A watermark is a logo, text, or pattern that is added onto your PDF, to make it more difficult for the original file to be copied or used without permission.
This article will discuss the best 5 online tools you can use to add watermark to your PDF.
All of these tools can be used for free.
However, some contain premium features you only have access to once you paid.
IlovePDF is a famous PDF watermark tool that offers a wide range of PDF editing tools.
You can watermark your PDFs rather easily.
You can choose the watermark's position, color, size, and even its font.
IlovePDF strictly follows the new European policy (GDPR) and deletes your files after 2 hours.
However, you can only see your modifications once you download the watermarked file, which can make you lose some time if you are not sure about what you do.
UniquePDF offers a brand new way to add a watermark to your PDFs with a unique proposition: each recipient of your PDF gets a PDF with a watermark containing their email address.
It means that if you want to share a PDF with 10 people, 10 unique PDFs with 10 different watermarks will be created, adding a new layer of security.
UniquePDF is GDPR compliant and allows you to manage your requests on your dashboard.
Sejda is a very complete PDF watermarking tool as you can fully customize your watermarks such as its position (simply click and drag the watermark), size, color, and font.
The watermarking process is interactive so you can test it out while not wasting time re-downloading your file every time.
Sejda is GDPR compliant and they delete your files after 2 hours.
However, you are limited to 3 tasks per hour for free.
PDFCandy is another well-known PDF tool. You can easily add a watermark to your PDFs but with a lack of customization.
Placing the watermark is easy with 9 choices.
However, you can't choose the font, size and color of the watermark's text, and the default may not satisfy everyone.
The uploaded files are deleted after 1 hour and this service is free.
The tool you might want to use depends on your use case:
If you just have a basic use case and want to add a watermark on documents but are not really concerned with potential leaks you can use either IlovePDF or Sejda as they both offer a great deal of watermark's customization.
On the other hand, if you would like to distribute your PDF to a restricted set of people and want to add an extra layer of security, you might want to try UniquePDF for free, and upgrade to a paid plan if needed.