Watermark PDF
Add a text watermark to every page of a PDF, with control over wording, size and placement.
Open this tool
Checking access…
About this tool
Add a clear text watermark to a PDF, with adjustable opacity, size and angle. Mark a document as Draft, Confidential or a custom label, then save the watermarked copy.
Using this tool
How do I add a watermark?
Choose a PDF, enter a short label, select its appearance and choose Add watermark. Save downloads the new copy.
Which pages receive the watermark?
Every page receives one centered watermark. Long labels are reduced to fit the page.
What are the limits?
Use an unencrypted PDF up to 10 MB with 1 to 100 pages. Watermark text can contain up to 80 characters; the built-in font supports Latin text and common symbols.
Will the original file change?
The original file is unchanged. The downloaded copy contains the watermark. Editing a digitally signed PDF may invalidate its signature.
Are my files uploaded?
The PDF is processed in your browser. Its contents are not uploaded to ALCO.
More pdfs tools
Merge PDF files
Combine several PDFs into one document, in the order you choose.
Open Merge PDF filesRotate PDF pages
Turn sideways or upside-down pages the right way up and save the result.
Open Rotate PDF pagesNeed more than a quick tool?
These are free and always will be. If one of them is solving a problem you keep having, the underlying issue is usually worth a conversation.