```
It reads your paper, fetches your project website, matches your reference style, and generates a `poster/` directory. Open `poster/index.html` in a browser to preview and edit.
## What you get
The poster is a **self-contained HTML file** with a built-in visual editor:
- **Drag column dividers** to resize columns
- **Drag row dividers** to resize cards within columns
- **Click-to-swap** cards (click one diamond handle, then another)
- **Move/insert** cards to any position (click a handle, then click a drop zone)
- **A-/A+** buttons to adjust font size globally
- **Preview** mode to see exactly how it will print
- **Save / Copy Config** to export your layout as JSON
No npm, no build step, no server. Just open `index.html` in Chrome.
## Inputs
| Input | Source | Required |
|-------|--------|----------|
| Paper | `overleaf/` directory | Yes |
| Project website | URL (asked at runtime) | Yes |
| Reference posters | `references/` directory | No |
| Author website | URL for brand/style matching | No |
| Formatting specs | Text or conference instructions URL | Asked if missing |
| Logos | Downloaded from your website to `poster/logos/` | Auto |
| Git repo | URL to push the poster to | Optional |
## Editing workflow
1. Claude generates the first draft and opens it in your browser
2. Drag dividers, swap cards, adjust font size in the browser
3. Click **Copy Config** in the toolbar
4. Paste the JSON back to Claude — it updates the defaults
5. Repeat until you're happy
6. Click **Preview** to verify, then print to PDF (margins: none, background graphics: on)
## How it works under the hood
The poster uses a React app (loaded via CDN) with:
- **`CARD_REGISTRY`** — defines each card's content (title, color, JSX body)
- **`DEFAULT_LAYOUT`** — defines column structure and card ordering
- **`DEFAULT_LOGOS`** — institutional logos for the header
- **`window.posterAPI`** — programmatic API for automation
Claude uses [Playwright](https://playwright.dev/) to:
- Measure image aspect ratios and assign them to matching columns
- Auto-optimize column widths to minimize whitespace
- Take screenshots and visually verify the layout
- Generate PDFs at full print resolution
## Programmatic API
Available in the browser console or via Playwright:
```js
posterAPI.swapCards('method', 'results') // swap two cards
posterAPI.moveCard('quant', 'col1', 2) // move card to position
posterAPI.setColumnWidth('col1', 280) // resize column (mm)
posterAPI.setCardHeight('method', 150) // set card height (mm)
posterAPI.setFontScale(1.5) // adjust text size
posterAPI.getWaste() // measure whitespace
posterAPI.getLayout() // get current layout
posterAPI.getConfig() // get full config JSON
posterAPI.resetLayout() // restore defaults
```
## Example
See the [Fillerbuster poster](http://ethanweber.me/fillerbuster-poster) ([repo](https://github.com/ethanweber/fillerbuster-poster)) for an example built with this skill.
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