Templates / Blog Post Header
Blog Post Header social images
Give every post a sharp, on-brand share image without opening a design tool. Pass the title, author, and date as URL parameters and the card updates itself — perfect for a blog where new posts ship weekly.
Live preview — edit a field and it re-renders. No key needed.
Signed embed URL (sign it with your key — how)
PARAMETERS
Set it with URL parameters.
Every field below is a query parameter on the image URL. Change a value, get a new image — identical parameters return instantly from cache.
| Parameter | Type | Example |
|---|---|---|
title | text | How we built a 10ms cache layer |
subtitle | text · optional | The engineering story behind our fastest feature yet |
author | text | Jane Smith |
date | text | Jun 2026 |
site | text | engineering.example.com |
category | text · optional | Engineering |
EMBED
One tag in your <head>.
Sign the URL with your public key (the docs show how) and drop it in. Crawlers fetch a real image — no build step, no redeploys.