Start with a clear purpose
Before generating a QR code, decide exactly what action you want the user to take: open a website, join WiFi, view a menu, save a contact, or download a file.
A clear purpose helps you choose the right page, label, size, and placement.
Use the right size
Small QR codes are one of the biggest reasons for scan failures.
For close-range scanning, a minimum of about 1.5 to 2 inches wide is a good starting point.
For posters or signs viewed from farther away, make the code much larger.
Use high contrast
Dark code on a light background works best.
Avoid low-contrast color combinations like gray on gray or light blue on white.
Do not place QR codes over photos, patterns, or textured designs.
Leave quiet space
A QR code needs white space around it so camera apps can detect its boundaries.
Do not crowd the edges with text, logos, or borders.
Label the code
Tell users what they will get when they scan.
Examples: Scan for menu, Join guest WiFi, Open product page.
Test before publishing
Test with multiple phones and under normal lighting conditions.
Check both iPhone and Android.
Verify the destination page loads fast and is mobile friendly.
Printing and placement tips
Keep the code flat and easy to reach with a camera.
Avoid reflective materials when possible.
Place it where users have time to scan, not while moving quickly.
FAQ
What size should a QR code be?
For close scanning, around 1.5 to 2 inches wide is a strong starting point.
Why is quiet space important?
It helps phones detect the QR code edges correctly.
Should I add text under a QR code?
Yes. A short label improves trust and tells users what to expect.