Favicon Generator API

Complete Favicon
Package in One API Call

Generate all 6 favicon sizes, ICO file, and webmanifest from a single image. Production-ready package in seconds.

Quick Start

cURL
curl -X POST "https://api.cullx.com/v1/favicon" \
  -H "x-api-key: YOUR_API_KEY" \
  -F "image=@logo.png"

# Response includes ZIP with:
# - favicon.ico (16x16, 32x32, 48x48)
# - favicon-16x16.png
# - favicon-32x32.png
# - apple-touch-icon.png (180x180)
# - android-chrome-192x192.png
# - android-chrome-512x512.png
# - site.webmanifest
# - instructions.html
JavaScript
const formData = new FormData();
formData.append('image', fileInput.files[0]);

const response = await fetch(
  'https://api.cullx.com/v1/favicon',
  {
    method: 'POST',
    headers: {
      'x-api-key': 'YOUR_API_KEY'
    },
    body: formData
  }
);

const { data } = await response.json();
// data.zip = base64 ZIP file
// data.files = list of generated files
// data.zipSize = total size in bytes

Generated Files

favicon.ico

Legacy ICO format (16x16, 32x32, 48x48)

favicon-16x16.png

Browser tab icon

favicon-32x32.png

Desktop shortcut icon

apple-touch-icon.png

iOS home screen (180x180)

android-chrome-192x192.png

Android app icon

android-chrome-512x512.png

PWA splash screen

site.webmanifest

PWA configuration

instructions.html

HTML snippet to paste

Who Uses This?

🎨 Design Agencies

Deliver complete favicon packages to clients. Save hours of manual resizing. Professional output every time.

🏗️ Website Builders

Let users upload one logo, automatically generate all required favicon formats. Shopify/Webflow-like experience.

💼 Brand Management Platforms

Maintain brand consistency across platforms. Generate app icons, favicons, and PWA assets from brand logos.

⚙️ CI/CD Pipelines

Automate favicon generation in build process. Update favicons when brand assets change.

Generate Favicons Instantly

Free tier: 100 generations/month