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Create Searchable PDFs by OCR
using IronOcr;

var ocrTesseract = new IronTesseract();

using var ocrInput = new OcrInput();

ocrInput.LoadImage(@"images\page1.png");
ocrInput.LoadImage(@"images\page2.bmp");

var page = new int[]{ 2, 3 };
ocrInput.LoadImageFrames(@"images\page3.tiff", page);

ocrInput.Deskew();

var ocrResult = ocrTesseract.Read(ocrInput);

ocrResult.SaveAsSearchablePdf("searchable.pdf");
Imports IronOcr

Dim ocrTesseract = New IronTesseract()

Using ocrInput = New OcrInput()

    ocrInput.LoadImage("images\page1.png")
    ocrInput.LoadImage("images\page2.bmp")

    Dim page = New Integer() {2, 3}
    ocrInput.LoadImageFrames("images\page3.tiff", page)

    ocrInput.Deskew()

    Dim ocrResult = ocrTesseract.Read(ocrInput)

    ocrResult.SaveAsSearchablePdf("searchable.pdf")

End Using
NuGet Download
PM > Install-Package IronOcr
Create Searchable PDFs by OCR

Create Searchable PDFs by OCR

We can use Iron's advanced Tesseract engine to convert images to searchable PDFs. It can also make existing PDFs searchable.

This adds to SEO performance and internal search indexing within intranets and databases.

Explore How to Create Searchable PDFs with IronOCR
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C# NuGet Library for PDF
Install with NuGet

Version: 2026.10

PM > Install-Package IronOcr
nuget.org/packages/IronOcr/
  1. In Solution Explorer, right-click References, Manage NuGet Packages
  2. Select Browse and search "IronOCR"
  3. Select the package and install
C# PDF DLL
Download DLL

Version: 2026.10

or download Windows Installer here.

  1. Download and unzip IronOCR to a location such as ~/Libs within your Solution directory
  2. In Visual Studio Solution Explorer, right click References. Select Browse, "IronOCR.dll"

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