How to Generate OG Images Automatically: The Complete Guide (2026)

June 08, 20266 min read

Open Graph images drive click-through rates on social media. Generating them manually doesn't scale. Here's the complete guide to automated OG image generation in 2026.

Why OG images matter

Pages with custom OG images get 2-3x more clicks on social media than those without. The problem: generating a unique OG image for every post, product, or user manually is impossible at scale.

The approaches

@vercel/og (Satori) — for Next.js

Built into Next.js, runs at the edge, free. Limited to a subset of CSS (flexbox only, no grid). Works great for simple layouts. Breaks down on complex designs.

Puppeteer — self-hosted

Full CSS support, complete control. Cold start penalty (2-5s) is a real problem for per-request generation. Memory-heavy on serverless.

RenderPix — managed API

Full CSS support, ~300-700ms response, native n8n node, batch rendering. $9/mo for 2,000 images. Best balance of features and simplicity.

OG image generation with RenderPix

# Generate OG image from HTML template curl -X POST https://renderpix.dev/v1/render \ -H "X-API-Key: YOUR_KEY" \ -d '{ "html": "<div style=\"width:1200px;height:630px;background:#0f0f0f;font-family:sans-serif;display:flex;align-items:center;padding:80px\"><h1 style=\"color:#fff;font-size:52px\">{{title}}</h1></div>", "vars": {"title": "My Blog Post Title"}, "width": 1200, "height": 630, "format": "png" }'

In n8n: zero-code OG generation

Install n8n-nodes-renderpix, connect your CMS trigger, map your title/description fields to template variables, and every new post gets an OG image automatically.

Choosing the right approach

Next.js + simple layout → @vercel/og
Next.js + complex CSS or non-React → RenderPix
n8n/Make.com workflow → RenderPix (native node)
High volume + full control → Puppeteer

Try RenderPix free — no credit card needed

100 renders/month. Full HTML control. Native n8n node.

Get your free API key →