QR code with logo

In Krealo QR, adding a logo takes a few steps from your Pro account:

• Create a link or open an existing one.
• Upload your logo as a file. It is resized automatically for the centre of the code.
• Choose the colours, the dot style and the corner style.
• Download the code as PNG, SVG or PDF.

A QR code holds some of its information twice. That is what lets it be read even when part of it is damaged or covered. Error-correction level H is the highest: it leaves more room for a logo to cover the centre without stopping the code from being read. Krealo QR applies it so your code stays scannable.

That doesn’t make an oversized logo safe. Keep it modest in size and always test the result.

Custom colours are an asset, as long as you keep good contrast:

• Choose a pattern clearly darker than the background.
• Avoid light colours on a light background, such as yellow on white.
• If you invert the colours, test with several phones before printing.
• Check that the logo stays legible once placed in the centre.

Pro lets you change the shape of the dots that make up the pattern and of the three corner markers. Rounded dots give a softer look, square dots a more classic one. These choices are cosmetic: they change neither the destination nor the short link.

PNG suits screens and small formats. For a poster, a sign or packaging, SVG and PDF are better: they are vector formats that stay sharp at any size. They are available with Pro, in addition to PNG.

Your logo code points to a Krealo QR short link. With Pro, you can change the destination later without reprinting, and follow scans by day, country, device type and referrer.