Perform OCR in Mac

18 Feb 20255 minutes to read

The Syncfusion^® .NET OCR library used to extract text from scanned PDFs and images in the Mac application.

Steps to perform OCR on entire PDF document in Mac

• Visual Studio
• Visual Studio Code

Prerequisites:

• Install .NET SDK: Ensure that you have the .NET SDK installed on your system. You can download it from the .NET Downloads page.
• Install Visual Studio: Download and install Visual Studio Code from the official website.

Step 1: Create a new .NET Core console application project.

Step 2: Select the project version.

Step 3: Install the Syncfusion.PDF.OCR.Net.Core NuGet package as a reference to your project from NuGet.org.

NOTE

Starting with v16.2.0.x, if you reference Syncfusion^® assemblies from the trial setup or from the NuGet feed, you also have to add “Syncfusion.Licensing” assembly reference and include a license key in your projects. Refer to this link to learn about registering the Syncfusion^® license key in your application to use our components.

Step 4: Include the following Namespaces in the Program.cs file.

C#

using Syncfusion.OCRProcessor;

using Syncfusion.Pdf.Parsing;

Step 5: Add the following code sample to the Program.cs file to Perform OCR in .NET Core application on Mac OS.

C#

//Initialize the OCR processor.
using (OCRProcessor processor = new OCRProcessor())
{
   FileStream fileStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
   //Load a PDF document.
   PdfLoadedDocument lDoc = new PdfLoadedDocument(fileStream);
   //Set the OCR language to be processed.
   processor.Settings.Language = Languages.English;
   //Process OCR by providing the PDF document.
   processor.PerformOCR(lDoc);
   //Create memory stream.
   MemoryStream stream = new MemoryStream();
   //Save the document to the memory stream.
   lDoc.Save(stream);
   lDoc.Close();
   //Set the position as '0'.
   stream.Position = 0;
   //Download the PDF document in the browser.
   FileStreamResult fileStreamResult = new FileStreamResult(stream, "application/pdf");
   fileStreamResult.FileDownloadName = "OCR.pdf";
   return fileStreamResult;
}

Step 6: Build the project.

Click on Build > Build Solution or press Ctrl + Shift + B to build the project.

Step 7: Run the project.

Click the Start button (green arrow) or press F5 to run the app.

Prerequisites:

• Install .NET SDK: Ensure that you have the .NET SDK installed on your system. You can download it from the .NET Downloads page.
• Install Visual Studio Code: Download and install Visual Studio Code from the official website.
• Install C# Extension for VS Code: Open Visual Studio Code, go to the Extensions view (Ctrl+Shift+X), and search for ‘C#’. Install the official C# extension provided by Microsoft.

Step 1: Open the terminal (Ctrl+` ) and run the following command to create a new .NET Core console application project.

dotnet new console -n CreatePdfMacOSApp

Step 2: Replace **CreatePdfMacOSApp with your desired project name.

Step 3: Navigate to the project directory using the following command

cd CreatePdfMacOSApp

Step 4: Use the following command in the terminal to add the Syncfusion.PDF.OCR.Net.Core package to your project.

dotnet add package Syncfusion.PDF.OCR.Net.Core

NOTE

Starting with v16.2.0.x, if you reference Syncfusion^® assemblies from the trial setup or from the NuGet feed, you also have to add “Syncfusion.Licensing” assembly reference and include a license key in your projects. Refer to this link to learn about registering the Syncfusion^® license key in your application to use our components.

Step 5: Include the following Namespaces in the Program.cs file.

C#

using Syncfusion.OCRProcessor;

using Syncfusion.Pdf.Parsing;

Step 6: Add the following code sample to the Program.cs file to Perform OCR in .NET Core application on Mac OS.

C#

//Initialize the OCR processor.
using (OCRProcessor processor = new OCRProcessor())
{
   FileStream fileStream = new FileStream("Input.pdf", FileMode.Open, FileAccess.Read);
   //Load a PDF document.
   PdfLoadedDocument lDoc = new PdfLoadedDocument(fileStream);
   //Set the OCR language to be processed.
   processor.Settings.Language = Languages.English;
   //Process OCR by providing the PDF document.
   processor.PerformOCR(lDoc);
   //Create memory stream.
   MemoryStream stream = new MemoryStream();
   //Save the document to the memory stream.
   lDoc.Save(stream);
   lDoc.Close();
   //Set the position as '0'.
   stream.Position = 0;
   //Download the PDF document in the browser.
   FileStreamResult fileStreamResult = new FileStreamResult(stream, "application/pdf");
   fileStreamResult.FileDownloadName = "OCR.pdf";
   return fileStreamResult;
}

Step 7: Build the project.

Run the following command in terminal to build the project.

dotnet build

Step 8: Run the project.

Run the following command in terminal to build the project.

dotnet run

By executing the program, you will get a PDF document as follows.

A complete working sample can be downloaded from GitHub.

Click here to explore the rich set of Syncfusion^® PDF library features.