Generador de Códigos QR

Escribe o pega texto o una URL. El código QR se actualiza mientras escribes. Elige un nivel de corrección de errores y los colores, luego descarga como PNG o copia el SVG. Todo ocurre en tu navegador — nada se sube, sin inicio de sesión, sin rastreo.

Cuanto más largo el texto, más denso el código QR. La corrección de errores alta (Q / H) genera códigos que sobreviven al daño y a los logotipos, pero empaquetan menos datos.

Opciones

Los niveles altos siguen siendo escaneables cuando el código está sucio, dañado o tiene un logotipo encima.

Colores

Asegúrate de que el primer plano sea más oscuro que el fondo, o la mayoría de los lectores se negarán a escanearlo.

El borde en blanco alrededor del código (la "zona silenciosa"). Los lectores necesitan al menos 4 módulos de espacio limpio para fijarse. Predeterminado: 4.

About this tool

QR Generator creates QR codes in your browser from text, a URL, a vCard, a WiFi configuration, or an email. The encoder follows the ISO/IEC 18004 spec, supports error-correction levels L, M, Q, and H, and lets you choose the module size and the quiet-zone margin. The output can be downloaded as PNG or SVG. The encoder is bundled into the page; nothing is uploaded. For WiFi QR codes, scanning opens the device's WiFi settings with the network pre-filled — useful for guest networks, conference rooms, and printed handouts.

When to use it

  • Encoding a URL for a printed poster or a business card
  • Generating a WiFi QR code that guests can scan to join the network without typing the password
  • Producing a vCard QR code for a paper business card or a conference badge
  • Encoding an email address or a phone number for a contact sheet

When not to use it

  • You need a tiny QR code (under 100 pixels) for a screen at high density — QR codes need to be readable by phone cameras, which need real estate. Scale up rather than down
  • You need to encode a binary file — paste the text content or a URL that points to the file
  • You need to print at extremely large sizes — the page generates up to 1000 pixels of module, which is enough for a poster; for a billboard, generate the SVG and scale it in your layout tool

Frequently asked questions

What is the maximum amount of data it can encode?

It depends on the version and the error correction level. At the lowest error correction (L) and the highest version (40), you can encode up to 7,089 numeric characters or 4,296 alphanumeric characters. For typical URLs and WiFi configs, you are nowhere near the limit.

Does scanning the QR code send my data anywhere?

No. The QR code encodes the data into the image itself — there is no tracking pixel, no redirect, no analytics. Scanning it with a phone camera shows the encoded content directly.

← Back to the homepage · More guides · More from the blog