Add Watermark to PDF

How to add a text watermark to a PDF

1. Drop your PDF file on the box above, or click it to choose the file — or press Load a sample to try it first.
2. Check the settings below the box; the defaults suit most files.
3. Press Convert. Long jobs show a progress bar and can be cancelled; you then see what was made and its real size.
4. Download the .pdf file.

What is kept when you add a text watermark to a PDF

• Your text is drawn as vector text in the centre of each page, diagonally or straight, at the opacity and colour you choose; it scales with each page’s size and follows each page’s orientation.
• The original page content is untouched underneath, so text stays selectable. The watermark is part of the page and cannot be switched off like a comment.
• Latin, Cyrillic, Greek and Vietnamese text is supported (embedded Noto Sans); Arabic, Hindi and other scripts that need shaping are refused with an explanation.

Example

Watermarking the sample — the watermark is real text, so it shows up in the page text:

Input

sample.pdf — 3 pages, A4 portrait (440.0 KB)
Text: CONFIDENTIAL, diagonal, 25% grey

Output

3 pages (492.0 KB); the text layer of page 1 now includes:
CONFIDENTIAL
…as well as every original line of the page.

About PDF files

A PDF holds pages that look the same on every device: text with its fonts, vector drawings and images at fixed positions. Pages can be rotated, reordered or copied between files without redrawing them. It opens in any browser, Acrobat Reader, phone and tablet viewers.

Good to know

• A PDF that asks for a password when you open it cannot be processed here; protection is never removed.

Privacy and limits

The file is read and converted by this page in your browser; there is no upload and no account. Nothing inside a PDF is run: there is no PDF JavaScript engine on this page, and links and forms are copied, not followed. Encrypted PDFs are refused rather than unlocked. PDFs may have up to 2,000 pages. Files up to 150 MB are accepted; a file of the wrong type or a damaged file is rejected with the reason.