What stays local
Your selected PDF is handled in this browser session. BQ PDF Tools does not add your document to the offline cache or upload it to an application server.
Edit PDF tool
Add Watermark to PDF
Add DRAFT, CONFIDENTIAL, SAMPLE, or custom text to a PDF.
Choose PDF
Processing happens locally in this browser. Keep this tab open until the result is ready.
Drop a PDF file hereor select a file from this device · adaptive limit based on this device
Settings restored for this tabNon-text options from the previous page load were restored. Files and filenames were not saved.
Leave blank for all pages.
Choose a file to begin.
Processing did not finish
Diagnostics include the tool, browser, file count, total size, and visible error—but never filenames or document contents.Your selected files and settings are still available.
Trust and output notes
Use this quick checklist before replacing an important PDF.
What this tool preserves
- Changes are applied to a new PDF copy.
- The page preview helps catch placement issues.
- Warnings explain when signatures or hidden content may be affected.
What to check
Visible additions are not secure redaction or legally binding signatures. Review the result before sharing.
Practical examples
Example 1
Add page numbers before sending a report.
Example 2
Place a draft watermark before review.
Example 3
Clean common metadata before sharing a public copy.
How to add watermark to pdf
Step 1
Choose a PDF.
Step 2
Enter watermark text and style settings.
Step 3
Apply it to all or selected pages and download.
What this tool does
Control the watermark size, angle, opacity, and target pages while keeping the work in your browser.
Privacy note: selected files are handled by JavaScript running on your device. The application does not intentionally transfer document contents to a BQ server. Browser extensions, managed-device policies, and the browser itself remain outside the site’s control.
Compatibility note: PDF is a complex format. Very large, encrypted, malformed, digitally signed, or unusually constructed files may not process correctly. Keep the original document until you have checked the result.
Frequently asked questions
Can I watermark selected pages only?
Yes. Enter a page list or range. Leave it blank for all pages.
Is the watermark removable?
The text becomes part of the generated page content, although advanced PDF editors may still modify it.
Can I use an image watermark?
This release supports text watermarks.
Related PDF tools
Continue your document workflow.
Merge PDF
Combine multiple PDF files in your chosen order.
Split PDF
Create separate PDFs from pages or page ranges.
Compress PDF
Choose text-preserving or scan-focused PDF compression.
Rotate PDF Pages
Select page thumbnails and rotate them visually.
Delete PDF Pages
Select thumbnails and remove unwanted PDF pages.
Extract PDF Pages
Select page thumbnails and create a focused PDF.