using IronBarCode; using System.Drawing; // Creating a barcode is as simple as: var myBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); // And save our barcode as in image: myBarcode.SaveAsImage("EAN8.jpeg"); Image myBarcodeImage = myBarcode.Image; // Can be used as Image Bitmap myBarcodeBitmap = myBarcode.ToBitmap(); // Can be used as Bitmap // Reading a barcode is easy with IronBarcode: var resultFromFile = BarcodeReader.Read(@"file/barcode.png"); // From a file var resultFromBitMap = BarcodeReader.Read(new Bitmap("barcode.bmp")); // From a bitmap var resultFromImage = BarcodeReader.Read(Image.FromFile("barcode.jpg")); // From an image var resultFromPdf = BarcodeReader.ReadPdf(@"file/mydocument.pdf"); // From PDF use ReadPdf // After creating a barcode, we may choose to resize and save which is easily done with: var myNewBarcode = BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8); myNewBarcode.ResizeTo(400, 100); myNewBarcode.SaveAsImage("myBarcodeResized.jpeg"); // To set more options and optimization with your Barcode Reading, // Please utilize the BarcodeReaderOptions paramter of read: var myOptionsExample = new BarcodeReaderOptions { // Choose a speed from: Faster, Balanced, Detailed, ExtremeDetail // There is a tradeoff in performance as more Detail is set Speed = ReadingSpeed.Balanced, // Reader will stop scanning once a barcode is found, unless set to true ExpectMultipleBarcodes = true, // By default, all barcode formats are scanned for. // Specifying one or more, performance will increase. ExpectBarcodeTypes = BarcodeEncoding.AllOneDimensional, // Utilizes multiple threads to reads barcodes from multiple images in parallel. Multithreaded = true, // Maximum threads for parallel. Default is 4 MaxParallelThreads = 2, // The area of each image frame in which to scan for barcodes. // Will improve performance significantly and avoid unwanted results and avoid noisy parts of the image. CropArea = new Rectangle(), // Special Setting for Code39 Barcodes. // If a Code39 barcode is detected. Try to use extended mode for the full ASCII Character Set UseCode39ExtendedMode = true }; // And, apply: var results = BarcodeReader.Read("barcode.png", myOptionsExample);

using IronBarCode; using System.Drawing; /*** CREATING BARCODE IMAGES ***/ // Shorthand:: Create and save a barcode in a single line of code BarcodeWriter.CreateBarcode("12345", BarcodeWriterEncoding.EAN8).ResizeTo(400, 100).SaveAsImage("EAN8.jpeg"); /***** IN-DEPTH BARCODE CREATION OPTIONS *****/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode which can be styles and exported as an Image object or File GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Any Number, String or Binary Value", BarcodeWriterEncoding.Code128); // Style the Barcode in a fluent LINQ style fashion MyBarCode.ResizeTo(300, 150).SetMargins(20).AddAnnotationTextAboveBarcode("Example EAN8 Barcode").AddBarcodeValueTextBelowBarcode(); MyBarCode.ChangeBackgroundColor(Color.LightGoldenrodYellow); // Save MyBarCode as an image file MyBarCode.SaveAsImage("MyBarCode.png"); MyBarCode.SaveAsGif("MyBarCode.gif"); MyBarCode.SaveAsHtmlFile("MyBarCode.html"); MyBarCode.SaveAsJpeg("MyBarCode.jpg"); MyBarCode.SaveAsPdf("MyBarCode.Pdf"); MyBarCode.SaveAsPng("MyBarCode.png"); MyBarCode.SaveAsTiff("MyBarCode.tiff"); MyBarCode.SaveAsWindowsBitmap("MyBarCode.bmp"); // Save MyBarCode as a .NET native objects Image MyBarCodeImage = MyBarCode.Image; Bitmap MyBarCodeBitmap = MyBarCode.ToBitmap(); byte[] PngBytes = MyBarCode.ToPngBinaryData(); using (System.IO.Stream PdfStream = MyBarCode.ToPdfStream()) { // Stream barcode image output also works for GIF,JPEG, PDF, PNG, BMP and TIFF } // Save MyBarCode as HTML files and tags MyBarCode.SaveAsHtmlFile("MyBarCode.Html"); string ImgTagForHTML = MyBarCode.ToHtmlTag(); string DataURL = MyBarCode.ToDataUrl(); // Save MyBarCode to a new PDF, or stamp it in any position on any page(s) of an existing Document MyBarCode.SaveAsPdf("MyBarCode.Pdf"); MyBarCode.StampToExistingPdfPage("ExistingPDF.pdf", 200, 50, 1); // position 200x50 on page 1 MyBarCode.StampToExistingPdfPages("ExistingPDF.pdf", 200, 50, new[] { 1, 2, 3 }, "Password123"); // multiple pages of an encrypted PDF

