Add Watermark to PDF Online Free — Text & Image Watermark

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Drag & Drop Your PDF Here

or click to browse your files

⚙️ Watermark Settings

Watermark Type

Watermark Text

Font

Color

#cc0000

📎 Click or drag an image here
PNG, JPG – transparent background (PNG) recommended Image preview

Appearance

Opacity (Transparency)

30%

Size

Rotation (degrees)

-30°

Position on Page

↖

↑

↗

←

✛

→

↙

↓

↘

Display Mode

Pages

Processing...

👁️ Real-Time Preview

Page 1 / 1

The preview shows approximately how the watermark will look. The final PDF may vary slightly.

✅ PDF Generated Successfully!

Your watermarked PDF is ready to download.

How to Add a Watermark to PDF Online

Upload Your PDF: Click "Select PDF File" or drag your document into the upload box. The file loads directly in your browser with real-time interactive previews.
Select Watermark Type: Choose between a text watermark (e.g. DRAFT, CONFIDENTIAL, APPROVED) or upload your company logo (PNG or JPEG).
Customize Styling & Placement: Adjust rotation angle, opacity transparency, font style, and placement (using the 9-point grid or full-page diagonal tiling).
Apply & Download: Click "Apply & Download PDF" to embed the watermark into the document catalog and save your updated file immediately.

Text vs. Image Watermarks: When to Use Each

Watermarks are essential tools for digital rights management, brand visibility, and intellectual property protection:

Text Watermarks: Ideal for marking legal drafts, NDA contracts, confidential financial estimates, or sample educational materials. Text stamps are drawn as scalable vector elements that maintain sharp clarity across all zoom levels.
Image & Logo Watermarks: Perfect for corporate letterheads, architectural plans, photography portfolios, and marketing brochures. Support for transparent PNG files ensures clean overlays without harsh white borders.

Flexible Placement, Diagonal Tiling & Layering

HelpPDFs provides granular layout controls to match your exact publishing standards. Use the single-placement grid to stamp logos precisely in corners or center pages. Alternatively, activate Tiled Pattern (Grid) to repeat semi-transparent diagonal stamps across every square inch of the sheet, discouraging unauthorized screenshotting or screen recording.

Client-Side In-Browser Processing

Document privacy is critical when stamping sensitive contracts or proprietary reports. HelpPDFs processes your files locally using client-side JavaScript. Your documents remain in your device's browser memory and are not uploaded or permanently stored on external servers.

Frequently Asked Questions (FAQ)

Can I add both text and image watermarks?

Yes. You can create custom text stamps such as CONFIDENTIAL, DRAFT, or sample notices, or upload your company logo (PNG or JPEG) to brand your documents.

Can I customize watermark position, angle, and opacity?

Yes. Choose from a 9-point grid layout or repeated diagonal tile pattern. You can freely adjust rotation angles (-90 to +90 degrees), transparency opacity (10% to 100%), font size, and text color.

Can I apply the watermark behind or over the page content?

Yes. The layer control lets you stamp the watermark either over existing text and illustrations or underneath the page content so text remains easily legible.

Are my files uploaded to any external server?

No. All PDF loading, canvas rendering, and watermark embedding take place client-side in your web browser. Your confidential files are processed locally on your device.

Can I select which pages receive the watermark?

Yes. You can stamp all pages, only odd pages, only even pages, or define a specific custom page range (such as 2-10).

💧 Add Watermark to PDF