QR Code Generator

QR codes have become the standard way to bridge physical and digital spaces—restaurant menus, business cards, event posters, and WiFi credentials all rely on scannable codes that anyone with a smartphone camera can read. The QR Code Generator creates these codes for URLs, plain text, email addresses, phone numbers, and WiFi credentials.

Marketers add QR codes to print advertisements to drive traffic to landing pages, business owners put them on business cards for instant contact saving, and venue operators display WiFi QR codes so guests can connect without typing long passwords. The generator produces both PNG raster files for screen use and SVG vector files for print.

Because the tool runs entirely in your browser, you can generate codes for sensitive information—internal URLs, private contact details, or corporate WiFi credentials—without that data ever leaving your device. Customization options let you match the code's appearance to your branding.

QR codes carry redundant data so they remain readable when damaged, and the level is selectable: L recovers about 7% of the code, M about 15%, Q 25%, and H 30%. The default here is M, which is the usual balance between resilience and density.

Higher correction is not free. The redundancy occupies space, so raising the level either enlarges the code or packs the same area more densely, making each module smaller and harder for a camera to resolve. That is a real trade-off rather than a setting to maximise.

The one case where H earns its cost is a logo overlaid in the centre — the correction is what lets the code survive having part of itself covered.

Three things cause most scanning failures. Insufficient quiet zone — the plain margin around the code, conventionally four modules wide — which scanners need to locate the symbol. Insufficient contrast, or inverted colours, since most scanners expect dark on light. And printing too small for the data density: a long URL produces a dense code that needs physical size to remain resolvable, so shortening the URL is often more effective than enlarging the code.

Test before committing to print. Scan with more than one device and, for anything printed at size, from the distance people will actually stand — a poster code that works at arm's length may fail from three metres.

A security point worth stating: a QR code is opaque to the person scanning it, which is exactly why malicious codes stuck over legitimate ones have become a common fraud. As a publisher, use a domain people will recognise. As a scanner, check the URL your phone previews before opening it, and be suspicious of codes on parking meters and payment terminals. Note also that a QR code cannot be edited once printed — if you need the destination to change, point it at a URL you control and redirect from there.