Why does my WebP look different?

PDF cannot store WebP, so the image is converted to PNG in your browser first. The visual result is identical, though the file grows slightly.

Can I stamp different images on different pages?

Run the tool once per image, using the page range each time and re-dropping the previous output.

Are my files uploaded anywhere?

No. Every operation runs inside your browser tab using JavaScript and WebAssembly. Nothing is transmitted to MyToolyard or any third party, and nothing is stored after you close the tab.

Is there a file size or page limit?

There is no artificial limit — the practical ceiling is your device's memory. Files up to roughly 100MB are comfortable on a modern laptop; very large scanned documents are best processed in smaller batches.

Does it work on a phone or tablet?

Yes. The interface is fully responsive and touch-friendly. Very large documents will be slower on mobile because processing uses the device's own CPU and memory.

Stamp Image on PDF

Drop a logo, seal or approval stamp onto one page or every page, with full control over placement, size and transparency.

No training on your data
Region: global

Drop a PDF to stamp

Click, drag or paste — processing stays on your device

PDF & DocumentsEdit & Brand

Stamp Image on PDF — Overview

About this tool

What is Stamp Image on PDF?

Stamp Image on PDF overlays a logo, seal, QR code or an Approved graphic onto one page or every page of a document.

Position, width, opacity and rotation are all adjustable, so a company logo can sit neatly in a corner while a PAID stamp can sit large and semi-transparent across the middle.

PNG, JPG and WebP are all accepted, and everything is composited locally in your browser.

What it does

What does Stamp Image on PDF do?

Precise image overlay control:

Nine anchor positions across the page
Width set as a percentage of the page, so it scales with paper size
Opacity from a faint watermark to a solid stamp
Free rotation for angled approval marks
Apply to all pages or a chosen range
Transparent PNG support for clean logos and seals

How to use

How to use Stamp Image on PDF

1
Drop the PDF
Add the document you want to brand or stamp.
2
Choose the image
Pick a PNG, JPG or WebP — transparent PNG gives the cleanest overlay.
3
Position and download
Set the anchor, width, opacity and rotation, then export the stamped PDF.

Good to know

Privacy & cost

This tool runs entirely in your browser. Nothing is uploaded, logged, or saved on our servers — safe for confidential or proprietary data.

Use cases & scenarios

Where it fits

Branding outgoing documents

Add your logo to quotes and invoices produced by a system that cannot include it.

Approval workflows

Apply an APPROVED or PAID graphic with a date so status is visible at a glance.

Seals and certificates

Place an official seal on certificates and letters before printing.

Value & benefits

Why people pick this tool

✓Free forever — no page caps, watermarks, sign-ups or premium tier
✓100% in-browser processing — your documents never touch a server
✓Works offline once the page has loaded, ideal for confidential files
✓No queues or waiting rooms — the work happens at the speed of your device

Frequently asked questions

FAQs

Final thoughts

The bottom line

A logo or approval mark is often the last thing missing before a document can go out — and it should not require a design tool or a subscription.