Image Generation APIs: Build Visual Features Without Heavy Infrastructure

Every modern application needs to generate images on the fly — QR codes for payments, social cards for link previews, avatars for user profiles, or placeholder images during development. Instead of running ImageMagick on your servers or managing a rendering pipeline, you can call an API and get the image back in milliseconds.

Why use an image generation API?

Skip the infrastructure — no need to install Sharp, Canvas, or Puppeteer on your servers
Generate QR codes, barcodes, avatars, and social cards with a single HTTP request
Get consistent output across environments without worrying about font rendering or OS differences
Scale instantly — the API handles the rendering load, not your application servers
Support multiple output formats (PNG, SVG, WebP) without format conversion logic

Image Generation APIs

10 APIs available in this category. All included in every plan.

Image Compress API

Compress images with quality control and format conversion

Image Resize API

Resize and crop images with multiple fit modes

Social Card API

Generate Open Graph and Twitter Card preview images

QR Code API

Generate QR codes with custom colors and sizes

Barcode API

Generate barcodes in multiple formats (Code128, EAN-13, etc.)

Favicon API

Extract favicons from any website

Placeholder API

Generate SVG placeholder images with custom sizes and colors

Avatar API

Generate SVG avatars: initials, identicons, and pixel art

Gradient API

Generate CSS and SVG gradients: linear, radial, conic

Pattern Generator API

Generate SVG patterns: dots, lines, hexagons, waves, and more

How to generate images with Van Moose

Get your API key

Sign up at vanmoose.cc and grab your API key from the dashboard. The free tier includes 500 requests/month across all APIs.

Pick the right image API

Choose from QR Code, Barcode, Avatar, Social Card, Placeholder, Gradient, or Pattern Generator depending on your use case.

Make your first request

Send a GET or POST request with your parameters. Most image APIs return the image directly as a binary response, ready to serve or store.

Cache and serve

Images are deterministic — the same input always produces the same output. Cache aggressively with CDN headers to minimize API calls.

Quick example

Image Compress API

curl -X GET \
  "https://imagecompress.vanmoose.cc" \
  -H "Authorization: Bearer vm_live_YOUR_API_KEY"

Replace vm_live_YOUR_API_KEY with your actual API key from the dashboard.

Frequently asked questions

What image formats are supported?+

Most image APIs support PNG and SVG output. Some also support WebP and JPEG. The QR Code and Barcode APIs return PNG by default, while Avatar and Placeholder APIs return SVG for crisp rendering at any size.

Can I customize colors and dimensions?+

Yes. All image generation APIs accept color parameters (HEX values) and dimension parameters (width/height in pixels). The Social Card API also supports custom fonts and layouts.

Is there a size limit for generated images?+

Generated images are typically capped at 4096x4096 pixels. For most use cases (QR codes, avatars, social cards), the default sizes between 200px and 1200px are optimal.

How fast is image generation?+

SVG-based APIs (Avatar, Placeholder, Gradient, Pattern) respond in under 50ms. Raster image APIs (QR Code, Barcode, Social Card) typically respond in 100-200ms.

Start building with Image Generation APIs

Get 500 free requests/month. No credit card required. All 10 APIs in this category included.

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