Facebook Post Image template

The facebook-post template renders a social image as a PNG. POST a JSON payload to the endpoint below and you receive a CDN URL in the response.

Endpoint

POST https://app.html2img.com/api/v1/templates/facebook-post
X-API-Key: <your-api-key>
Content-Type: application/json

Authentication uses the X-API-Key header. See the authentication docs for details on issuing and rotating keys.

Inputs

The full set of inputs the template accepts:

Defaults

Defaults applied automatically when not overridden in the request:

Code examples

curl -X POST https://app.html2img.com/api/v1/templates/facebook-post \
  -H "X-API-Key: YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"title":"Doors open Saturday \u2014 first 50 guests get a free print","subtitle":"Join us at the studio launch from 11am to 6pm.","eyebrow":"GRAND OPENING","cta":"RSVP at studioink.co/launch","background_color":"#1E3A8A","accent_color":"#F59E0B"}'

<?php
$response = \Illuminate\Support\Facades\Http::withHeaders([
    'X-API-Key' => 'YOUR_API_KEY',
])->post('https://app.html2img.com/api/v1/templates/facebook-post', ['title' => 'Doors open Saturday — first 50 guests get a free print', 'subtitle' => 'Join us at the studio launch from 11am to 6pm.', 'eyebrow' => 'GRAND OPENING', 'cta' => 'RSVP at studioink.co/launch', 'background_color' => '#1E3A8A', 'accent_color' => '#F59E0B']);

$url = $response->json('url');

const response = await fetch('https://app.html2img.com/api/v1/templates/facebook-post', {
  method: 'POST',
  headers: {
    'X-API-Key': 'YOUR_API_KEY',
    'Content-Type': 'application/json',
  },
  body: JSON.stringify({
    "title": "Doors open Saturday \u2014 first 50 guests get a free print",
    "subtitle": "Join us at the studio launch from 11am to 6pm.",
    "eyebrow": "GRAND OPENING",
    "cta": "RSVP at studioink.co/launch",
    "background_color": "#1E3A8A",
    "accent_color": "#F59E0B"
}),
});

const { url } = await response.json();

import requests

response = requests.post(
    'https://app.html2img.com/api/v1/templates/facebook-post',
    headers={'X-API-Key': 'YOUR_API_KEY'},
    json={'title': 'Doors open Saturday — first 50 guests get a free print', 'subtitle': 'Join us at the studio launch from 11am to 6pm.', 'eyebrow': 'GRAND OPENING', 'cta': 'RSVP at studioink.co/launch', 'background_color': '#1E3A8A', 'accent_color': '#F59E0B'},
)

url = response.json()['url']

Looking for a fuller integration sketch in your language? The usage guides cover PHP, Laravel, Rails, Python, JavaScript, React and Vue.

Response

A successful render returns:

{
 "success": true,
 "id": "abc123",
 "url": "https://i.html2img.com/abc123.png",
 "credits_remaining": 1234,
 "template": "facebook-post"
}

The url field is a CDN URL for the rendered PNG. credits_remaining tracks your monthly quota. Shared response fields are documented in the API parameters reference.

Errors

The template endpoint returns the following error responses:

422 Validation failed

Returned when one or more inputs fail validation. The errors object lists field-specific messages.

{
 "success": false,
 "error": "validation_failed",
 "errors": {
 "title": ["The title field is required."]
 }
}

404 Template not found

Returned with {"code": "template_not_found"} if the slug is not registered. Check the template list for current slugs.

401 Unauthorised

Missing or invalid API key. See the authentication docs.

429 Too many requests

You have hit the rate limit or used your monthly credits. The pricing page covers higher-volume plans.

Related templates

Other templates in the social media category:

• Instagram square post - Bold square images sized for the Instagram feed
• Instagram story - Vertical 9:16 covers for Instagram and TikTok stories
• LinkedIn post - Polished share images sized for LinkedIn feed posts
• Pinterest pin - Vertical 2:3 pins with strong typography that stand out in feed
• Tweet mockup card - Render a tweet-style card from supplied data — avatar, body, image, metrics
• Twitter post - Generate share-ready images sized for Twitter/X posts
• YouTube thumbnail - High-contrast 16:9 thumbnails optimized for click-through

Browse by category

A starting point from each of the other template categories. The templates index lists every reference page.

Business and commerce: Business card , Certificate of completion

Content and marketing: Blog hero image , Code screenshot

See the Facebook Post Image marketing page for sample renders and use cases.