How to Generate Certificates from HTML Templates with an API

June 08, 20266 min read

Certificate generation at scale — hundreds or thousands of unique certificates from a single HTML template — is a perfect job for an HTML rendering API.

Overview

This guide covers everything you need to know about how to generate certificates from html templates with an api.

Getting started with RenderPix

# One API call. That's all. curl -X POST https://renderpix.dev/v1/render \ -H "X-API-Key: YOUR_KEY" \ -H "Content-Type: application/json" \ -d '{ "html": "<div style=\"width:1200px;height:630px;background:#0f0f0f;color:#fff;display:flex;align-items:center;justify-content:center;font-size:48px\">Hello, RenderPix</div>", "width": 1200, "height": 630, "format": "png" }' --output card.png

RenderPix is a managed HTML-to-image API starting at $9/mo. 100 free renders/month, no credit card required. Native n8n node, batch rendering, template variables.

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

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