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179 / PAGES · WATERMARK TEXT · NO SIGNUP

Add Watermark Text Diagonal.

Add Watermark Text Diagonal to any PDF without opening Acrobat. Files leave your machine only for processing; nothing stored after the download link expires.

Drop a PDF here.

Click to pick, or drag files here · .pdf,application/pdf

FREE TIER: 5 / DAYFILE CAP: 25 MBPROCESSED: VERCEL EDGENEED MORE? GO PRO · $9/MO
  1. Upload your PDF
  2. Select pages or specify page range
  3. SnapPDF processes the operation
  4. Download the result
Processed on our servers — files deleted after download

Frequently asked questions

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SNAPPDF API

Automate Watermark Text Diagonal insertion with the API

Integrate this operation into your workflow. REST API with typed SDKs in 5 languages. Generous free tier.

View API docs →See pricing

30-day refund policy on all paid plans