Compare HTML in C#. Find differences between HTML files. HTML Comparison API.

Find Differences in HTML Documents with C#

Optimize your workflow by programmatically comparing HTML documents with 'Wordize for .NET'. Whether you're reviewing two versions of a HTML file or comparing reports in HTML format, our solution will detect all differences in text, formatting, and structure with professional accuracy. The C# API will identify and highlight all changes, helping you save time on manual reviews and ensuring the most accurate results.

Key Features

Character or word-level document comparison for highly accurate results.
Detection of changes in text, formatting, and structural elements, including headings and tables.
Flexible customization of comparison methods using parameters such as ignoring comments, formatting, or headers/footers.

Usage Scenarios

Legal documents. Compare multiple versions of contracts or agreements to ensure no edits are missed.
Corporate reports. Quickly and accurately track updates in business documents or internal reports.
Educational content. Compare educational materials to identify differences.

Wordize provides developers with powerful tools to automate document comparison processes. With flexible settings, you can customize comparisons according to your needs. By integrating Wordize into your .NET projects, developers can create robust solutions for content review and document analysis.

Upload two documents in HTML format, adjust the comparison parameters according to your requirements, and let the Wordize SDK find the changes. Download the comparison results to review the detected changes yourself.

Run code

Upload the source document

Upload the second document to compare with the source

Select the target format from the list

using Wordize.Comparing;

Comparer.Compare("Input1.html", "Input2.html",
    "Output.html", "Author Name", DateTime.Now);

							using Wordize.Comparing;

Comparer.Compare("Input1.html", "Input2.html",
    "Output.html", "Author Name", DateTime.Now);

							using Wordize.Comparing;
using Wordize.Saving;

var imageStreams = Comparer.CompareToImages("Input1.html", "Input2.html", 
    new ImageSaveOptions(SaveFormat.Html), "Author Name", DateTime.Now);

foreach (var (stream, page) in imageStreams.Select((s, i) => (s, i)))
{
    using var _ = stream;
    stream.Position = 0;
    
    using var file = File.Create($"Output_{page + 1}.html");
    stream.CopyTo(file);
}
			

					Run code
				

How to compare HTML in C#

Install Wordize for .NET.
Add a library reference (import the library) to your C# project.
Call the Compare method to find differences between HTML documents.
Get the result of your HTML comparison in a separate file.

System Requirements

Our product is fully cross-platform and supports all major .NET implementations:

.NET ≥ 5.0
.NET Core ≥ 2.0
.NET Standard ≥ 2.0
.NET Framework ≥ 3.5
MonoMac
MonoAndroid
Xamarin

As far as .NET code doesn't depend on the underlying hardware or operating system, but only on a Virtual Machine, you are free to develop any kind of software for Windows, macOS, Android, iOS and Linux. Just make sure you have installed the corresponding version of .NET Framework, .NET Core, Windows Azure, Mono or Xamarin.

We recommend using Microsoft Visual Studio, Xamarin, and MonoDevelop integrated development environments to create C#, F#, VB.NET applications.