QR Tools
Decodificador de código QR
Upload or drag in a QR code image to instantly reveal its contents - URL, WiFi credentials, contact info, or plain text. No camera needed. Everything happens in your browser.
🔒 Images are processed locally in your browser and are never uploaded to any server.
How to Decode QR Codes from Images
- 1. Drag and drop a QR code image onto the upload area, or click to browse.
- 2. The decoder reads the QR code automatically.
- 3. Copy the decoded value or open it as a URL if applicable.
Decodificador de código QR Perguntas frequentes
Quais formatos de imagem o decodificador QR suporta?
Imagens PNG, JPG/JPEG e WebP são suportadas. O código QR deve estar claramente visível e não borrado.
Minhas imagens são enviadas para um servidor?
Não. Toda a decodificação acontece localmente no seu navegador. Suas imagens nunca saem do seu dispositivo.
Que tipos de códigos QR podem ser decodificados?
Qualquer código QR padrão, incluindo URLs, texto simples, credenciais WiFi, vCards, e-mail, números de telefone e SMS.
Por que meu código QR não foi detectado?
Certifique-se de que a imagem esteja bem iluminada, focada e que o código QR preencha uma parte razoável da imagem. Códigos fortemente distorcidos ou danificados podem não ser decodificados de maneira confiável.
2D QR Matrix Standards & Printing Guidelines
Quick Response (QR) codes are two-dimensional matrix symbologies standardized under ISO/IEC 18004. Equipped with Reed-Solomon error correction (ranging from Level L at 7% recovery up to Level H at 30% recovery), QR codes allow reliable scanning even if portions of the printed matrix suffer physical abrasion, smudging, or partial obstruction by custom logos.
Quiet Zone & Contrast Ratios
Always preserve a quiet zone border of at least 4 modules around the outer edge of the QR code. Avoid low-contrast color combinations (such as yellow on white); dark modules on light backgrounds deliver the fastest camera decode speeds.
Vector Print & Privacy Security
Export your finished code in SVG vector format for crisp, infinite scalability on large signage, product packaging, and business cards without pixelation. All generation and camera decoding executes 100% locally in your browser memory-no private credentials, URLs, or scans are ever uploaded to a server.
Additional Technical FAQs
What is the minimum recommended print size for reliable scanning?
For standard smartphone camera scanning at close range (0.3–0.5 meters), print QR codes at a minimum size of 2 x 2 cm (0.8 x 0.8 inches). For posters and billboards, use a 10:1 distance-to-size ratio (e.g., a code scanned from 2 meters away should be at least 20 cm wide).
Are generated codes permanent, and do they ever expire?
All codes generated on BeYourTools are static and permanent. The encoded data (such as your URL, text, or barcode number) is directly baked into the graphical modules with zero server redirection, meaning they will function forever without expiration.