What is the difference between a regular stamp and a cross-page seal?

A regular stamp places a complete mark inside each page, while a cross-page seal splits one mark across page edges so people can check continuity in a multi-page file. Both are visible page marks, not digital signatures or tamper-proof evidence.

When should I use a preset stamp or a custom image?

Preset stamps work well for common statuses such as PAID, APPROVED, DRAFT or COPY. Custom images are better for company seals, department marks or signature images. Only upload images and use seals that you are authorised to handle.

Why is my stamp blurry, white-backed or covering text?

A white background usually comes from an opaque JPG or an unprepared image. Blur usually comes from low resolution. Use a clean transparent PNG and adjust scale, opacity and placement while checking the preview.

Is a PDF stamp the same as a digital signature?

No. A stamp or signature image is visible page artwork. It does not verify signer identity, detect tampering or provide a certificate. Use a compliant signing platform when formal electronic signatures are required.

PDF STAMP WORKSPACE

Stamp a PDF in three steps.

Choose a PDF first. Then configure a normal stamp or a seam stamp in the right-side panel, review the result, and download a new file.

Local browser processing Preview before export Normal & seam stamps

Read this tool guide Controls, steps and output notes

Choose the PDF to stamp

Your file is prepared in this browser before you adjust any stamp settings.

Choose PDF file PDF files are processed locally in your browser.

01
Choose fileOpen the PDF you need to process.
02
Set stampChoose a source, range and placement.
03
Review & exportConfirm each page, then create a new PDF.

QUICK ANSWER

Stamp a PDF and keep the result easy to check

Choose a preset status stamp, a transparent seal image or a seam stamp, then set the page range and preview representative pages before exporting a new PDF. The original file stays unchanged, so you can review the marked copy without losing the source document.

01RANGEStamp every page, a range or selected pages

02MARKPreset text, seal image or seam stamp

03LOCALA new stamped PDF in your browser

BEFORE / AFTER

Stamp a document without losing the source

Preview the first, last and densest pages before export.

BEFOREBefore: a clean PDF ready for review.

AFTERAfter: visible status, approval or seam marks on the pages you selected.

HOW TO USE

How to stamp a PDF

Set the page range first, then tune the mark. This keeps a cover page or an attachment from being stamped by accident.

Choose a PDF and wait for the browser to build the page preview.
Select a preset text stamp, upload a transparent seal image, or choose the seam-stamp mode for a document run.
Choose all pages, a range, odd or even pages, or selected pages depending on the document structure.
Set the mark size, opacity, rotation and position; use the preview to check portrait and landscape pages.
For a seam stamp, confirm the page order and the shared edge before exporting.
Create the stamped PDF, open the downloaded copy and inspect the first, middle and last affected pages.

INPUT / SCOPE

What this tool creates

The stamping workspace creates a new PDF with a visible mark. It changes the page appearance, not the underlying document text or signer identity.

What this tool creates
Input	Output	Does not cover
An ordinary, unencrypted PDF plus a preset mark or PNG/JPG seal image	A separate PDF with the selected visual mark on the chosen pages	OCR, editing PDF text, certificate-based signatures or notarization
A continuous page range when using a seam stamp	One visible mark divided across adjacent page edges	Proving that pages were not changed or that a person approved the file

PARAMETER GUIDE

Stamp settings, explained

Choose the simplest mark that communicates status or ownership without hiding the document content.

Stamp settings, explained
Setting	What it changes	Good default
Preset stamp	Adds a repeatable text status such as APPROVED or PAID	Short status for internal review
Seal image	Places a PNG or JPG mark on each selected page	Transparent PNG with a clear edge
Page range	Controls which pages receive the mark	Review all, then exclude covers or attachments
Size and opacity	Balances visibility with readable body text	Start at 80–100% size and reduce when text is covered
Seam stamp	Splits one mark across the edges of consecutive pages	Use on a continuous document run
Position	Places the mark consistently on every page	Check portrait and landscape pages separately

EXAMPLES

Common stamping decisions

Approval copy: use a compact text stamp on the selected review pages, then keep the final signed file separate.
Company seal: upload a transparent PNG, lower opacity only when it competes with contract text, and verify the seal edge at 100% zoom.
Cross-page continuity: use a seam stamp when the mark should visibly connect adjacent pages, and check the first and last page of the run.

LOCAL PROCESSING

Local browser processing

The PDF and seal image are read as browser files and processed in the current browser session. This workflow does not routinely upload the document to a remote conversion server. Large PDFs and high-resolution seal images can use more memory, so keep the original and work in a smaller batch on low-memory devices.

LIMITATIONS

What to check before sharing

A visible stamp is not a digital signature and does not prove who approved the file.
Inspect every selected range, including both the first and last page, before sending the PDF.
A transparent PNG usually gives a cleaner result than a screenshot with a white background.
Keep the unmarked original because stamping creates a new file and may affect signature or checksum validation.
If the PDF will be printed, check one representative page on paper before distributing a large batch.

TROUBLESHOOTING

If the stamped PDF is not right

If the mark covers text, reduce its size or opacity, move it to a clear margin, or place it behind content when available.
If the wrong pages were stamped, reset the page range and compare a page just outside the range.
If the seal looks blurry, use a larger source image with a transparent background instead of enlarging a small screenshot.
If a seam mark does not line up, check page rotation, page order and the first page of the selected run.
If the browser slows down, process fewer pages at a time and reduce the source image dimensions.

FAQ

Frequently asked questions

Confirm the stamp source, page range and preview before exporting. These are the questions people ask most when stamping a PDF.

01Can I stamp only selected pages?

Yes. Set a range or select individual pages before applying the stamp.

02Can I use my own company seal?

Yes. Upload a supported PNG or JPG, preferably with a transparent background, and review the scale before exporting.

03Is a visible stamp the same as a digital signature?

No. It is a visual mark and does not provide certificate-based identity or tamper evidence.

04Does stamping overwrite my original PDF?

No. The tool creates a new stamped copy and leaves the source file unchanged.

05Are my files uploaded to a server?

The normal workflow processes the selected PDF and seal image in your browser.

06Why does a seam stamp need a page-range check?

The mark is divided across adjacent page edges, so a missing or reordered page changes the visual connection.