Add Watermark to PDF

Free PDF watermark tool

Add text or image watermarks to PDF files in your browser.

Mirown Add Watermark to PDF helps you place a custom text watermark or uploaded logo/image watermark on a PDF. You can control the font size, font family, color, opacity, rotation, position, image size, and repeat pattern before downloading the watermarked PDF.

The tool is free to use, no sign up or login is required, and the workflow is browser-first. It is made for everyday PDF protection, branding, review labels, draft marks, sample files, internal documents, and simple ownership labels.

How to add a watermark to PDF

1. Click Upload PDF and choose the PDF file from your device.
2. Choose Text watermark or Image watermark from the top toolbar.
3. For text, type your custom watermark and adjust font, size, color, opacity, and rotation.
4. For an image, upload a JPG or PNG logo, resize it, set opacity, rotate it, and position it.
5. Choose a position such as center, top, bottom, corners, or drag the watermark anywhere on the preview.
6. Select Single watermark or Tiled watermark if you want the watermark repeated across the PDF.
7. Click Download PDF to create and save the watermarked PDF in your browser.

What this free tool includes

• Custom text input for PDF watermarks.
• Font size control and basic web-safe font family choices.
• Text color picker for visible or brand-colored watermarks.
• Opacity slider for transparent watermark effects.
• Rotation control for diagonal watermarks such as 45 degrees.
• Position presets: center, top, bottom, and corners.
• Upload logo/image watermark with resize, opacity, rotation, and drag positioning.
• Single watermark or tiled repeat watermark pattern.
• Preview and download without creating an account.

Why use Mirown PDF watermark tool?

Mirown keeps the watermark workflow clear: upload a PDF, choose text or image, adjust the look, preview the position, and download. The page avoids unnecessary account screens and confusing settings, while still giving the controls people expect from a useful watermark tool.

A watermark can help mark a PDF as draft, sample, confidential, reviewed, paid, unpaid, copy, or branded with a company logo. Transparent and rotated watermarks are especially useful because they can be visible without covering the document too strongly.

Text watermark tips

Use short words like Draft, Sample, Confidential, Approved, Paid, or your brand name. Increase opacity if the watermark is too light, reduce opacity if it covers the document too much, and use rotation for a professional diagonal watermark style.

Image/logo watermark tips

Use a clean PNG or JPG logo. Transparent PNG logos usually look best. Resize the image so it does not hide important document content, lower opacity for a softer brand mark, and drag it to a corner or center depending on how visible you want it to be.

Privacy and safe use

This tool is designed to process supported PDFs in your browser. Mirown does not provide upload-based storage for this workflow. Keep your original PDF, review the downloaded watermarked file, and avoid using any online tool for documents that require special legal, financial, medical, or confidential handling unless you are comfortable with the browser workflow.

Important limits

Very large PDFs, encrypted PDFs, damaged files, unusual embedded objects, or low-memory devices can affect browser performance. For important documents, always open the final PDF and confirm that the watermark appears correctly on the pages before sending, printing, signing, or sharing it.