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 Image Watermark to PDF
Add a logo, stamp, signature image, or brand mark to a PDF using a separate local PNG or JPG file.
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.
PNG or JPG · transparency supported for PNG
No watermark image selected.
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 image watermark to pdf
Step 1
Choose the PDF, then choose a PNG or JPG watermark image.
Step 2
Select pages, position, size, opacity, and rotation.
Step 3
Apply the image watermark and inspect the result before downloading.
What this tool does
The image is embedded into the generated PDF and placed on all or selected pages. You can control its position, width, opacity, rotation, and distance from the page edge.
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 transparent logos be used?
Yes. PNG transparency is preserved when the source image contains an alpha channel.
Can I watermark selected pages only?
Yes. Enter a page list or range, or leave the page field blank for every page.
Is this a secure signature tool?
No. Placing a signature image does not create a cryptographic digital signature.
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