Add a watermark to PDF

Stamp your PDFs with text or a logo

A watermark tells everyone who sees a document where it came from or how it may be used: CONFIDENTIAL, DRAFT, COPY, SAMPLE, your company logo or a website address. Fileopia adds text or image watermarks to PDFs directly in your browser, so drafts, quotes and client deliverables never pass through a third-party server.

Options

• Text or image – type any text, or upload a PNG or JPG logo (transparent PNGs look best).
• Size – font size for text, or width as a percentage of the page for images.
• Opacity – from a faint 5% to fully solid.
• Rotation – any angle; 45° diagonal is classic for DRAFT stamps, 0° for logos.
• Colour – any colour for text watermarks.
• Layout – centred, tiled across the whole page, or placed in one of nine positions (corners, edges, centre).
• Page range – watermark only selected pages, e.g. 1 or 2-10.
• Batch – watermark many PDFs in one go and download a ZIP.
• Any language – text watermarks support non-Latin scripts.

How to add a watermark to a PDF

• Drop one or more PDFs.
• Choose Text and type your watermark, or choose Image / logo and pick a file.
• Set size, opacity, angle, colour and layout.
• Optionally enter a page range.
• Click Add watermark and download.

Choosing the right watermark

How strong is a watermark?

A watermark is drawn onto the page as text or an image. It is a clear visual statement of ownership or status and deters casual misuse, but a determined person with a PDF editor can remove objects from a page. For stronger protection combine a tiled watermark with Protect PDF and disable editing and copying, or flatten the document with Flatten PDF.

Logo watermarks

Upload your logo as a PNG with a transparent background for the cleanest result. Set rotation to 0°, choose a corner position, and set the width to around 15–25% of the page. For a subtle background logo, choose centre, 50–60% width and 10–15% opacity. The image is embedded once and reused on every page, so the file size grows only a little.

Common uses

• Marking drafts and internal documents as CONFIDENTIAL.
• Branding proposals, reports and price lists with a logo.
• Protecting photography and design proofs sent to clients.
• Stamping 'COPY' on scanned certificates.
• Adding a website address to e-books and handouts.

Watermarking images instead?

For photos and graphics use Watermark Image, which works on JPG, PNG and WebP files in the same private, in-browser way.

Watermark in other languages and scripts

Text watermarks are drawn with fonts that cover many writing systems, so you can stamp 'गोपनीय', 'سري', '機密' or 'ரகசியம்' just as easily as 'CONFIDENTIAL'. This is useful for regional offices, government forms and multilingual teams that need status labels readers understand at a glance.