using IronBarCode; using System; using System.Drawing; /*** STYLING GENERATED BARCODES ***/ // BarcodeWriter.CreateBarcode creates a GeneratedBarcode object which allows the barcode to be styled and annotated. GeneratedBarcode MyBarCode = BarcodeWriter.CreateBarcode("Iron Software", BarcodeWriterEncoding.QRCode); // Any text (or commonly, the value of the barcode) can be added to the image in a default or specified font. // Text positions are automatically centered, above or below. Fonts that are too large for a given image are automatically scaled down. MyBarCode.AddBarcodeValueTextBelowBarcode(); MyBarCode.AddAnnotationTextAboveBarcode("This is My Barcode", new Font(new FontFamily("Arial"), 12, FontStyle.Regular, GraphicsUnit.Pixel), Color.DarkSlateBlue); // Resize, add Margins and Check final Image Dimensions MyBarCode.ResizeTo(300, 300); // pixels MyBarCode.SetMargins(0, 20, 0, 20); int FinalWidth = MyBarCode.Width; int FinalHeight = MyBarCode.Height; //Recolor the barcode and its background MyBarCode.ChangeBackgroundColor(Color.LightGray); MyBarCode.ChangeBarCodeColor(Color.DarkSlateBlue); if (!MyBarCode.Verify()) { Console.WriteLine("Color contrast should be at least 50% or a barcode may become unreadable. Test using GeneratedBarcode.Verify()"); } // Finally save the result MyBarCode.SaveAsHtmlFile("StyledBarcode.html"); /*** STYLING BARCODES IN A SINGLE LINQ STYLE EXPRESSION ***/ // Fluent API BarcodeWriter.CreateBarcode("https://ironsoftware.com", BarcodeWriterEncoding.Aztec).ResizeTo(250, 250).SetMargins(10).AddBarcodeValueTextAboveBarcode().SaveAsImage("StyledBarcode.png"); /*** STYLING QR CODES WITH LOGO IMAGES OR BRANDING ***/ // Use the QRCodeWriter.CreateQrCodeWithLogo Method instead of BarcodeWriter.CreateBarcode // Logo will automatically be sized appropriately and snapped to the QR grid. var qrCodeLogo = new QRCodeLogo("ironsoftware_logo.png"); GeneratedBarcode myQRCodeWithLogo = QRCodeWriter.CreateQrCodeWithLogo("https://ironsoftware.com/", qrCodeLogo); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.ResizeTo(500, 500).SetMargins(10).ChangeBarCodeColor(Color.DarkGreen); myQRCodeWithLogo.SaveAsPng("QRWithLogo.Png").SaveAsPdf("MyVerifiedQR.html"); // save as 2 formats

Published March 30, 2023

QR Code Extractor (Example Tools)

In this article, we will discuss some of the best QR code readers. First of all, we need to understand what a QR code is.

What is a QR Code?

QR code is an abbreviation for Quick Response Code. It is also known as a matrix barcode. It was first created in 1994. It is a machine-readable code that encodes data about the product to which it is attached. QR Codes have a large storage capacity and can store numeric, alphanumeric, byte/binary and kanji data. The following is an example image of a QR code:

QR Code

We need to decode this QR Code. There are multiple QR Code extractors available. We will discuss some of them here which can be used in both mobile and desktop environments.

We will first discuss QR Code Reader by ByteScout.

ByteScout QR Code Reader

The QR Code Reader is a quick online app that allows you to read QR codes. You can read the barcode in two ways:

Read a barcode from a file - just navigate to a document on your computer.
Connect your camera to the computer and start reading QR codes.

