Can I use my own logo instead of text?

Yes. Switch to image mode and upload a PNG or JPG, then set its opacity and how large it sits on the page. The logo is drawn onto every page, either once in the center or repeated as a tiled pattern, depending on the layout you pick.

Does the watermark go on every page, or can I pick pages?

It goes on every page of the document. There is no per-page or page-range option in this tool, so the watermark is uniform across the whole file. If you need a mark on only some pages, split those pages out first, watermark them, then recombine.

What can I adjust on a text watermark?

Text mode gives you the wording, font size, opacity, a rotation angle between minus 90 and plus 90 degrees, and a color from gray, red, blue, or black. You also choose whether the text sits centered on each page or repeats in a tiled diagonal pattern.

Will the watermark sit over the page or behind the text?

It is drawn on top of the existing page content at the opacity you set, so a semi-transparent mark shows through to the text underneath. Lowering the opacity keeps the document readable while still making the watermark visible.

Is the file uploaded to add the watermark?

No. The watermark is drawn in your browser through pdf-lib, so the PDF and any logo image you add stay on your device. Nothing is sent to a LittlePDF server, which matters when you are marking a confidential draft.

What does it cost and how large a file can I watermark?

One credit per run, with 500 free credits a day. Files up to 25 MB are covered free; Pro ($6.99/mo, or $4.99/mo billed annually) raises the limit to 500 MB. LittlePDF does not add any mark of its own to the output.

Watermark

Upload your files here

Up to 25 MBPDF Only

Processed in your browser. Files never leave your device.

Watermarking a PDF means drawing semi-transparent text or an image over its pages to signal ownership, confidentiality, or draft status. The mark is composited on top of the existing content at a chosen opacity, so the document stays readable underneath.

At a Glance

1 Credit

Per Run

On-Device

Processing

Text & Image

Modes

25 MB

Free File Limit

Key Facts

LittlePDF Watermark PDF supports a typed text mark (with font size, opacity, rotation, and a gray/red/blue/black color) and an uploaded PNG or JPG image mark (with opacity and scale).

Each watermark can be centered on the page or tiled across it, and is applied to every page of the document; there is no per-page or page-range selection.

Watermarking runs entirely client-side in the browser using pdf-lib, costs 1 credit, and works on files up to 25 MB free or 500 MB on Pro.

How to Watermark in 3 Steps

Drop the PDF you want to mark into the upload area.

Choose text or image mode, then set opacity, rotation or scale, color, and a centered or tiled layout.

Click the process button and the watermarked PDF downloads to your device.

Why Watermark with LittlePDF?

Stamp typed text or your own PNG or JPG logo across the document, whichever fits the job.

Tune a text mark with font size, opacity, rotation, and a color, or set opacity and scale on an image mark.

Choose a single centered mark or a tiled diagonal pattern that covers the whole page.

The watermark is drawn in your browser with pdf-lib, so the file and your logo never leave your device.

Features

Text or Image Marks

Type a watermark like CONFIDENTIAL with adjustable font size, opacity, rotation, and color, or upload a PNG or JPG logo and set its opacity and scale. Both kinds are drawn onto every page.

Centered or Tiled Layout

Place the watermark once in the middle of each page, or tile it in a repeating diagonal pattern across the whole page when you want full coverage that is hard to crop out.

Drawn On-Device

The mark is composited onto the pages locally in the browser with pdf-lib. The PDF and any logo image stay on your machine, and LittlePDF adds nothing of its own to the result.

Frequently Asked Questions

Processed locally. Files never leave your device.

Last updated: June 2026

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