Watermark PDF
Protect and label your documents with a text watermark on every page. Your file never leaves your device.
- Never leaves your device
- No limits
- No sign-up
- No watermark
Quick answer: To watermark a PDF, select the file, type your text (or tap CONFIDENTIAL, COPY, DRAFT), choose color, transparency and size and click "Apply watermark". The text appears in the center of every page, diagonally or horizontally.
How to do it in 3 steps
- 1Select the PDF.
- 2Type the text and adjust color, transparency and size.
- 3Click Apply watermark and download.
Why use Pronto Arquivo
Ready-made text
CONFIDENTIAL, COPY, DRAFT, PAID and CANCELED with one tap.
Subtle or bold
Three transparency levels, so the document text stays readable.
On every page
The watermark is placed in the center of each page automatically.
Your file is never uploaded
Processing happens in your browser.
Guides
Watermarking personal documents before sending
When sending a copy of your ID, driver's license or proof of address, write what it's for, e.g. "COPY FOR RENTAL APPLICATION - MAY 2026". That makes it harder to reuse the document for anything else.
Frequently asked questions
How do I add a watermark to a PDF?
Select the file, type the text and click "Apply watermark".
Can the watermark be removed?
It's written as text on each page. Advanced PDF editors can remove it; for sensitive documents, combine it with Password Protect PDF.
Can I use a logo or image?
Text only for now.
Is it free?
Yes, with no sign-up and no limits.