How to Add a QR Code to a PDF Online — Free, Any Content

Conferences hand out printed agendas that need a QR to the live session list. Restaurant menus need a QR to online ordering. Real estate listings need a QR to the virtual tour. Adding a QR to an existing PDF takes ten seconds and turns paper into a phone-tap.

When you actually need Add QR Code

Event programs linking to live sessions, brochures linking to booking pages, business cards as printed PDFs, signed contracts that need a verification link, real-estate listings linking to virtual tours.

How to add qr code, step by step

Open the tool

Go to convertpdfgo.com/qr-code. No account, no email, no installation.

Drop the PDF in

Drag the file onto the upload area or click to pick. Files up to 30 MB go through without a queue. Encrypted in transit (TLS 1.3), encrypted at rest, deleted within one hour.

Configure your run

Enter the URL or text, set the corner and size.

Download

The output is a clean PDF — open in any reader.

Common problems and how to avoid them

QR code is too small to scan

100 points (~1.4 inch) is the floor for desk reading. Go to 150-200 for posters.

QR scanned but link is broken

Test the URL in a browser before embedding. We don't validate — whatever text you type becomes the QR payload.

QR appears on wrong page

Page range selector — by default we add to all pages. Set "1" to add only to page 1.

A short word on privacy

Three things to know. One: files go over TLS 1.3. Two: files are encrypted at rest while we process them, then deleted automatically within one hour. Three: we don't look at your files or train on them.

How we compare to other free tools

Feature	convertpdfgo	Smallpdf	iLovePDF
Sign-up	None	After 2/day	Optional
Watermark	None	None	None
Auto-delete	1 hour	Vague	2 hours

Frequently asked questions

What content types work?

Any text. URLs are most common, but vCards (contact info), Wi-Fi credentials, signed tokens, plain text all work.

How big should the QR code be?

100 points (~1.4 inch) is good for desk reading. Bigger if recipients scan from across a room.

Are my files private?

Files are encrypted in transit (TLS 1.3) and at rest, then auto-deleted within one hour.

Will it work on protected PDFs?

Not directly — unlock the PDF first with our Unlock PDF tool if you know the password.

Is there a usage limit?

No. Free, no daily cap, no sign-up wall, no watermark.

How long does it take?

About 1-3 seconds for most files. Larger or image-heavy PDFs can take up to 30 seconds.

What's the file size limit?

30 MB as a guest, 50 MB when signed in.

What to do next

Now you can Watermark, Header & Footer, or Merge PDF. All free.

Or browse our full list of 49 free PDF tools.