JunoPDFCustom text and colour
Add a watermark to PDF
Apply a custom text watermark to one or every PDF page without uploading the document.
Add a watermark to PDFPDF
Add a watermark to PDF
or drop your PDF here
✓ No uploads✓ No sign-up✓ Local processing
Adjustable opacity
Multi-page application
Open. Edit. Done.
Three clear steps without uploading the document to a server.
Choose your PDF document
From your device
Use the tools in the editor
Review the result immediately
Download the result to your device
Save a new copy
Your document stays on your device.
Why use this tool: Add a watermark to PDF
Apply a custom text watermark to one or every PDF page without uploading the document.
Private browser processing
The tool uses the PDF editor and keeps the document on your device. You do not have to wait for an upload or trust a cloud service with the file contents.
Review before download
Review the result before downloading and continue using text, signature, image and page organization tools. Changes are written only when you choose to export a new PDF.
Original and compatibility
Keep a copy of the original when working with important documents. Complex PDFs can contain embedded fonts, layers or restrictions that depend on the software used to create them.
Long and complex documents
Multi-page documents use progressive thumbnails and an automatic mode for large files. Pages do not have to be rendered all at once, which reduces memory use and interface delays. Actual performance depends on the device, file size and graphical complexity of the PDF.
Check before sharing
Before exporting, review the pages and every element you added. The downloaded file is a new copy, which preserves the original and lets you compare the result. For legal or administrative documents, always confirm the required signature type, document requirements and PDF compatibility expected by the recipient.
Capabilities, output and limitations
Add a watermark to PDF
Apply a custom text watermark to one or every PDF page without uploading the document.
- Custom text and colour
- Adjustable opacity
- Multi-page application
The result is created as a separate copy on your device. Review the preview, pages and compatibility before sharing an important document.
How to use Add a watermark to PDF
Apply a custom text watermark to one or every PDF page without uploading the document.
Check the document
Apply a custom text watermark to one or every PDF page without uploading the document.
Custom text and colour
Enter a short label and adjust size, opacity and position while keeping the page readable.
Export a new copy
Check contrast and margins on light, dark, rotated and image-heavy pages.
Custom text and colour
Apply a custom text watermark to one or every PDF page without uploading the document.
On-device processing
The document is processed locally in your browser with no cloud upload or registration.
Output and limitations
A watermark does not replace encryption and may disappear if too light or cover content if too dark.
Specific review
Check contrast and margins on light, dark, rotated and image-heavy pages.