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.

Generador de Códigos QR

Genera códigos QR para texto, URLs, Wi-Fi o vCards. Tamaño, colores y corrección de errores personalizables. Exporta PNG o SVG.

Entrada

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.