# Add a watermark to a PDF

> Stamp CONFIDENTIAL, DRAFT or your name on PDF pages. Choose font, size, color, opacity, angle and position, or repeat it across the page. Live preview, no upload.

Stamp a text watermark on every page, with a live preview before you save.

## Key facts

- **Price:** Free, no sign-up, no watermark
- **Upload:** Never: the file is processed on your device
- **Works on:** Any recent browser on a computer, iPhone, iPad or Android
- **Files:** Up to 400 MB per PDF on a computer, 150 MB on iPhone and iPad. Larger files depend on your device's memory.
- **Updated:** October 1, 2026

Type your text and adjust font, size, opacity, angle, color and position, or repeat it across the whole page. Latin text is added as real PDF text; other scripts (Arabic, Chinese, Japanese…) are added as a sharp high-resolution image so they display correctly everywhere.

## How it works

1. Drop the PDF.
2. Type the text and adjust its look; the preview shows page 1.
3. Select Add watermark and download the PDF.

## Supported files

Input: one PDF. Output: one PDF.

Up to 400 MB per PDF on a computer, 150 MB on iPhone and iPad. Larger files depend on your device's memory.

## When to use it

- Mark drafts and quotes as DRAFT or CONFIDENTIAL.
- Put your name on documents you send for an application.
- Brand portfolio pages before sharing them.

## Quality and limitations

- A text watermark can be removed by someone with a PDF editor; flatten the PDF to make that harder.
- Text watermarks only (no image logos).

## Common issues

- **The watermark covers the content.** Lower the opacity to 15–25% and pick a light color.
- **I need it only on some pages.** Type the pages in the Pages field, for example 1-3.

## Private by design

This tool runs entirely in your browser with JavaScript. Your file is read and processed on your device and is never uploaded to a server. Closing the tab discards everything.

[See how it works, step by step](https://nimbopdf.com/how-it-works/)

## Frequently asked questions

### Will the watermark print?

Yes. It is part of the page.

### Does it work with non-Latin text?

Yes. Scripts the standard PDF fonts can't draw are added as a sharp image.

### Is my PDF uploaded?

No. The watermark is added in your browser.

## Related tools

[Page numbers](https://nimbopdf.com/add-page-numbers-to-pdf/)[Flatten PDF](https://nimbopdf.com/flatten-pdf/)[Sign PDF](https://nimbopdf.com/sign-pdf/)[Crop PDF](https://nimbopdf.com/crop-pdf/)

## Guides

- [How to add a watermark or page numbers to a PDF on iPhone](https://nimbopdf.com/how-to-add-a-watermark-to-a-pdf-on-iphone/)

## Edit

[Page numbers](https://nimbopdf.com/add-page-numbers-to-pdf/)[Crop PDF](https://nimbopdf.com/crop-pdf/)[Fill PDF form](https://nimbopdf.com/fill-pdf-form/)[All PDF tools](https://nimbopdf.com/tools/)

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Source: https://nimbopdf.com/watermark-pdf/ · Nimbo (English) · https://nimbopdf.com/llms.txt