Add AI features users love.
Cartoonize, HTML → PDF, and Watermark.
Add standout image and document tools to your site or app without building infrastructure. Use our REST APIs or embed a ready-made Studio. Great for no-code platforms, Shopify stores, SaaS products, and developers.
Built for No-Code, Low-Code, and Custom Apps
Use the APIs from any platform that can make HTTP requests, or embed the Studio with HTML. Great for website builders, Shopify stores, internal tools, automations, and production SaaS.
Works Anywhere
Connect from no-code tools, low-code builders, backend services, automations, or custom code.
Simple REST APIs
Predictable request/response and easy auth. Great for workflows like upload → process → display.
HTML Embed Studio
Drop a ready-made UI into your site with HTML — perfect for quick launches and customer-facing tools.
Transform Photos into Art with AI
Turn any photo into cartoon-style art. Choose from multiple styles and deliver instant results for profiles, storefronts, and customer-facing tools.
Multiple Styles
Popular looks like 3D, anime, comic, and watercolor—great for product workflows and user-generated content.
Fast Results
Ideal for interactive UIs—generate a preview, show it instantly, and keep users engaged.
Simple API
One endpoint. Upload image, pick style, get output. Works from no-code tools or custom code.
Convert HTML, Text, or URLs into Downloadable PDFs
Render HTML like a browser for accurate styling and layout—perfect for invoices, reports, certificates, and printable documents.
- Synchronous response (fast PDF generation)
- Input: HTML, raw text, or a web page URL (mutually exclusive)
- Page formats: A4, Letter, Legal, and more
- Landscape, margins, scale, and background printing
Example: HTML → PDF
curl https://butterflyapi.com/api/v1/run \
-H "Authorization: Bearer sk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"api": "html-to-pdf",
"input": {
"html": "<html><body><h1>Invoice #123</h1></body></html>",
"options": { "format": "A4", "printBackground": true }
}
}'Example: Watermark Image
curl https://butterflyapi.com/api/v1/run \
-H "Authorization: Bearer sk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"api": "watermark",
"input": {
"image_url": "https://example.com/photo.jpg",
"watermark_url": "https://example.com/logo.png",
"watermark_position": "bottom-right",
"watermark_opacity": 0.8,
"watermark_scale": 0.2
}
}'Protect Images with Watermarks
Add a logo watermark with configurable placement, size, and opacity—great for marketplaces, previews, and branded assets.
- Custom watermark image (PNG recommended)
- Corner/center positioning
- Adjustable size and opacity
- Synchronous processing with instant output URL
More AI APIs
State-of-the-art AI models accessible via simple REST endpoints
Image to Image
Transform images using AI with text prompts
Text to Image
Generate images from text descriptions
Background Remove
Remove backgrounds from images automatically
Image Upscale
Upscale images up to 4x resolution
Image Enhance
Enhance image quality and details
Face Restore
Restore and enhance faces in photos
Watermark
Add watermarks to images
Cartoonize
Transform photos into cartoon styles
Image Caption
Generate text descriptions from images
Video Generation
Generate AI videos from images
CineFlow AI
Direct the camera. Generate the shot. 720p cinematic video with directable camera motion.
HTML to PDF
Convert HTML or raw text to downloadable PDF documents
Embeddable AI Studio Widget
Add AI image tools directly to your website with a single line of HTML.
Easy Integration
<iframe
src="https://butterflyapi.com/embed/studio?key=YOUR_API_KEY"
width="100%"
height="600"
frameborder="0"
/>Perfect For
- No-code and low-code platforms adding AI features
- Shopify and e-commerce stores generating branded visuals
- Marketing teams producing assets at scale
- Customer-facing tools that need instant AI results
Use Cases That Ship Fast
From image transformation to document workflows—add features customers actually use.
Cartoon & Profile Tools
Convert user photos into stylized art for profiles, avatars, and shareable content.
E-commerce Assets
Create branded visuals, watermarked previews, and product-friendly images.
PDF Workflows
Generate invoices, receipts, certificates, and reports from HTML templates.
SaaS Integration
Add AI features to your platform without training models or managing infrastructure.
Simple API Integration
// Cartoonize an image
curl https://butterflyapi.com/api/v1/run \
-H "Authorization: Bearer sk_your_api_key" \
-H "Content-Type: application/json" \
-d '{
"api": "cartoon",
"input": {
"image_url": "https://example.com/photo.jpg",
"style": "anime"
}
}'Start Building with ButterflyAPI
Get 100 free credits to experiment with Cartoonize, HTML to PDF, Watermark, and more. No credit card required.
Get Free API Key