Updated:

Document Branding

Add Watermark to PDF on iPhone

Add a custom text watermark to any PDF on your iPhone — a company name, DRAFT stamp, CONFIDENTIAL notice, or copyright line — and control its position, size, color, and opacity.

Draft labels Confidential marks Branding control All pages at once
Best for: proposals, samples, drafts, and client documents that need visible ownership, status, or confidentiality cues on every page.
Download on the App Store

Why Add Watermarks to PDFs

Documents travel. You send a proposal to a client, they forward it to colleagues, it gets saved to shared drives, emailed again. Without identification, your work becomes anonymous—or worse, attributed to someone else.

Watermarks establish ownership and control. Your company name across every page identifies the source. "DRAFT" prevents preliminary versions from being treated as final. "CONFIDENTIAL" reminds recipients of sensitivity.

Beyond branding, watermarks deter unauthorized sharing. A document clearly marked with your company name is less likely to be passed off as someone else's work. It's a simple protection that travels with the document.

Watermarking also pairs naturally with adjacent document controls: review a draft before labeling it, sign the branded version, or encrypt sensitive marked PDFs before distribution.

Watermark Customization Options

Custom Text

Enter any text as your watermark: company name, project name, "DRAFT", "CONFIDENTIAL", "SAMPLE", "DO NOT COPY", copyright notices, date stamps, or any custom message. No character limits—use what you need.

Position Control

Place watermarks exactly where needed. Five position options: top-left corner, top-right corner, center (diagonal across page), bottom-left corner, bottom-right corner. Center gives you the classic diagonal watermark.

Font Size

Adjust text size from subtle to prominent. Small sizes for corner watermarks that don't distract from content. Large sizes for center watermarks that can't be missed.

Color Selection

Choose watermark color to match branding or purpose. Gray for subtle marks, red for warnings, blue for informational, black for formal documents. The color picker covers the full spectrum.

Opacity Control

Set transparency from nearly invisible to fully solid. Light opacity (20-40%) creates professional background marks. Full opacity (100%) makes the mark impossible to miss.

Text watermarks vs image and logo watermarks

There are two kinds of watermark, and they serve different purposes. Knowing which one a document needs is the first decision.

Text watermarks

Words you type — DRAFT, CONFIDENTIAL, SAMPLE, DO NOT COPY, a company name, a copyright line, a date — rendered in a color, size, and opacity you control. Text watermarks are the right choice for status and handling cues that have to be read across the page. A diagonal "CONFIDENTIAL" in 40% red tells anyone who opens the file how to treat it before they read a single line. Because the mark is text, it stays crisp at any zoom level and reads clearly when printed.

Image and logo watermarks

Instead of typed words, a graphic — most often a company logo — placed onto the page. In ScanLens you bring a logo onto the document as a stamp, then set its opacity and position so it reads as a watermark rather than an inserted picture. Logo overlays are the right choice for brand identity on deliverables: a faint house logo in the corner of every page of a proposal, or a studio mark across portfolio proofs. A transparent PNG logo works best, since its background does not box the page content.

Use text when the message is the point — status, confidentiality, ownership stated in words. Use a logo when recognition is the point. Many documents use both: a corner logo for identity and a center "DRAFT" for status. Either way the mark is overlaid on the rendered page and exported into the file.

The diagonal orientation and page coverage

Position and opacity are covered above. Two further choices shape how strongly the mark reads: its angle and how much of the page it covers.

The diagonal orientation

The center watermark runs diagonally — the angle people recognize instantly as a watermark. The diagonal also spans more of the page than horizontal text, so a single word covers corner to corner, which is why "CONFIDENTIAL" and "SAMPLE" are almost always set this way. Corner marks sit horizontally, where an angled mark would look like a mistake rather than a deliberate stamp.

Page coverage

Watermarking every page at once

A watermark that only marks the first page is barely a watermark — anyone can forward page 2 onward without the cue. ScanLens applies the watermark to every page in one pass: set the text or logo, opacity, and position once, and the same mark lands identically on page 1 and page 200. This matters most for multi-page deliverables — a 40-page proposal, a contract with appendices, a portfolio of proofs — where no single page can then be detached and passed off as unmarked, and the consistent placement reads as deliberate branding rather than page-by-page stamping.

