Overlay PDF
Stamp one PDF over every page of another, at any size and opacity.
- Free
- No signup
- Nothing uploaded
- No watermark
Drop a file here
The document to stamp · read on your device, never uploaded
Drop a file here
The stamp · read on your device, never uploaded
30%
100%
How to Use the Overlay PDF Online
Overlay PDF takes two files: the document, and a PDF whose first page is laid over it. The overlay is drawn centred on every page at a size you set, from 10% to 200%, and an opacity from 5% to 100%. It is how a letterhead or a printed frame gets applied to a document that was generated without one, and because the overlay is vector, it stays sharp at any zoom.
Stamps one PDF over every page of another, at any size and opacity. This is how letterheads are applied at scale: the letterhead is a single-page PDF laid over a document generated without one, which keeps the two independent.
No software to install Free Works on any device
Step-by-Step Guide to Using the Overlay PDF
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1. Drop in the document you want stamped, then the PDF to stamp on top of it
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2. Set the size and opacity — the stamp is centred on every page
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3. Press Apply & download PDF to save the result
No .pdf file to hand? Download a sample PDF file (6.3 KB) and try it.
What is the Overlay PDF?
Stamps one PDF over every page of another, at any size and opacity. This is how letterheads are applied at scale: the letterhead is a single-page PDF laid over a document generated without one, which keeps the two independent.
PDF file
.PDFStamp one PDF over every page of another, at any size and opacity.
At a glance
- Takes: The document PDF plus a PDF to use as the overlay
- Gives: The document with the overlay drawn on all its pages
- Size: 10% to 200% of the overlay page's own size
- Opacity: 5% to 100%
- Quality: Vector on vector; nothing is flattened to an image
- Runs: In the tab; neither file is uploaded
Why Edit PDF Pages Directly?
Going back to the original Word file is not always possible, and sometimes it never existed. Adding text, page numbers, a watermark, a stamp or a header straight onto the PDF finishes the job in minutes.
“The quickest fix is the one made on the file you already have.”
- No need for the source file
- Clear ownership with watermarks
- Margins for binding
- Crooked or mirrored pages fixed
- Page numbers on every sheet
- Headers and footers added
- Forms you can fill in
- Correct title and author details
Popular Uses for PDF Editing Tools
Small finishing touches are what most people come to edit a PDF for.
- Numbering a report Add page numbers to a thesis or report that was saved without them.
- Marking drafts Put a DRAFT or CONFIDENTIAL watermark across pages before sharing them for review.
- Legal bundles Apply Bates numbers so every page in a case file has its own reference.
- Filling a form Type into a PDF application form instead of printing, writing and scanning it.
- Assignment borders Put the border a teacher asked for around each page of a project.
- Room for binding Widen the margins so text is not lost in the spine when printed and bound.
- Trimming white space Crop away wide empty edges so the page reads better on a phone.
- Approval stamps Stamp APPROVED, PAID or RECEIVED on invoices and letters as they are processed.
What You Can Do with the Overlay PDF
Understands PDF structure rather than treating the file as bytes
Additions are written into the existing page content rather than flattening it to an image
What you place stays sharp at any zoom, because it is drawn as vector rather than pasted as pixels
Why Use ToolXkit for Overlay PDF?
Your files stay with you
Everything runs inside your browser. Nothing you open or type is uploaded to a server.
Free, with no catch
No signup, no watermark and no daily limit on how often you use it.
Fast
Results appear in seconds, because nothing has to travel over the internet and back.
Works on any device
Use it on a computer, tablet or phone, in Chrome, Edge, Firefox or Safari.
Nothing to install
No app, no extension and no desktop program. Open the page and start.
Made for real people
Plain words and clear buttons, built by one developer who wanted tools like this to exist.
PDF Editor for Different Users
Students
Number pages, add borders and put your name in the header of assignments.
Lawyers
Add Bates numbers, stamps and headers to documents going into a court bundle.
Accounts teams
Stamp invoices as paid and add a reference number in the footer.
Teachers
Put a school watermark and page numbers on worksheets before printing them.
Office administrators
Fill forms and correct document properties before files are sent onward.
Designers
Change a page background or overlay a letterhead on a plain PDF.
Best Times to Edit a PDF
Editing the PDF itself makes sense when you are:
- Missing the original Word file
- Finishing a thesis for binding
- Sending a draft for review
- Preparing papers for court
- Filling a form on screen
- Branding pages before sharing
- Fixing a page scanned upside down
- Marking invoices as paid
Tips and Good to Know
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The overlay has to be a PDF, and only its first page is used. For a PNG or JPG logo, run PNG to PDF or JPG to PDF first, then use the result here.
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It applies to every page. To stamp only the cover, extract that page, overlay it, and merge it back with Merge PDF.
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There is no drag-to-position; the overlay is centred and scaled. For text in a chosen corner, Header and Footer PDF is simpler.
Frequently Asked Questions
Answers to common questions about this tool.
Do I need to install anything to use the Overlay PDF?
No. Overlay PDF runs entirely in your browser — there is nothing to download, no extension and no desktop program. It works the same on Windows, macOS, Linux, Android and iPhone.
Is it safe to use the Overlay PDF online?
Safer than the usual alternative, yes. Most online tools upload your file to a server you know nothing about, where it sits until someone deletes it. Here the file never leaves your device — the processing happens in the page itself, so there is no server copy to leak, retain or sell.
Can I change words that are already in the PDF?
These tools add to the page: text, numbers, stamps, borders, headers or watermarks. Rewording what is already printed on a PDF is not their job, so for heavy rewriting, edit the original document if you still have it.
Does Overlay PDF leave a watermark of its own?
No. It is completely free, and the site adds no logo or mark of its own. The only marks on your pages are the ones you choose to put there.
Will Overlay PDF work on a scanned PDF?
Yes. Additions such as page numbers, stamps, borders and watermarks are placed on top of each page, so they work on scans just as they do on typed documents.
Can I undo a change after downloading?
The download is a new file, and your original is left exactly as it was. If you want a different result, open the original again and repeat the steps with new settings.
Further reading
- Bates numbering (Wikipedia) Why legal teams give every page a unique number, and how the scheme works.
- Watermark (Wikipedia) Where the idea of a watermark came from and how it is used on paper and in files.
More Edit PDF Tools
Other free tools for the same kind of job.
- Edit PDF Add text, drawings, highlights, shapes and pictures to any PDF page, then download it. Open tool
- Add Border to PDF Add a neat border to PDF pages: pick a design, colour, line style and margins, then download. Open tool
- Add Header & Footer Put a title, date or reference on every page. Open tool
- Add Margins to PDF Give every page a margin — for binding, printing or notes — without shrinking the text. Open tool
- Add Page Numbers Number the pages of any PDF, your position and style. Open tool
- Add Watermark Stamp text or an image across every page. Open tool
- Bates Numbering Stamp sequential legal reference numbers across a document set. Open tool
- Crop PDF Drag a crop box, or trim the white border automatically. Open tool
- Edit PDF Metadata Fix or strip the title, author and hidden timestamps. Open tool