Skills og-image

Generate Open Graph (OG) images and social media preview cards for websites, blog posts, and products. Use when creating social share images, Twitter/X cards, LinkedIn post images, or any visual preview that appears when sharing links on social platforms. Produces properly sized images (1200x630, 1200x675, etc.) with crisp typography and professional layouts.

install

source · Clone the upstream repo

git clone https://github.com/html2png/skills

Claude Code · Install into ~/.claude/skills/

T=$(mktemp -d) && git clone --depth=1 https://github.com/html2png/skills "$T" && mkdir -p ~/.claude/skills && cp -r "$T/og-image" ~/.claude/skills/html2png-skills-og-image && rm -rf "$T"

manifest: og-image/SKILL.md

source content

OG Image Generator

Generate Open Graph and social media preview images via

html2png.dev

Standard Sizes

Platform	Size	Aspect Ratio
Facebook/LinkedIn	1200×630	1.91:1
Twitter/X	1200×675	1.78:1 (16:9)
Twitter Large	1200×600	2:1
Square	1200×1200	1:1

Endpoint

POST https://html2png.dev/api/convert

Example

curl -X POST "https://html2png.dev/api/convert?width=1200&height=630&deviceScaleFactor=2" \
  -H "Content-Type: text/html" \
  -d '<!DOCTYPE html>
<html>
<head>
  <script src="https://cdn.tailwindcss.com"></script>
  <link href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap" rel="stylesheet">
</head>
<body class="flex items-center justify-center" style="width: 1200px; height: 630px; font-family: Inter, sans-serif; background: linear-gradient(135deg, #1e3c72 0%, #2a5298 100%);">
  <div class="text-center text-white px-16">
    <h1 class="text-7xl font-extrabold mb-6 leading-tight">How to Build APIs</h1>
    <p class="text-3xl opacity-90 mb-8">A complete guide to RESTful design</p>
    <div class="flex items-center justify-center gap-4">
      <div class="w-16 h-16 rounded-full bg-white/20"></div>
      <span class="text-xl">By John Doe · 10 min read</span>
    </div>
  </div>
</body>
</html>'

Key Elements

Typography:

Large, bold headline (60-80px)
Readable subheadline (24-32px)
High contrast against background

Layout:

Centered or left-aligned content
Generous padding (60-100px)
Clear visual hierarchy

Backgrounds:

Gradient overlays
Subtle patterns
Brand colors

Images:

Author avatars (circular, 80-120px)
Logos (top corner or centered)
Decorative elements (subtle)

CDN Resources

Fonts:

<link
  href="https://fonts.googleapis.com/css2?family=Inter:wght@400;600;800&display=swap"
  rel="stylesheet"
/>

Icons:

<script src="https://unpkg.com/lucide@latest"></script>

Tips

Always use
```
deviceScaleFactor=2
```
for crisp text
Use
```
delay=1000
```
for font loading
Keep text minimal (3-5 words headline max)
Test at small sizes (images get compressed in feeds)
Use high contrast for readability

Rate Limits

50 requests/hour per IP.