Add Image to PDF

How to use the add image to pdf

1. Choose a PDF, then a PNG or JPEG to place on it.
2. Set the size as a share of the page width, and the position.
3. Choose which pages, then download the result.

About this tool

This places an image — a logo, a stamp, a scanned mark — onto pages of an existing PDF. The size is given as a percentage of the page width rather than in points, so the same setting produces a proportionate result on A4, on Letter and on an oversized drawing, and the image's own resolution does not change where it lands.

PNG and JPEG are the formats PDF itself supports directly, which is why they are the only two accepted. A PDF can carry either without re-encoding, so the image goes in at its original quality. Anything else — WebP, SVG, HEIC — has to be converted first, and doing that silently would mean re-encoding a picture without saying so.

Transparency works, and it is the reason PNG is usually the right choice for a stamp. A JPEG has no alpha channel, so a logo saved as one arrives with a white rectangle around it, which is a common and entirely avoidable disappointment.

Positions are percentages of the page rather than fixed points, so one setting lands correctly on A4 and on US Letter. PDF measures from the bottom-left corner upwards, the opposite of every screen coordinate system, which is why a naive implementation puts a header at the foot of the page — the conversion is done in one place and tested against all nine anchor positions.

Common uses

• Adding a company logo to every page of a document.
• Placing a scanned stamp or seal on a specific page.
• Putting a QR code onto a printed form.

Frequently asked questions

Which image formats can I use?

PNG and JPEG, because those are the two PDF itself supports directly. Anything else would have to be re-encoded first, which changes the image without saying so.

Will a transparent background stay transparent?

With a PNG, yes. A JPEG has no alpha channel at all, so a logo saved as one arrives with a white box around it.

Why is the size a percentage?

So one setting works across page sizes and regardless of the image's own resolution. A fixed point size lands differently on A4 and on a large drawing.