PDF Tools
Add Watermarks to PDFs via API
Protect your documents with customizable text watermarks. Add "CONFIDENTIAL", "DRAFT", company names, or any text overlay.
Watermark Options
- Text: Any custom text
- Position: Diagonal, center, top, bottom
- Color: Gray, red, blue, black
- Opacity: 10% to 100%
- Font Size: 20 to 200
Use Cases
- Mark confidential documents
- Add "DRAFT" to previews
- Brand documents with company name
- Add copyright notices
- Deter unauthorized copying
- 1 credit per document
API Example
curl -X POST "https://api.chargedapi.com/pdf/watermark?text=CONFIDENTIAL&position=diagonal&color=red&opacity=0.3" \
-H "X-API-Key: your_api_key" \
-F "file=@document.pdf" \
--output watermarked.pdf