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
Overlay Two PDF Files
Add letterhead, stationery, forms, stamps, or a reusable PDF layer over another PDF without sending either file to a server.
Choose two PDFs
Processing happens locally in this browser. Keep this tab open until the result is ready.
Drop exactly two PDF files hereor select files 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.
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 overlay two pdf files
Step 1
Choose exactly two PDFs and keep the base document first.
Step 2
Choose whether to repeat the first overlay page or match pages.
Step 3
Set opacity, create the overlaid PDF, and review alignment.
What this tool does
Document A supplies the base pages. Document B supplies the overlay. Repeat its first page across the base or match overlay pages by position, then control opacity and fit.
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
Which file is the base?
The first selected file is Document A and remains underneath. The second file is Document B and is drawn above it.
What if the overlay has fewer pages?
Repeat-first mode uses its first page everywhere. Match-pages mode overlays only pages that have a corresponding overlay page.
Does the overlay preserve vector content?
Yes. PDF pages are embedded as PDF content rather than screenshots.
Related PDF tools
Continue your document workflow.
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Combine multiple PDF files in your chosen order.
Split PDF
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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.