Free2BoxFree2Box

Gerador de QR Code

Gere QR Codes rapidamente para URLs, texto, WiFi e muito mais.

Conteúdo
Digite o conteúdo para converter em QR Code
Pré-visualização do QR Code
QR Code gerado

O QR Code aparecerá aqui após digitar o conteúdo

Exemplos de Uso

QR Code de URL
https://example.com
Número de Telefone
tel:+1234567890
Email
mailto:hello@example.com
Conexão WiFi
WIFI:T:WPA;S:NetworkName;P:Password;;
SMS
sms:+1234567890:Hello!
Geolocalização
geo:40.7128,-74.0060

Como Usar

1

Insira Seus Valores

Preencha os campos de entrada com seus números ou parâmetros.

2

Obtenha Resultados Instantâneos

Os resultados são atualizados automaticamente enquanto você digita — sem botão de envio necessário.

3

Copie ou Salve

Copie os resultados para a área de transferência ou use-os no seu fluxo de trabalho.

Por Que Usar Esta Ferramenta

100% Gratuito

Sem custos ocultos, sem planos premium — todos os recursos são gratuitos.

Sem Instalação

Funciona inteiramente no seu navegador. Nenhum software para baixar ou instalar.

Privado e Seguro

Seus dados nunca saem do seu dispositivo. Nada é enviado a nenhum servidor.

Funciona no Celular

Totalmente responsivo — use no seu celular, tablet ou desktop.

QR Code Generation: Structure, Standards, and Best Practices

Key Takeaways

  • QR codes can store up to 4,296 alphanumeric characters with built-in error correction that allows scanning even when partially damaged.
  • QR codes support multiple data types: URLs, text, WiFi credentials, vCards, calendar events, and more.
  • All QR code generation happens in your browser — your data is never sent to any external server.

QR (Quick Response) codes have evolved from their origins in Japanese automotive manufacturing to become a universal bridge between physical and digital worlds. From restaurant menus and payment systems to event tickets and product packaging, QR codes enable instant information access with a smartphone camera scan. Understanding QR code best practices ensures your codes are scannable, secure, and effective.

Global QR code usage increased by over 400% between 2020 and 2024, driven by contactless interactions.

Growth Trend

Common Use Cases

1

URL Sharing

Encode website URLs for print materials, business cards, and signage — allowing instant access without typing long web addresses.

2

Contact Information (vCard)

Encode name, phone, email, and address in vCard format so contacts can be saved to a phone with a single scan.

3

WiFi Network Sharing

Encode WiFi credentials (SSID, password, encryption type) to allow guests to connect to your network by scanning a code.

4

Two-Factor Authentication Setup

Generate TOTP provisioning QR codes for authenticator apps like Google Authenticator and Authy using the otpauth:// URI scheme.

Pro Tips

Use the lowest error correction level (L = 7%) for digital displays and the highest (H = 30%) for printed materials that may get damaged.

Maintain adequate quiet zone (white border) around the QR code — at least 4 modules wide for reliable scanning.

Test your QR codes with multiple scanner apps and devices before deploying to production.

For URLs, use a URL shortener to reduce data density and create smaller, more easily scannable QR codes.

All QR code generation is performed entirely in your browser. The data you encode is never transmitted to any external server, ensuring privacy for sensitive content like WiFi passwords and contact information.

Perguntas Frequentes