Yes, you can place a logo in the middle of a QR code without stopping it from scanning. The code's built-in error correction is designed to rebuild parts of the pattern that are blocked, smudged or torn, and a small logo counts as blocked. Keep the logo small and centred, put it on a clean background, use a high correction level, and stay away from the three corner squares.
Why a logo doesn't break the code
A QR code is more than the data it carries. The pattern of dark and light modules also contains redundant, mathematically generated copies of that data, spread across the whole symbol. When a scanner reads a code, it doesn't just decode what is there — it notices what is missing and reconstructs it.
This built-in repair comes in four grades, called error correction levels: L, M, Q and H. In round numbers, they can rebuild roughly 7, 15, 25 and 30 percent of the code respectively. Those figures come from the QR specification, and generator tools turn them into the level options you see in the settings menu.
When you place a logo over the centre of a code, the scanner treats the covered patch as damage. If the damage stays within the recovery limit, the scanner rebuilds the hidden data and delivers the same result as an untouched code. This is why branded QR codes work at all: the logo occupies space that the error correction was designed to sacrifice gracefully.
Pick a high correction level — and know the trade-off
If you plan to add a logo, set the error correction level to H before you generate the code. Level H can recover about 30 percent of the symbol, which gives you a generous margin for the logo plus real-world wear: scratches, glare, a creased flyer, a smudged screen protector.
The trade-off is density. Redundant data takes space, so the same link encoded at level H needs more modules than it would at level L or M. More modules in the same physical size means each square is smaller, and smaller squares are harder for cameras to resolve — especially at a distance, in dim light, or on an older phone. A code that scans effortlessly at level M can turn sluggish at level H on a small printout.
Two habits keep the density under control. First, encode the shortest link you can; a long URL with tracking parameters inflates the pattern, while a short one leaves room for redundancy without crowding the modules. Second, don't use level H on codes that will never carry a logo — you would be paying the density cost for protection you don't need.
How big may the logo be?
Keep the logo's width to roughly one fifth of the QR code's total width or less. Treat that as a rule of thumb rather than a law: there is no single official number, but staying under about 20 percent is the range where branded codes reliably keep a comfortable safety margin.
The maths behind the rule is friendlier than it looks. A centred logo spanning a fifth of the width covers only a small fraction of the code's total area, because the symbol is two-dimensional. That leaves level H with plenty of recovery capacity in reserve.
Problems start when the logo grows. At a third of the width, the covered area plus ordinary print damage can push the code to the edge of what error correction can rebuild, and scans start failing on the weakest cameras first — the ones you cannot test yourself. If you want the logo more prominent, the better move is to generate a larger code and keep the logo proportionally small, rather than to enlarge the logo on a small code.
Centre the logo. The middle of the code is the safest spot, because the corners and edges carry structural patterns that have no error-correction protection at all — which is the subject of the next section.
Leave a clear background behind the logo
The area under and around the logo should read to a scanner as one clean, blank patch. This is where most do-it-yourself logo codes go wrong.
The common mistake is a transparent PNG dropped straight onto the code. The dark modules show through the gaps in the logo, and the scanner reads a mixture of half-covered squares — ambiguous marks that are neither cleanly dark nor cleanly light. Random noise like that is harder to correct than a solid blank area, because the repair mechanism works best when it can clearly see what is missing.
The fix is simple. Use an opaque logo, or place the logo on a solid white or light-coloured backing — a rounded square works well — that completely hides every module beneath it. The scanner then sees a neat empty rectangle, which is exactly the kind of damage error correction handles easily.
While you are at it, protect the rest of the code's clarity. Keep the modules dark on a light background with strong contrast; don't fade them toward a brand pastel. And keep the quiet zone — the empty margin around the whole code — free of text, borders and graphics, because scanners use that margin to frame the symbol.
Never cover the finder patterns
Look at any QR code and you will see three large square marks: top-left, top-right and bottom-left. These are the finder patterns. A scanner hunts for them first; they tell the camera where the code is, which way round it is, and how big the grid is.
Finder patterns are structural, not data. Error correction does not back them up, because without them the scanner never identifies the object as a QR code in the first place. Cover even part of one finder pattern and most cameras will simply not see a code, no matter how modest the rest of your design is. The same applies to the faint line of alternating modules — the timing pattern — that runs between the finder patterns along the top and left edges.
This is why the logo belongs in the centre. It is also why you should resist design trends that shrink the finder patterns into decorative "eyes" or merge them into the logo. They may look elegant, but they remove the code's handles, and no correction level will bring them back. Leave the three corner squares exactly as the generator drew them.
Test on several phones before you publish
A logo code that scans on your own phone proves very little. Camera quality, scanner software and screen brightness vary widely, and the codes that suffer first are dense ones — which is exactly what a high correction level produces.
Test before you print or publish. Scan with at least three or four phones, ideally including an older or budget model, on both major operating systems. Print a proof at the final physical size and scan the paper, not just the screen; a code that works at full screen size can fail as a small sticker. Try the realistic conditions too: arm's-length distance for a poster, dim lighting for a restaurant table, a quick glance-angle scan the way people actually do it.
Then check the result, not just the confirmation beep. Confirm the scanner opens the destination you intended. If any phone hesitates, needs several attempts, or fails outright, shrink the logo, strengthen the contrast, or regenerate the code at a larger size — free generators such as QRCodeMax.Vip let you adjust the correction level and logo in seconds — and run the loop again. Each cycle takes minutes and can save an expensive reprint.
Conclusion
The key takeaway: error correction is what makes a logo possible, so work with it rather than around it. Use level H, keep the logo centred and under about a fifth of the code's width on a solid light background, leave the three finder patterns untouched, and test on several real phones at final size. Do that, and the branded code should scan just as reliably as a plain one.