M
API Matrix

APITemplate.io API

Photography / API Key Intermediate HTTPS CORS
Varies by plan (check documentation)
77 Score
Grade B
Visit Official Site Compare Alternatives

Overview

APITemplate.io lets you generate images and PDFs on the fly by filling data into pre-designed templates. You design a template in the visual editor, then call the API with your dynamic values and receive a finished image or PDF URL in seconds. It is widely used for certificates, social media cards, and automated invoices.

💡

Beginner Tip

Design your template in the APITemplate.io dashboard first, then note the template_id—you will need it in every API call. Use the Test button in the dashboard to preview the output before writing any code.

Available Data

image URLs in multiple sizes
photographer credit
image dimensions
download link
color data
randomly generated data

Example Response

JSON Response 
{
  "id": "Dwu85P9SOIk",
  "urls": {
    "full": "https://images.unsplash.com/photo-...",
    "regular": "https://images.unsplash.com/photo-...?w=1080",
    "thumb": "https://images.unsplash.com/photo-...?w=200"
  },
  "width": 4000,
  "height": 3000,
  "user": {
    "name": "John Doe",
    "username": "johndoe"
  }
}

Field Reference

status ok on success, error on failure.
download_url Temporary URL to download the generated image or PDF (expires after some hours).
percentage_used Percentage of your monthly generation quota consumed so far.
transaction_ref Unique identifier for this generation request, useful for support tickets.

Implementation Example 

const url = "https://apitemplate.io/";
// Replace headers or query params with the values required by this API.
const response = await fetch(url, {
  headers: {
  "X-API-Key": "YOUR_API_KEY"
  }
});
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

401 Unauthorized The X-API-KEY header is missing or contains an invalid key.
✓ Log in to apitemplate.io, navigate to API Integration, copy your key, and set it in the X-API-KEY header.
template_id not found The template_id does not exist in your account.
✓ Open the Templates page in the dashboard, click on the template, and copy the ID shown in the URL or template settings.
Unexpected field in overrides The name in overrides does not match the field name defined in the template.
✓ In the template editor, click each element to see its exact name, then use that exact string in the overrides array.

Matrix Score Breakdown

🌐 Reachability 30/30
⚡ Speed 5/20
🔒 Security 15/15
🛠 Developer XP 17/20
✓ Reliability 10/15

Partially tested on Apr 5, 2026

Technical Specifications

Auth API Key
HTTPS REQUIRED
CORS YES
Category Photography
Difficulty Intermediate
Verified: 2026-04-04

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