How the Image Generation API Works
Design a template
Use the drag-and-drop editor to create your image layout. Mark text, images, and colors as editable fields.
Send data via API
POST your data as JSON to a single endpoint. Only send the fields you want to change.
Get your image
The API returns a finished image (PNG, JPEG, or WebP) in under 2 seconds. No webhooks, no polling.
Example API call
curl -X POST 'https://render.imejis.io/v1/YOUR_TEMPLATE_ID' \
-H 'dma-api-key: YOUR_API_KEY' \
-H 'Content-Type: application/json' \
-d '{
"headline": { "text": "Summer Sale" },
"price": { "text": "$29.99" },
"product_image": { "image": "https://example.com/shoe.jpg" }
}'What You Can Build with an Image API
Social Media at Scale
Generate hundreds of branded social posts from a spreadsheet. Same template, different data, every time.
E-commerce Product Images
Auto-generate product images with price tags, sale badges, and branding from your catalog data.
Dynamic OG Images
Create unique Open Graph images for every page on your site. Better social sharing, zero manual work.
Personalized Emails
Generate header images personalized with each recipient's name, company, or product recommendations.
Why Developers Choose Imejis.io
Image Generation API Pricing
No per-seat charges. No template limits. Pay for what you generate.
Free
$0/mo
100 calls/mo
$0.00/image
Basic
$14.99/mo
1,000 calls/mo
$0.015/image
Pro
$24.99/mo
10,000 calls/mo
$0.0025/image
Unlimited
$69.99/mo
100,000 calls/mo
$0.0007/image
How Imejis.io Compares
| Provider | Starting Price | vs Imejis.io |
|---|---|---|
| Imejis.io | $14.99/mo | — |
| Bannerbear | $49/mo | 69% cheaper |
| Placid | $19/mo | 21% cheaper |
| Creatomate | $54/mo | 72% cheaper |
See the full pricing comparison across 10 providers.
Learn More
What is an Image API?
How image APIs work, what they cost, and when to use one.
How to Generate Images with an API
Step-by-step tutorial with Node.js and Python examples.
API Speed Benchmarks
Real performance data across 7 image generation APIs.
Image CDN vs Image API
When to use a CDN and when you need a generation API.
API Documentation
Code examples in cURL, Node.js, and more.
Supported Components
Text, charts, QR codes, barcodes, ratings, tables, plus live previews and sample JSON.
10 Ways Businesses Use Image APIs
Real-world use cases from e-commerce to social media.
Image Generation API FAQ
What is an image generation API?
An image generation API creates finished images from a template and dynamic data. You design a template once, then send data (text, images, colors) to an endpoint and get back a rendered PNG, JPEG, or WebP. It differs from an AI image API, which generates pictures from text prompts.
How much does an image generation API cost?
Imejis.io starts free with 100 calls per month, then $14.99/mo for 1,000 calls ($0.015 per image), dropping to $0.0007 per image on higher tiers. Most competitors start between $19 and $54 per month.
Do I need webhooks or polling to generate images?
No. Imejis.io returns the finished image directly in the API response, usually in under two seconds. There is nothing to poll and no webhook to configure.
What image formats does the API return?
PNG, JPEG, and WebP. You choose the output format per request.
Is there a free image generation API tier?
Yes. Imejis.io includes 100 free API calls every month, permanently, with no credit card required and no watermarks.
Can an AI agent generate images with Imejis?
Yes. Imejis runs a remote MCP server, so Claude, ChatGPT, or Cursor can design a template and render a real PNG or SVG directly. Your agent already writes the copy. Now it renders the image. See the AI Agents page for setup.