How to Add a Logo to a QR Code Without Breaking It

How do you add a logo to a QR code without breaking it?

You add a logo by placing a small image in the centre of the code, because QR codes contain built-in error correction that rebuilds the data the logo hides. Keep the logo under about 30 percent of the code area and set error correction to Q or H, and it will keep scanning.

The reason this works is fascinating. A QR code is not a single flat image — it is a grid of data modules plus recovery modules. Designers deliberately build in redundancy so the code survives scratches, dirt and smudges. A logo simply uses that same redundancy on purpose.

Why error correction makes logos possible

QR codes have four error-correction levels — L, M, Q and H — that recover roughly 7, 15, 25 and 30 percent of the data respectively. When you cover part of the code with a logo, the scanner reads the remaining modules and reconstructs the hidden ones from the recovery data.

That is why a logo placed in the centre — where the recovery data tends to sit — usually works, while a logo placed over a corner can fail. The three large squares in the corners are the position markers, and covering those will break the code entirely.

Step-by-step: adding a logo safely

1. Generate the QR code first with your destination link, keeping the URL as short as possible.
2. Raise the error-correction level to Q or H to create extra recovery data.
3. Upload a simple logo — a clear mark on a transparent or plain background works best.
4. Keep it centred and modest, ideally under 30 percent of the code area.
5. Test before printing on at least three phones, at different distances and in low light.

Logo sizing rules of thumb

• Error correction Q: keep the logo under about 22 percent of the area.
• Error correction H: you can go up to about 30 percent.
• Never cover the three corner position markers or the alignment pattern.
• Shorter links leave more room for a bigger, cleaner logo.

How do you test a logo QR code?

Print the code at its final size, then scan it with several different phones, at the real distance, and in both bright and dim light. Test the oldest phone you can find too — older cameras are the toughest test. If it scans reliably there, it will scan everywhere.

Does a bigger logo look better?

A bigger logo looks more striking but eats into the code and raises the risk of failed scans. A clean, centred logo at a modest size looks professional and keeps the code dependable. When in doubt, make it smaller — reliability beats decoration every time. Start with our logo QR code generator and keep the design simple.