Convert PDF to Base64
Curtis Chau
Updated: August 2, 2026
How can I convert a PDF to Base64?
The PdfDocument object doesn't contain a direct property to get Base64. However, you can get the byte array, which can then be used to obtain the Base64 string.
using System;
using IronPdf;
class Program
{
static void Main()
{
// Load the specified PDF file into a PdfDocument object
var pdf = PdfDocument.FromFile("MyPDF.pdf");
// Get the binary data (byte array) from the PDF document
var byteArray = pdf.BinaryData;
// Convert the byte array to a Base64 string
var base64Result = Convert.ToBase64String(byteArray);
// Output the Base64 result
Console.WriteLine("Base64 of PDF: " + base64Result);
}
}C#
Explanation:
PdfDocumentInitialization: ThePdfDocumentobject is loaded from the file name of the PDF you want to convert usingPdfDocument.FromFile.BinaryDataRetrieval: It retrieves the binary data (as a byte array) of the given PDF.- Base64 Conversion: The
Convert.ToBase64Stringmethod is used to convert the byte array into a Base64 string. - Output Base64 String: The Base64 encoded string is printed to the console for verification.
Technical Writer
Curtis Chau holds a Bachelor’s degree in Computer Science (Carleton University) and specializes in front-end development with expertise in Node.js, TypeScript, JavaScript, and React. Passionate about crafting intuitive and aesthetically pleasing user interfaces, Curtis enjoys working with modern frameworks and creating well-structured, visually appealing manuals.
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