Use Case — Social Media Automation

Generate social images
at scale, automatically.

Send HTML, get pixel-perfect PNG. No design tools, no manual exports, no IP rate limits. Built for pipelines that run every hour — not just once.

Start Free — 100 renders/mo View API Docs

// Schedule this. Run it every hour. RenderPix handles the rest.

const image = await fetch('https://renderpix.dev/v1/render', {

  method: 'POST',

  headers: {

    'X-API-Key': process.env.RENDERPIX_KEY,

    'Content-Type': 'application/json'

  },

  body: JSON.stringify({

    html: buildPostHTML(todayData), // your dynamic content

    width: 1080,

    height: 1350, // Instagram portrait

    format: 'png'

  })

});

// Returns pixel-perfect PNG buffer. Upload to S3, post to Instagram, done.

How it works

Three steps. Fully automated.

No headless browser to maintain, no Puppeteer crashes at 3am, no IP blocks when your cron job fires.

01 —

Build your HTML template

Use any CSS framework, custom fonts, dynamic data. Full Tailwind CDN support. Your design, your control.

02 —

POST to RenderPix

One API call with your HTML and dimensions. Authenticated with your API key — no IP-based limits, no surprise rate blocks.

03 —

Receive pixel-perfect PNG

Server-side Chromium renders your HTML exactly as a real browser would. Upload to S3, CDN, or post directly.

Who uses this

Built for automated content pipelines.

If you're generating more than a handful of images, manual tools don't scale. RenderPix does.

📅

Scheduled content pipelines

Run a cron job every hour. Generate today's post, quote, or announcement as a branded image automatically.

cron + API

🛍️

E-commerce product visuals

Generate product announcement images from your catalog data. New arrivals, price drops, promotions — all automated.

bulk generation

📊

Data-driven social posts

Turn live data — analytics, rankings, scores — into shareable visuals. Updated automatically as data changes.

dynamic content

🏢

Multi-client agencies

Manage content for multiple brands from one pipeline. Different templates, same reliable rendering API.

multi-tenant

Why not free tools

Free is fine for one-off. Not for production.

IP-based rate limits, no API key, no SLA — free tools break exactly when your pipeline needs them most.

	RenderPix	Free alternatives
Authenticated API key	✓ Yes	✗ No
Rate limit type	Plan-based, predictable	IP-based, unpredictable
Server-side Chromium	✓ Real browser rendering	~ Client-side canvas
Usage dashboard	✓ Yes	✗ No
Service continuity	Paid = stays online	No commitment
Scheduled job safe	✓ Yes	✗ Risk of IP blocks

Generate social imagesat scale, automatically.