DeWatermark API Examples

Small, practical examples for removing watermarks from images with the DeWatermark API.

• Use DeWatermark in the browser when you want a quick manual workflow.
• Visit DeWatermark.com for the hosted image watermark remover.
• Try the free dewatermark tool first if you only need occasional cleanup.
• Developers can use the same AI dewatermark workflow through a simple REST API.

This repository is maintained as a lightweight integration reference. It does not include API credentials or any private DeWatermark server code.

API endpoint

POST https://dewatermark.com/api/v1/remove
Authorization: Bearer YOUR_API_KEY
Content-Type: application/json

Request body:

{
  "image": "https://example.com/photo.jpg",
  "mask": "https://example.com/mask.png"
}

Fields:

• image: base64 data URI or image URL.
• mask: base64 data URI or mask URL. White pixels mark the area to remove.

Typical successful response:

{
  "result": "https://replicate.delivery/.../output.png",
  "usage": {
    "used": 42
  }
}

Known error responses:

• 400: missing image or mask field.
• 401: missing or invalid API key.
• 500: server or processing error.

Examples

• curl
• Node.js fetch
• Python requests

Set your API key as an environment variable before running the examples:

export DEWATERMARK_API_KEY="YOUR_API_KEY"

The public API docs currently say to contact justacatbot@proton.me for an API key.

When to use this

This is a good fit for apps that already have a source image and a mask, for example:

• ecommerce catalog cleanup
• batch image restoration workflows
• internal creative tooling
• before/after QA pipelines

Only process images you have the right to edit. Do not use watermark removal to misrepresent ownership or bypass licensing terms.