Purpose-lock your documents

Add repeating watermarks to your IDs, contracts, and sensitive files so they can only be used for their intended purpose.

100% client-side — your files never leave your browser

How it works

1

Upload

Drop your image or PDF — it stays in your browser.

2

Type your purpose

"ONLY VALID FOR car rental - March 2026"

3

Download

Get your watermarked document instantly.

100% Private
No server uploads
Images + PDFs

Your privacy, guaranteed

ValePara runs entirely in your browser. Your documents are never uploaded to any server. All watermarking happens locally using Canvas API and pdf-lib — no backend, no tracking, no data collection.

MCP

Built for AI agents

Watermark documents programmatically via MCP. Install once, use from any AI assistant.

terminal
$ npx valepara-mcp
watermark-image

JPG, PNG, WebP

watermark-pdf

All pages

detect-document

Edge detection

Claude Desktop
{
  "mcpServers": {
    "valepara": {
      "command": "npx",
      "args": ["-y", "valepara-mcp"]
    }
  }
}
Claude Code
claude mcp add valepara-mcp \
  -- npx -y valepara-mcp
View documentation