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Image Watermark API

Add professional text or image watermarks to protect your visual content. Customize position, opacity, size, and style.

API Endpoint

POST /v1/watermark

Parameters

Name	Type	Required	Description
url	string	Yes	URL of the image to watermark
text	string	No	Watermark text (if text watermark)
position	string	No	Position: center, top-left, bottom-right, etc.
opacity	number	No	Watermark opacity (0-100)

Quick Example

curl -X POST "https://api.toolcenter.dev/v1/watermark" \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"url": "https://example.com/photo.jpg", "text": "© My Company", "position": "bottom-right", "opacity": 50}' \
  --output watermarked.png

Features

Text and image watermark support
Adjustable position, opacity, and rotation
Multiple watermark types (diagonal, tiled, corner)
High-quality output preserving original resolution
Supports PNG, JPEG, and WebP formats

Use Cases

Protect stock photos from unauthorized use

Brand product images for e-commerce

Add copyright notices to portfolio images

Watermark documents before sharing

Start Using Image Watermark API for Free

500 free API calls per month. No credit card required.

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