DollarWise

Free PDF Watermark Tool — Add Image Watermark to PDF

October 24, 2026 · 2 min read · By the DollarWise team

Protect your documents or brand them in seconds: drop in one or more PDFs plus a watermark image — your logo, a “CONFIDENTIAL” stamp, or a “DRAFT” mark — choose the position, size, opacity, and rotation, and download the watermarked PDFs. The watermark is stamped onto every page with the pdf-lib engine running entirely in your browser, so your files never leave your device.

PDF Image Watermark

Stamp your logo or mark onto every PDF page — opacity, size, rotation.

100% Free Forever No Sign-up No Credit Card Private — files never leave your browser Unlimited Use

1 Add PDFs + watermark image

Drop PDFs here or click to browse — multiple allowed
    Drop watermark image here or click to browse — one image

      2 Watermark style

      Lower = subtler background-style mark.
      Try −30° for a classic diagonal stamp look.
      Keep image aspect ratio
      Off stretches the image to fill the tile (tiled mode).

      3 Apply & download

      Working…

      ✅ Watermarked PDFs

      🎉 Free forever. No sign-up. No credit card. No limits.

      Watermark as many PDFs as you like — everything happens in your browser.

      How it works

      Drop in your PDFs and a watermark image (PNG with transparency works best — your logo, a CONFIDENTIAL stamp, or a DRAFT mark), pick a position preset (center, corners, or tiled across the page), tune the opacity, size, and rotation sliders, then hit Add Watermark. The tool embeds your image and stamps it onto every page with the pdf-lib engine running locally in your browser. Download each watermarked PDF with one click.

      Tip: for the classic diagonal “DRAFT” look, choose Center position, ~25% opacity, and −30° rotation.

      Everyday uses

      • Business — stamp CONFIDENTIAL or company logos on contracts and reports.
      • Creators — watermark sample PDFs, portfolios, and previews before sharing.
      • Legal — mark exhibits and drafts clearly on every page.
      • Real estate & agencies — brand property brochures and proposals.
      • Teachers — stamp answer keys as “DO NOT DISTRIBUTE” before printing.

      Privacy note: watermarking happens entirely in your browser with pdf-lib — your documents and images never leave your device.