FixQR
Why QR codes break or are hard to scan
A QR code is a set of instructions for a camera, not a decoration. The square can look sharp on a screen and still give a phone nothing reliable to read. The failure is usually ordinary: the code is too small, too close to other ink, too faint, too blurry, or it was never a real code.
FixQR keeps the design you already have. It places a working QR code on a flyer, image, poster, or graphic, or it covers a mark that will not scan. You set the destination, place the code, and FixQR reads the finished picture. Download stays off until the destination it reads matches the one you set. The picture stays in your browser. There is no account and no payment.
Too small for the distance
A phone has to see the modules, the small dark and light squares inside the code. If the printed code is tiny, or the person is standing far from a poster, those modules blur together. A code that scans in your hand can fail on a door, a table tent, or a sign across a room.
Give the code more physical size when people will scan it from farther away. Then check the finished picture, not the file on a zoomed-in screen.
No quiet space around the code
A scanner looks for a clear margin around the pattern. Designers often push the code against a border, a photo, or a line of type. The pattern is intact, and the camera still cannot tell where the code starts.
Leave an empty margin on all four sides. A margin the color of the light modules, usually white, is the reliable choice. A colored frame that touches the pattern is a common reason a code that looks fine will not scan.
Weak contrast
The dark modules need to stand apart from the light ones. Gray on gray, yellow on white, or a code reversed out of a photograph often fails. Some cameras also struggle when the code is light marks on a dark field. The three codes below all store the same address. Only the colors change.
Dark modules on a light background are the safe default. If the brand colors make the code faint, the brand colors are the problem, not the phone.
Blur, low resolution, and ink spread
A code exported small and then enlarged turns the modules into soft blocks. A photo of a screen, a compressed JPEG, or a print where the ink spreads does the same thing. The finder squares in the corners get rounded, and the camera loses the grid.
Place the code at the size it will be used. Do not stretch a tiny export. If the print proof looks fuzzy, the scan will be worse than the proof.
Busy art behind the code
A photograph, a gradient, or a pattern behind the modules changes the light and dark values the camera expects. A logo dropped into the middle can be fine when the code is large and the rest of the pattern is intact. The same logo on a small code, or art showing through every module, makes the code hard to read.
Put the code on a plain patch of the design. If the artwork is already finished and the code sits on a photo, cover that area with a real code on a clear background instead of trying to blend it in.
Too much packed into one code
A long web address makes a denser code. Denser codes have smaller modules, so they need to be printed larger and kept cleaner. A short link scans more easily on a flyer than a long address with tracking text.
Folds, glare, and damage
A crease through the pattern, a scratched laminate, or a glossy finish that reflects the phone light can hide part of the grid. The code was valid when it was made. The object in front of the camera is not the same picture.
Check a scan in the light where people will actually use it. A code that works on a matte proof can fail under lobby lights on a glossy card.
A drawn square is not a code
Image tools and AI flyers often paint a black-and-white square that imitates a QR code. The corners look right. The middle is a texture, not data. No phone can recover a destination that was never encoded. That case is covered in Why AI flyers break QR codes.
What to do with a code that will not scan
You do not have to rebuild the flyer. Open the finished picture in FixQR, set the destination, and place a new code over the one that fails. Move it onto a clear part of the design if the old spot is too busy or too small. FixQR reads the result before download, so you can see whether the finished graphic actually contains the destination you set.
If you are adding a code for the first time, the same check applies. A code that is large enough, high contrast, and surrounded by empty margin is the one people can scan.