Sharing a URL on a slide, a poster, a business card, or a packaging insert. Letting guests join your Wi-Fi without typing the password (use the Wi-Fi preset). Putting "scan to pay / book / order" on signage in physical spaces. Encoding a vCard for instant contact-card import on the receiver's phone.

Error correction trades off with density. Higher levels (Q, H) survive scratches and overlaid logos; lower levels (L, M) keep the code small and faster to scan. Use H if you plan to overlay a logo, otherwise M is the sane default. Contrast matters. Stylised QR codes with low foreground/background contrast often look pretty but scan poorly under bad light. Test by scanning from the printed/screen output before shipping. Long content forces a denser code. If you must encode a 200-character URL, the resulting code is dense and harder to scan from far away. Shorten via a redirect first if size matters. SVG vs PNG. SVG scales without quality loss — best for print or large displays. PNG is universally accepted but pixelates if scaled up; export at the size you'll use. Wi-Fi preset format. WIFI:T:WPA;S: ;P: ;; — modern iOS/Android scan and join automatically; very old phones may not support it.

QR-Code-Generator

Erzeuge QR-Codes für Text, URLs, WLAN oder vCards. Größe, Farben und Fehlerkorrektur einstellbar. Export als PNG oder SVG.

Eingabe

Size (px)

Error correction

Foreground

Background

What is this for?

QR codes are tiny URLs that a phone camera can read in a fraction of a second. Encode a URL, a Wi-Fi network, an email draft, a phone number, or any short text — print it on a poster, a business card, or a menu, and anyone with a phone can act on it without typing. This generator runs entirely in your browser using the open-source qrcode library. Your input text never leaves the page.

When to use it

Sharing a URL on a slide, a poster, a business card, or a packaging insert.
Letting guests join your Wi-Fi without typing the password (use the Wi-Fi preset).
Putting "scan to pay / book / order" on signage in physical spaces.
Encoding a vCard for instant contact-card import on the receiver's phone.

Common gotchas

Error correction trades off with density. Higher levels (Q, H) survive scratches and overlaid logos; lower levels (L, M) keep the code small and faster to scan. Use H if you plan to overlay a logo, otherwise M is the sane default.
Contrast matters. Stylised QR codes with low foreground/background contrast often look pretty but scan poorly under bad light. Test by scanning from the printed/screen output before shipping.
Long content forces a denser code. If you must encode a 200-character URL, the resulting code is dense and harder to scan from far away. Shorten via a redirect first if size matters.
SVG vs PNG. SVG scales without quality loss — best for print or large displays. PNG is universally accepted but pixelates if scaled up; export at the size you'll use.
Wi-Fi preset format. WIFI:T:WPA;S:<SSID>;P:<password>;; — modern iOS/Android scan and join automatically; very old phones may not support it.