Qu’est-ce qu’un QR Code ? FAQ sur les Codes à Réponse Rapide
Got a question about QR codes or QRSansar? You'll find the answer below. We've covered everything from how to scan a QR code on Android and iPhone to creating WiFi QR codes, fixing scan issues, and understanding what makes a good QR code design.
Getting Started
What is QRSansar and what can I use it for?
QRSansar is a free, browser-based QR code generator. You can create QR codes for websites, WiFi passwords, contact cards (vCard), WhatsApp messages, email addresses, events, and more. Everything runs locally in your browser, so nothing you type is ever sent to our servers.
How do I create a QR code for free?
Head to the generator on the home page (or any type-specific page like /wifi or /url). Enter your content, customize the design if you want, and click Download. That's it. No account needed, no watermarks, no charge.
Do I need to create an account?
No account required for generating and downloading static QR codes. If you want dynamic QR codes (editable destinations and scan analytics), you'll need to sign up for a free account. Static QR codes are available to everyone with no login at all.
How to Scan a QR Code
How do I scan a QR code on Android?
On most Android phones running Android 9 or later, open the default Camera app, point it at the QR code, and wait a second. A notification or banner will appear at the top of the screen with a link or action. Tap it to open. If your camera doesn't react, try Google Lens (tap the Lens icon inside Google Photos or the Google Search bar). On older Androids, download a free QR scanner app from the Play Store.
How do I scan a QR code on iPhone?
Open the built-in Camera app (not a third-party camera), point it at the QR code and hold steady. A yellow-bordered box will appear around the code, followed by a notification at the top of the screen. Tap the notification to follow the link or take the action. This works on any iPhone running iOS 11 or later, which is any iPhone from 2013 (5s) onward.
How do I scan a QR code on a PC or laptop?
Windows 10 and 11 include a QR scanner inside the Camera app. Open the Camera app, switch to QR Code mode, and point your webcam at the code. On a Mac, open Photo Booth or use a browser extension. You can also upload an image of a QR code to Google Lens at lens.google.com and it will decode it for you without any webcam.
My phone won't scan a QR code. What should I try?
A few things usually fix this: make sure the QR code fills most of your screen or viewfinder (don't scan from too far away), ensure the lighting is decent, hold the phone still for a full second, and clean your camera lens. If the code is printed very small or on a shiny surface, try zooming in slightly. For WiFi QR codes specifically, some older phones may need a dedicated app rather than the native camera.
QR Code Types
What types of QR codes can I create on QRSansar?
You can create QR codes for URLs, plain text, email addresses, phone numbers, SMS messages, WhatsApp chats, WiFi networks, vCard contacts, calendar events, social media profiles, app store links, Airbnb listings, FaceTime calls, coupons, feedback forms, review gating, crypto wallet addresses, PayPal payments, UPI payments, NepalQR payments, GPS locations, EPC (European Payments Council) transfers, and PIX (Brazilian instant payments). That's 23 types in total.
How do I create a WiFi QR code?
Go to qrsansar.com/wifi, type your network name (SSID) and password, choose your security type (WPA2 for most home networks), and download. The QR code uses the standard WIFI: protocol that iPhones and Android phones recognize natively. Guests scan it with their camera and connect without typing a single character.
What's the difference between a static and a dynamic QR code?
A static QR code encodes the destination directly in the pattern. Once printed, it can't be changed. A dynamic QR code points to a short redirect URL (like qrsansar.com/r/abc123) that you can update anytime from your dashboard without reprinting. Dynamic QR codes also show scan analytics: how many people scanned, from which country, on what device. Free accounts get 2 dynamic QR codes; premium accounts get unlimited.
Design and Quality
What file formats can I download?
PNG (best for web and digital use), SVG (vector format, scales perfectly for any print size), PDF (ready for print production), JPG, and WEBP. For anything that will be printed larger than a business card, use SVG or PDF so the QR code stays sharp no matter how big you scale it.
Can I add a logo to my QR code?
Yes. In the designer panel, click "Add Logo," upload your image, and crop it to fit. The generator automatically raises the error correction level so the QR code stays scannable even with a logo covering part of the center. Keep the logo to roughly 20% of the QR code's area for best results.
What's the minimum size I can print a QR code?
As a general rule, print at least 2 cm x 2 cm (about 0.8 inches). Shorter or simpler content produces simpler codes that can go smaller. Long URLs or vCard data create denser codes that need more space. Always do a test scan on the actual printed material before a large print run.
Privacy and Security
Does QRSansar store the data I enter?
No. The QR code generator runs entirely in your browser using JavaScript. Your URLs, WiFi passwords, contact details, and everything else you type stay on your device. We never see it, log it, or store it. You can confirm this yourself by turning off your internet connection: the generator keeps working perfectly offline.
Are QR codes safe to scan?
The QR code format itself is safe; it's just a way of encoding text. The risk is where a QR code points. Before scanning a code you didn't create, check the URL that appears in the preview before tapping. Legitimate businesses don't need to hide their domains. If a code redirects you somewhere unexpected, close the browser tab. QRSansar runs all dynamic QR destinations through Google Safe Browsing to block known phishing and malware links.