WrenPDF

Add QR Code / Barcode

Add a QR code or barcode to PDF pages. Choose the position, size and pages.

What it does

A QR code is the shortest path from paper to a screen: a payment link, event page, menu or contact card opens with one scan. This tool adds a QR code or barcode to your PDF pages. Use a preset position or drag it in the preview to exactly where you want it.

Barcodes support CODE128, CODE39, EAN-13, UPC, ITF, MSI, Pharmacode and Codabar, so product labels, tracking numbers and inventory codes need no extra software.

How to use it

  1. Drop your PDF file.
  2. Choose a QR code or a barcode and enter the content.
  3. Pick a position, or drag it where you want it in the preview.
  4. Press the "Add and download" button.

When is it useful?

  • Adding a registration link to an event invitation
  • Printing a pay-now QR code on an invoice
  • Putting EAN-13 barcodes on product labels
  • Adding a verification link to certificates

Tips

  • Always scan the printed QR code with a phone before sending it out.
  • In print, a QR code at least 2 cm (0.8 in) wide scans easily on most phones.
  • Long links make the code denser; use a short URL where you can.

Frequently asked questions

What is a QR code for?
A QR code can carry a link, text, an email address or a phone number. When it is scanned with a phone, it starts the matching action.
Which barcode formats are supported?
CODE128 is supported, along with CODE39, EAN13, UPC, ITF, MSI, Pharmacode and Codabar.
Do accented and non-English characters work?
Yes. QR codes support UTF-8, so characters such as é, ñ, ü, ş, ğ and even emoji are carried without any problems.
Where on the PDF is it added?
You can pick one of the preset positions, or drag the QR code with your mouse and drop it wherever you want.
Can a QR code contain accented characters?
Yes. QR codes carry UTF-8 text, so characters such as é, ñ and ü appear correctly when scanned.
How many digits does an EAN-13 barcode need?
Twelve data digits plus one check digit. A number with the wrong check digit cannot become a valid EAN-13, so confirm your product number with your supplier.

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