QR Tools
Décodeur de codes 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.
Décodeur de codes QR Questions fréquentes
Quels formats d'image le décodeur QR prend-il en charge ?
Les images PNG, JPG/JPEG et WebP sont prises en charge. Le code QR doit être clairement visible et net.
Mes images sont-elles téléversées sur un serveur ?
Non. Tout le décodage se fait localement dans votre navigateur. Vos images ne quittent jamais votre appareil.
Quels types de codes QR peuvent être décodés ?
N'importe quel code QR standard, y compris URL, texte brut, identifiants WiFi, vCards, e-mail, numéros de téléphone et SMS.
Pourquoi mon code QR n'a-t-il pas été détecté ?
Assurez-vous que l'image est bien éclairée, nette, et que le code QR occupe une portion raisonnable de l'image. Les codes fortement déformés ou endommagés peuvent ne pas se décoder de manière fiable.
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.