What a watermark does — and what it does not

A watermark is a visible status or ownership cue. It can still be cropped, covered, or edited; it does not prevent copying or replace encryption. Check that the mark remains visible without obscuring required text in the exported PDF.

Watermark Patterns

Common watermark types and uses

A useful watermark is not random text. It signals status, ownership, or handling instructions clearly enough that the recipient notices it before re-sharing the document.

Watermark Purpose Recommended Style
Company Name Brand identification Center, gray, 30-40% opacity
DRAFT Preliminary version warning Center, red, 50% opacity
CONFIDENTIAL Sensitivity notice Top or center, red, 40-60% opacity
SAMPLE Example document Center, gray, 50% opacity
DO NOT COPY Copy restriction Center, red, 40% opacity
© 2026 Company Copyright notice Bottom corner, black, 100% opacity
APPROVED Approval status Top right, green, 60% opacity
FOR REVIEW Review request Top, blue, 50% opacity

Watermark Best Practices

Don't Obscure Critical Content

Watermarks should be visible but not block important text or images. Use appropriate opacity—usually 30-50% for center watermarks. The document must remain readable.

Match Document Purpose

Use subtle branding watermarks for professional documents. Use prominent warning watermarks (DRAFT, CONFIDENTIAL) when the mark itself is the message. Match intensity to purpose.

Keep Original Copies

Watermarks are permanent once applied. Always keep unwatermarked originals for final versions or different distribution needs. ScanLens saves watermarked copies without overwriting.

Consistent Branding

Use the same watermark style across related documents. Consistent position, color, and opacity make the marking look intentional rather than improvised. Establish a standard for your documents.

Frequently Asked Questions

Where can I position the watermark?

Five position options are available: top-left, top-right, center (diagonal across page), bottom-left, and bottom-right. Center position creates the classic diagonal watermark that spans the entire page. Corner positions work well for status stamps and copyright notices.

Can I adjust watermark transparency?

Yes, full opacity control lets you set watermark transparency from nearly invisible (subtle background branding) to fully opaque (unmissable CONFIDENTIAL stamps). The preview shows exactly how your watermark will appear before you apply it.

Does the watermark apply to all pages?

Yes, watermarks automatically apply to every page in the document. Each page receives the identical watermark in the same position, ensuring consistent branding or marking throughout the entire document.

Can watermarks be removed after adding?

A watermark is a visible status or ownership cue. It can still be cropped, covered, or edited; it does not prevent copying or replace encryption. Check that the mark remains visible without obscuring required text in the exported PDF.

Can I use any text as a watermark?

Yes, enter any text you want: company names, status indicators (DRAFT, APPROVED), confidentiality notices, copyright statements, dates, or custom messages. There are no restrictions on watermark content.

What is the difference between a text watermark and an image or logo watermark?

A text watermark is words you type — DRAFT, CONFIDENTIAL, a company name, a copyright line — rendered in a color, size, and opacity you choose. An image or logo watermark places a graphic instead of (or alongside) text; in ScanLens you bring a logo onto the page as a stamp and set its opacity and position. Text watermarks are best for status and handling cues that must be readable across the page; logo overlays are best for brand identity on deliverables. Both are overlaid on the rendered page and become part of the exported PDF.

Is a watermark the same as encrypting or protecting the PDF?

No. A watermark is a visible deterrent and a labeling cue — it announces ownership, status, or sensitivity, but it does not stop anyone from opening, copying, or forwarding the file. To actually gate access you need encryption: password-protect the PDF so it cannot be opened without the password. Watermarking and password protection are complementary — label the file with a CONFIDENTIAL watermark, then encrypt the version you send. See password-protect PDF on iPhone for the encryption step.

Related Topics

✏️

Edit PDF on iPhone

All PDF editing tools — hub page.

 🔒

Password Protect PDF

Encrypt for extra security.

 💼

Business Scanner

Professional document branding.

 ✍️

Sign PDF

Add signatures after watermark.
Brand Your Documents

Ready to Add Watermarks to PDFs?

Download ScanLens free and watermark your first document. Custom text, position, color, and opacity—all the controls for professional document branding.

Download on the App Store