Add AI features users love.
Cartoonize, HTML → PDF, Watermark and More.
Ship AI-powered image and document tools without building infrastructure. Use our REST APIs or embed a ready-made studio into your site or app — perfect for no-code tools, Shopify stores, SaaS platforms, 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, and production SaaS.
Works Anywhere
Connect from no-code/low-code tools, backend services, automations, or custom code.
Simple REST APIs
Predictable request/response and easy auth. Great for workflows like upload → process → display.
Embeddable Studio
Drop a ready-made UI into your site with HTML — perfect for quick launches and customer-facing tools.
Cartoonize Photos into AI Art Styles
Turn any photo into stylized 3D, anime, comic, watercolor and more. Great for storefronts, profile tools, creator apps, and customer-facing experiences.
Multiple Styles
Consistent results across popular looks for real product workflows.
Fast Outputs
Great for interactive UIs—generate, preview, and ship instantly.
Easy to Integrate
Connect from no-code tools or custom code with minimal setup.
Convert HTML, Text, or URLs into Downloadable PDFs
Render HTML exactly like a browser using a headless engine—accurate CSS, fonts, and layout. Ideal for invoices, reports, certificates, tickets, and printable documents.
- Synchronous response (fast PDF generation)
- Input: HTML markup, raw text, or a web page URL
- Page formats: A4, A3, A5, Letter, Legal, Tabloid
- Landscape support, margins, scaling, 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,
"margin": { "top": "20mm", "right": "20mm", "bottom": "20mm", "left": "20mm" }
}
}
}'Tip: You can also pass text or url (mutually exclusive).
Example: Image Watermark
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_scale": 0.2,
"watermark_opacity": 0.8,
"watermark_position": "bottom-right"
}
}'Supports PNG watermark transparency • Instant synchronous result (output URL).
Protect Images with Configurable Watermarks
Add your logo or watermark image with adjustable scale, opacity, and position. Ideal for marketplaces, preview images, branded product photos, and copyrighted media.
- Custom watermark image (PNG recommended)
- Position: center, corners
- Adjustable size (scale) and opacity
- Synchronous processing with instant output URL
- Great for batch watermark workflows
Embeddable AI Studio Widget
Add AI tools directly to your website builder or landing page with a single line of HTML.
One-line Embed
<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 without servers
- Shopify and e-commerce stores generating branded visuals
- Marketplaces creating previews, art styles, and watermarks
- Document workflows (HTML invoices → PDF downloads)
Use Cases That Ship Fast
Build real features for customers—without training models or managing infrastructure.
Creator Tools
Cartoonize photos, generate shareable visuals, and add fun AI experiences users love.
Invoices & Reports
Generate PDFs from HTML templates for billing, certificates, receipts, and printable downloads.
Marketplaces
Protect images with watermarks, create preview assets, and maintain brand consistency.
No-Code Products
Launch new AI features inside your platform using connectors and ready-to-use endpoints.
Developers
Integrate via REST quickly. Great for prototypes, MVPs, and production workflows.
Growth & Marketing
Generate branded images and PDFs (lead magnets, certificates, deliverables) automatically.
More APIs
Explore additional endpoints for image generation, enhancement, and more.
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
FAQ
Quick answers for no-code builders, e-commerce, SaaS teams, and developers.
Can I use ButterflyAPI with no-code or low-code platforms?
Yes. Any platform that can send HTTP requests can call the APIs. You can also embed the Studio widget into your pages with HTML.
Do you support HTML to PDF from a URL?
Yes. The HTML to PDF API accepts HTML markup, raw text, or a URL (mutually exclusive inputs).
Is Watermark synchronous?
Yes. The Watermark API is synchronous and returns an output URL when complete.
Do you have documentation and integrations?
Yes—use the Docs for endpoints and examples, and the Integrations page for setup guides.
How do credits work?
Credits are charged per call depending on the API. You can see pricing details on the Pricing page and in each API page.
Ship AI Features Faster
Start with Cartoonize, add HTML to PDF for documents, and protect images with Watermark—using APIs or a simple embed.