You already have a finished PDF and want readers to land on a web page, a contact card or a Wi-Fi network. A QR code is the shortest route there, but dropping one onto the page at random can leave you with a square nobody can scan.
Step by step: putting a QR code on a PDF
- Pick the PDF: Drop your document into the tool. A thumbnail of the page appears as a preview.
- Enter the content: Choose website, contact card, phone, email, WhatsApp, Wi-Fi or plain text. You do not need to type https://; the tool adds it.
- Place it: Drag the QR on the preview and resize it from its corner. Put it on the first page, the last, every page or just pages such as 1,3,5-7.
- Download: The file comes out as original-name_qr.pdf. The text, links and forms of your document stay as they were.
Add a QR Code to PDF — Drag the QR anywhere on the page; your file never leaves your device.
How big should it be?
Small codes struggle to scan. The tool warns you below 15 mm, and even on a tight layout such as a business card that is a sensible floor. The more you put in the code the denser its pattern becomes, which makes it harder to read at the same size. A short web address instead of a long text is the biggest win in a small space.
Colour and background
- A dark pattern on a light background is the safest pairing.
- A light pattern on a dark background fails on many phones; the tool notices and warns you.
- If the pattern and background are close in tone the code may not scan; you get a warning when contrast is low.
- Do not squeeze the blank frame around the code; the reader needs it to recognise the code.
Why it stays sharp in print
The QR is drawn into the PDF as vector shapes rather than as a picture. Scale it up or down and its edges stay crisp, even on a brochure going to a print shop. If you need the code on its own, you can download it as PNG or SVG too.
Adding a logo
You can place a small logo in the middle. Because a logo hides part of the code, the tool raises error correction to its highest level automatically. Keep the logo small anyway and test the printed result with your phone.
On screen you may need to zoom in before a phone can read the code; that is a screen limit, not a flaw. Print a test copy before sending the job away.
A web-address code is clickable inside the PDF
When the content is a web address, the area under the QR also becomes a clickable link inside the PDF. Someone reading on screen can click it; someone holding a printout can point a phone at it.