A QR code is a two-dimensional barcode that packs far more information into a small square than a traditional barcode ever could, and it can be read instantly by any modern phone camera.
How a QR code actually stores data
The black-and-white pattern encodes data using a grid of squares, with additional patterns in the corners that help a scanner figure out the code's orientation even if the image is rotated or partially obscured. Built-in error correction means a QR code can still scan correctly even if part of it is damaged, covered by a logo, or printed at low quality.
Practical uses beyond marketing posters
- Sharing a Wi-Fi password without reading it out loud letter by letter.
- Linking directly to a specific product page, menu, or contact card from printed material.
- Quickly transferring a link from a desktop screen to a phone.
- Adding a scannable link to event tickets, business cards, or packaging.
A tip for reliable scanning
Keep enough contrast between the code and its background, and leave a quiet margin of blank space around the edges — scanners rely on that empty border to locate the code before reading it.
Make your own QR code.
Open QR Code Generator