Add Watermark to PDF — Free

Stamp any text as a watermark across every page of your PDF. Customize text, color, opacity, and rotation angle. Perfect for DRAFT, CONFIDENTIAL, and branded documents.

  • Applied to every page automatically
  • Opacity, angle, color all configurable
  • Embedded — cannot be removed via text edit

Free forever · No account needed · Private & secure

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Add a watermark to your PDF, free

A watermark is the fastest way to mark a document's status or ownership before it leaves your hands. Stamp "DRAFT" on a document under review, "CONFIDENTIAL" on an internal report, or your company name on a branded deliverable — all in seconds, entirely in your browser. The watermark is applied to every page automatically and embedded as a permanent visual layer, so it travels with the file no matter where it gets forwarded.

You control every aspect of the mark. The text can be anything you choose. Opacity lets you dial from a faint ghost watermark that does not obscure content all the way to a bold opaque stamp that dominates the page. Rotation angle defaults to diagonal — the most legible and hardest to crop out — but horizontal works if you need a clean header or footer label instead. Font size scales from a subtle note to a full-page declaration.

Once applied, the watermark is embedded directly into the page content and cannot be removed by editing the PDF's text layer. This makes it significantly more robust than metadata or document property marks, which are invisible and easy to strip. If you need additional protection alongside the watermark, combine it with the password-protect tool to restrict further editing.

PDF watermarking, explained properly

How a watermark differs from a stamp or annotation

A watermark is rendered directly into each page's content stream at generation time, exactly like the document's original text and images — not layered on top as an editable annotation object. That distinction is why it survives printing, screenshots, and most PDF viewers' "remove annotations" features: to the file format, the watermark simply is part of the page. It's also why it can't be selectively hidden per-viewer the way a comment or sticky note can.

Choosing text, opacity, and angle for the job

The convention that readers instantly recognize: gray "DRAFT" or "SAMPLE" at 20–35% opacity, angled diagonally so it doesn't sit under a single line of body text; red "CONFIDENTIAL" at slightly higher opacity for documents with real access restrictions. Full 100% opacity turns the watermark into a solid design element — useful for a letterhead-style brand mark, but it will visually compete with body text unless placed in a margin or footer area rather than centered.

What a watermark communicates — and what it doesn't protect

A watermark is a strong deterrent and provenance signal — it discourages casual re-sharing and makes it obvious which draft or copy someone is looking at. It is not access control: anyone who has the file can read every word underneath it. If the goal is restricting who can even open the document, pair the watermark with a real password (Protect PDF); if the goal is preventing specific sensitive passages from being read at all, use redaction, not a watermark, on those passages.

Why use this PDF watermark tool

Fully custom text

Type any text — a word like "DRAFT", a phrase like "Property of Acme Corp", or a URL — and it stamps across every page.

Adjustable opacity

Set transparency from 10% (ghost overlay) to 100% (solid stamp) to suit your branding or review workflow.

Diagonal or horizontal

Choose a rotation angle — diagonal is hardest to crop, horizontal suits header/footer style marks.

Applies to all pages

The watermark is stamped across every page in one click — no need to select or configure pages individually.

Embedded in content

The mark is baked into the page layer, not an editable annotation, so it cannot be deleted without re-flattening the document.

Free & private

No signup, no branding added, no file storage. Your PDF is processed in memory and discarded after download.

How to add a watermark to a PDF

  1. 1
    Upload your PDF

    Click "Choose File" or drag and drop a PDF up to 100 MB.

  2. 2
    Enter watermark text

    Type the text you want to stamp — e.g. "CONFIDENTIAL", "DRAFT", or your company name.

  3. 3
    Customize style

    Set the font size, opacity (transparency), and rotation angle to match your use case.

  4. 4
    Apply & download

    Click Apply Watermark — the stamp appears on every page and your PDF downloads instantly.

Technical details

CoverageApplied automatically to every page, no per-page setup
CustomizationText, font size, color, rotation angle, opacity 10–100%
FontPDF standard font (Helvetica) — renders identically in every reader
PermanenceEmbedded in page content — not a removable annotation
Image watermarksNot supported here — use the Full PDF Editor's stamp/image tool
Page limitNone
Price & accountFree, no signup, instant download

When to watermark a PDF

  • Mark a contract or proposal as "DRAFT" before sending for client review
  • Stamp "CONFIDENTIAL" on internal reports shared outside the company
  • Brand a portfolio or media kit with your company or studio name
  • Add a "NOT FOR DISTRIBUTION" label to a pre-release document
  • Mark invoices as "PAID" or "VOID" before archiving
  • Watermark proof copies to prevent unauthorized printing or redistribution

From our guides

Password Protect a PDF

A watermark deters casual sharing; a password actually restricts access — use both together.

Read the guide

Edit a PDF Without Acrobat

Add an image logo watermark or other overlays with the Full PDF Editor.

Read the guide

Merge, Split & Reorder PDF Pages

Finish organizing your document before watermarking, so the stamp lands on the final page set.

Read the guide

Frequently Asked Questions

Can I watermark every page at once?
Yes. The watermark is automatically applied to every page in the document — there is no per-page configuration needed.
Can I make the watermark semi-transparent?
Yes. Use the opacity setting to choose any transparency level from 10% (faint ghost) to 100% (solid stamp).
Will the watermark be editable or removable?
No. The watermark is embedded as a visual layer in the page content stream and cannot be removed by editing the PDF's text layer or annotations.
Is there a page limit?
No page limit — the watermark is applied to the entire document regardless of its length.
Can I add an image watermark instead of text?
This tool supports text watermarks. For image watermarks or logo overlays, use the Full PDF Editor which supports image stamp annotations.
What fonts are available?
The watermark uses PDF standard fonts (Helvetica by default) which render consistently across all PDF readers without requiring font embedding.
Can I choose the color of the watermark?
Yes. Use the color picker to select any color for the stamp — grey is common for DRAFT marks, red for CONFIDENTIAL.
Does the watermark tool work on mobile?
Yes. The tool is fully responsive and runs in mobile browsers on Android and iPhone — no app required.
What opacity should I use for a DRAFT stamp?
20–35% is the common range for draft marks — visible enough to signal status at a glance but low enough that the underlying text stays fully readable underneath.
Can I remove a watermark I added later?
No — once applied, the watermark is embedded in the page content, the same as any other permanent mark. Keep an unwatermarked copy of the original if you'll need a clean version later.
Should I watermark before or after other edits?
Watermark last, after merging, compressing, or annotating — a watermark applied early can end up covered or excluded if later edits crop or rearrange pages.

Your files stay private

Your privacy comes first. Browser-only tools run entirely on your device — your file never leaves your browser. Advanced tools that need heavier processing use secure server-side processing: the file is sent over an encrypted connection, handled in memory, and automatically deleted right after your download. Either way, we never store, share, or analyze your documents — and it stays free, needs no account, and adds no watermark.

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