QR Code Reader is able to read any of your QR codes. This is an excellent program with multiple QR code reading features. The interface of this utility is well-designed and gets the job done quickly.

You can launch ByteScout QR Code Online Reader directly from a file on your desktop or from your live webcam. It is able to decode and read QR codes of any size and quality.

QR Code Reader Screenshot

You can also use ByteScout QR Code Reader by browsing it from the Internet browser of your mobile.

Let's explore another useful QR code extractor that has both web and mobile applications.

Aspose Barcode Reader

Aspose Barcode Reader is a free online application that reads barcodes from pictures or your phone's camera. It supports over 60 barcode symbologies, including all the popular ones. It can detect and read multiple barcodes on one image. Even damaged barcodes can be read by our sophisticated algorithm. The name might confuse you because it can only read barcodes, but no, it can also read QR codes. It's free and also available in the Play Store.

Aspose QRCode Reader Online

You can also download it to your phone via the Google Playstore. If you are not interested in downloading, you can use it directly through your favorite internet browsers like Firefox, Opera or Google Chrome.

QrCode Decoder

QrCode-Decoder is a free service for reading and decoding QR codes online. Upload a picture or image file with a QR code or take a picture of a QR code with a camera and this decoder will scan the QR code, try to read it and show what data is in the QR code. There is no mobile app. You have to use it directly online.

QrCode Decoder

There are numerous other QR code extractors, so many I definitely can not discuss them all in one article! These QR code extractor tools have specific supported formats. You may have specific requirements or need an API or library to integrate the QRCode Extractor function into your application. Maybe you want to develop your own QRCode Extractor.

Create Your Own QR Code Extractor

You can create your own QR Code Scanner using C# and any .NET Platform. You can create your own online QR Code extractor or Windows app for reading QR codes. IronSoftware provides a very useful library for this purpose named IronBarcode.

IronBarcode

IronBarcode is a library developed and maintained by Iron Software to help C# software engineers read barcodes and QR codes in .NET Applications and websites to read and write barcodes. Reading or writing barcodes requires only a single line of code with IronBarcode.

IronBarcode Excels at:

Reading single or multiple barcodes and QR codes from images or PDFs.
Image correction for skew, alignment, noise, low resolution, contrast, etc.
Generating barcodes and applying them to images or PDF documents.
Embedding barcodes into HTML documents.
Designing barcodes and adding comment text.
QR Code Writing allows adding logos, colors and advanced QR alignment.

Let's learn how it works.

First, we need to install the IronBarcode Library in our existing codebase or create a new project. To install IronBarcode, run the following command in the package manager console.

Install-Package BarCode

This command will install IronBarcode in your project. Now we can use it to extract the QR code.

First of all, we need to add the following namespace.

using IronBarCode;

using IronBarCode;

Imports IronBarCode

VB C#

Now, we will use its functions to read the following QR code from the image file.

QrCode Decoder

Write the following code to read the above QR code.

var qrCodeValue = BarcodeReader.ReadASingleBarcode(@"D:\Iron Software\QRCodes\qrCode.png");
Console.WriteLine(qrCodeValue);

var qrCodeValue = BarcodeReader.ReadASingleBarcode(@"D:\Iron Software\QRCodes\qrCode.png");
Console.WriteLine(qrCodeValue);

Dim qrCodeValue = BarcodeReader.ReadASingleBarcode("D:\Iron Software\QRCodes\qrCode.png")
Console.WriteLine(qrCodeValue)

VB C#

ReadAsSingleBarcode provided by the BarcodeReader class takes the QRCode Image Path as an argument and returns the encoded message. It is very fast and can read QR codes in almost every kind of format. It can also read QR codes with logos as we have done in our example.

This barcode library also allows us to create QR codes and barcodes with or without logos, colors of our choice and specific formats. It is fast, easy to use, free for development and offers greater efficiency. It can be used for developing mobile, web and desktop-based QR code extractors, scanners or creators. You can visit this link to get complete instructions on how to use IronBarcode.

Summary

In this tutorial, we have presented some useful QR Code extractors. We have also discussed the IronBarcode Library, which is written in C# and provides functions that help us create QR codes and barcodes with just a single line of code. It also allows us to save the QR code or barcode in our desired file format.