DollarWise

Free PDF Watermark Tool — Add Text Watermark to PDF Online

October 18, 2026 · 3 min read · By the DollarWise team

Mark drafts, protect previews, and brand shared documents with a diagonal text watermark stamped across every page. Type any text — DRAFT, CONFIDENTIAL, SAMPLE, your company name — then tune the angle, size, opacity, and color, or tile it across the page like professional review copies. Everything runs locally with pdf-lib; your files never leave your browser.

PDF Text Watermark

Stamp diagonal text watermarks across PDF pages — angle, opacity, color, and tiled or single layout, all private.

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

1 Add your PDFs

Drag & drop PDFs here or click to browse — batch supported, up to 10 files

    2 Watermark settings

    48pt at 45° is the classic review-copy look.
    15–20% stays readable over the text beneath.
    Tiled watermarks are harder to crop out of screenshots.
    First page to stamp

    3 Stamp & download

    Working…

    ✅ Done — your watermarked PDFs

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

    Watermark as many PDFs as you like — everything runs in your browser, files never leave your device.

    How it works

    The tool loads your PDF with pdf-lib in your browser, embeds a bold font, and draws your watermark text on each page at the angle you chose — centered for the classic review-copy look, or tiled in a grid that is much harder to crop out of screenshots. Opacity keeps the mark visible without hiding the content beneath. A new watermarked copy is saved for download; the original file is untouched.

    Everyday uses

    • Freelancers — stamp DRAFT on proposals and mockups before sending to clients.
    • Authors — mark review copies of ebooks as SAMPLE to discourage piracy.
    • HR & legal — stamp CONFIDENTIAL on sensitive documents before sharing.
    • Photographers — watermark PDF portfolios and contact sheets with your studio name.

    Frequently asked questions

    Can the watermark be removed from the PDF?

    A determined user with PDF editing software can remove any text watermark. For stronger protection, combine a tiled watermark with sharing only low-resolution copies.

    Will the watermark cover the text?

    No — at the default 18% opacity the watermark sits visibly above the page but the content beneath stays fully readable.

    Is my document uploaded anywhere?

    Never. pdf-lib runs entirely in your browser, so your files never leave your device.