Watermark PDF
A fast, secure way to watermark pdf without desktop software. Your files are deleted automatically within the hour.
Watermark a PDF
Drop your files to try StandardsPDF. This tool is available in the full workspace.
Runs in your browser – nothing to install
Files auto-deleted from our servers within 60 minutes
Free to use with no watermark or signup
Works on desktop, tablet and phone
How it works
Three simple steps
Drag your file into the box above
Let StandardsPDF do the work in your browser
Save the finished file
Private by default
Files are encrypted in transit and deleted within 60 minutes.
Fast
Most jobs finish in under 10 seconds. No queueing.
No signup on free tier
5 documents per day, no credit card required.
FAQ
Frequently asked questions
How do I watermark pdf online?+
Upload your file above, run Watermark PDF, and download the result. It happens in your browser – no software to install and no account needed.
Is the Watermark PDF tool free?+
Yes. Watermark PDF is free on the StandardsPDF free tier, with no watermark and no signup. Pro raises the file-size and daily limits.
Are my files private when I watermark pdf?+
Yes. Files you watermark pdf are processed in isolated workers, never shared, and permanently deleted from our servers within 60 minutes.
Do I need an account to watermark pdf?+
No account is needed to watermark pdf on the free tier – up to 5 documents per day, no credit card required.
Will I lose any quality when I watermark pdf?+
No. Watermark PDF preserves the structure and quality of your original file wherever the output format allows.
What is the maximum file size for Watermark PDF?+
You can watermark pdf files up to 100 MB on the free tier and 2 GB on Pro. Larger files can be split first or handled on the Pro plan.
Can I watermark pdf on my phone?+
Yes – the Watermark PDF tool is fully responsive and works in modern browsers on iOS, Android and iPadOS.