How to Scan a QR Code on Computer (Beginner Guide)

In today's digital age, Quick Response (QR) codes have become an indispensable tool for sharing information efficiently and conveniently using black-and-white squares. These square patterns of black and white blocks hold a wealth of data, from website URLs and product details to contact information and more. While scanning QR codes using smartphones has become commonplace, the ability to do so on a computer opens up new possibilities for seamless integration between devices. In this guide, we'll explore the methods and tools that empower you to effortlessly scan QR codes using your computer's resources. Whether you're seeking to access a website, retrieve contact details, or interact with diverse digital content, mastering the art of scanning QR codes on your computer will undoubtedly prove to be a valuable skill in navigating our interconnected world.

In this article, we will discuss how you can scan QR codes using your webcam or laptop's camera QR scanning app. QR code readers have emerged as a bridge between the physical and digital realms, enabling users to instantly retrieve data with a simple scan. While QR code scanning has been predominantly associated with mobile devices, advancements in technology have now made it possible to scan QR codes using your computer's webcam or other peripherals. Additionally, if you want to implement the QR code scanning option in your .NET project, all you need is the IronBarcode library.

How to Scan QR Codes Using Your Computer's Webcam

Most modern laptops and desktop computers come equipped with built-in webcams. These webcams can serve as handy tools for scanning QR codes without the need for additional hardware or software. Here's how to do it using a camera app with a QR code scanning option:

  1. Choose a QR Code Scanner Software: Begin by selecting a QR code scanner software that is compatible with your computer's operating system. There are various options available for different platforms, such as Windows, macOS, and Linux. A popular choice is the "QR Code Scanner" desktop application.
  2. Download and Install: Just go to Google and download your preferred application or get it from the official Microsoft store. QR Code Scanner, for example, is available on the Microsoft Store.

    Figure 1 - The QR Code Scanner application on the Microsoft Store

  3. Launch the Software: Open the QR code scanner software and grant it the necessary permissions to access your computer's webcam.

    Figure 2 - The QR Code Scanner software running on a desktop computer

  4. Position the QR Code: Hold the QR code within the webcam's field of view. Make sure the QR code is clear and well-lit for optimal scanning.

    Figure 3 - A QR code as seen from the scanning software, generating a clickable link

    Scan and Interpret: As the software detects the QR code within the camera frame, it will automatically process the data encoded within it. This may lead to various outcomes, such as opening a specific website, displaying text, or triggering an action.

  5. Upload Image: You can also scan the QR code image by uploading images. Simply click on the "Open QR Image" button, choose the file to upload the image, and it will open a dialog box displaying the search results.

    Figure 4


IronBarcode is a highly versatile and feature-rich software library that plays a pivotal role in streamlining barcode generation and recognition processes within a wide spectrum of applications. Boasting an intuitively designed interface and an extensive array of capabilities, IronBarcode emerges as an indispensable resource for developers seeking to seamlessly integrate robust barcode functionalities into their software solutions. Whether engaged in crafting intricate inventory management systems, dynamic point-of-sale platforms, or any other application reliant on barcode interactions, IronBarcode provides an exceptional framework that ensures effortless integration and remarkable efficiency.

Installing IronBarcode

To install IronBarcode and use it in your .NET project, all you need to do is set up the .NET environment and create a C# or VB.NET project. After that, open the NuGet Package Manager Console and execute the following command:

Install-Package IronOcr

IronBarcode is also available to download on the official NuGet Website.

Reading QR Codes using IronBarcode

Now we will explore a code example using IronBarcode to scan QR codes found in images. Scanning a QR code or automatically scanning QR codes using IronBarcode is quite easy. Let's explore the example.

using IronBarCode;
using System;

var resultFromFile = BarcodeReader.Read(@"QR.png");
using IronBarCode;
using System;

var resultFromFile = BarcodeReader.Read(@"QR.png");
Imports IronBarCode
Imports System

Private resultFromFile = BarcodeReader.Read("QR.png")
VB   C#

Figure 5


In today's interconnected digital landscape, the ability to seamlessly scan codes using computer resources offers a valuable bridge between the physical and digital realms. QR codes have evolved into versatile tools for instantly accessing a wealth of information. With the integration of built-in webcams, native camera apps, or third-party apps within browsers, this capability extends to computers as well. By following straightforward steps, from software selection to webcam utilization, users can effortlessly interpret external QR codes, opening pathways to websites, contact details, and more.

Moreover, advanced solutions like IronBarcode enhance this experience, providing developers with powerful tools to integrate barcode functionalities into a variety of applications. Embracing the practice of computer-based QR code generation and reading, scanning proves indispensable in simplifying information exchange.

To learn more about how to read QR codes on a Windows computer and extract entire QR codes from PDF files, you can find a full tutorial on the IronBarcode website.