Converting PDF documents into HTML is essential for content sharing, archiving, and publishing online. HTML offers flexible formatting and responsiveness that static PDFs cannot. This article demonstrates how to convert PDF to HTML in C# .NET online, a robust tool for document transformation.

PDF to HTML REST API

The Aspose.PDF Cloud SDK for .NET allows developers to transform PDFs into clean, responsive HTML pages. Key features include:

Key Features:

  • Preserves Layout: Maintains fonts, images, tables, and structure.
  • Responsive HTML Output: Optimized for web and mobile browsers.
  • Output Customization: Choose to split HTML per page or generate a single file.
  • Cloud-Based: Easily accessible across platforms with no local dependencies.

Prerequisites:

To begin:

Install the official SDK from NuGet:

Install-Package Aspose.PDF-Cloud

Register at Aspose Cloud Dashboard to get your Client ID and Client Secret.

Convert PDF to HTML in C#

Below is a simple example showing how to use the .NET SDK to convert a PDF document into HTML:

  • Firstly, create an instance of Configuration where we pass client credentials.
  • Secondly, initialize an object of PdfApi while passing Configuration object.
  • Thirdly, create an object of PutPdfInRequestToHtml where we define resultant HTML file.
pdf to html converter

Image:- A preview of PDF to HTML conversion.

Export PDF to HTML using cURL

For command-line enthusiasts, here’s how you can use cURL to convert PDF to HTML via REST API.

Step 1. Get Access Token:

curl -v "https://api.aspose.cloud/connect/token" \
 -X POST \
 -d "grant_type=client_credentials&client_id=YOUR_CLIENT_ID&client_secret=YOUR_CLIENT_SECRET" \
 -H "Content-Type: application/x-www-form-urlencoded" \
 -H "Accept: application/json"

Step 2. Convert PDF to HTML:

curl -v "https://api.aspose.cloud/v3.0/pdf/{inputPDF}/convert/html?compressSvgGraphicsIfAny=false&documentType=Html5&fixedLayout=true&splitIntoPages=false&rasterImagesSavingMode=AsPngImagesEmbeddedIntoSvg&removeEmptyAreasOnTopAndBottom=true&flowLayoutParagraphFullWidth=true" \
-X GET \
-H  "accept: multipart/form-data" \
-H  "authorization: Bearer {ACCESS_TOKEN}" \
-o "Converted.zip"

Replace {ACCESS_TOKEN} and inputPDF with your actual token and PDF file available in cloud storage.

Try Online PDF to HTML Converter

Want to test the feature without writing code? Try our online PDF to HTML converter, built on the same API.

pdf to html

Free PDF to HTML Converter App.

Conclusion

With .NET REST API, developers can quickly transform static PDFs into responsive HTML content. This helps streamline document publishing workflows for websites, CMS platforms, and online archives.

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