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Spire.Cloud.Office
A powerful online Office viewer and editor developed by E-ICEBLUE. Integrate it into your web server or cloud application, and you'll be able to create, edit, convert, print, view and save MS Word and MS Excel compatible documents in a HTML5 browser on Windows, Linux and Mac.

Working together with Spire.Office for .NET, you can manipulate Word and Excel documents from the server-end using C# or VB.NET code, and then send the results to a browser for further editing in a visual manner...
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A professional Word .NET library designed to create, read, write, convert and print Word document files in any .NET ( C#, VB.NET, ASP.NET, .NET Core, Xamarin ) application with fast and high quality performance.
A professional Excel .NET library that can be used to create, read, write, convert and print Excel files in any type of .NET ( C#, VB.NET, ASP.NET, .NET Core, Xamarin ) application.
A professional PowerPoint® compatible library that enables developers to create, read, write, modify, convert and print PowerPoint documents in any .NET ( C#, VB.NET, ASP.NET, .NET Core, Xamarin ) application.
A professional PDF library applied to creating, writing, editing, handling and reading PDF files without any external dependencies within .NET ( C#, VB.NET, ASP.NET, .NET Core, Xamarin ) application.
A professional Email library specially designed for developers to create, read and manipulate emails in any .NET ( C#, VB.NET, ASP.NET, .Net Core, .Net Standard, MonoAndroid, Xamarin iOS ) application.
A professional barcode library specially designed for .NET developers ( C#, VB.NET, ASP.NET, .NET Core, .Net Standard, MonoAndroid, Xamarin.iOS ) to generate, read and scan 1D & 2D barcodes.
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TUTORIALS
A Collection of Tutorials to Help You Use Our Libraries Easily
  • 03/27
    2025
    C#: Convert HTML to Word
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    2025/03/27
    Converting HTML to Word documents is essential for seamless document sharing, archiving, and preserving formatting consistency. It simplifies editing, integrates smoothly with other tools, and...
  • 03/26
    2025
    Python: Apply Styles to Cells or Worksheets in Excel
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    2025/03/26
    Applying styles is one of the simplest ways to enhance the professionalism and readability of Excel spreadsheets. Excel provides a wide range of built-in styles that allow users to quickly format...
  • 03/25
    2025
    C#: Draw Text with Different Styles in PDF
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    2025/03/25
    In the realm of PDF creation and editing, the ability to draw different styles of text within a PDF can greatly enhance the visual appeal and functionality of the documents. For example, you can...
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Our Customers All Over the World, Our Products Have Been Widely-Used.
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Believe The Users

It May Help You to Make the Right Decision.

Colonial has been a satisfied customer of your Spire.PDF dll library for years; having purchased a license in February of 2015.
We use it in a variety of C# applications, both in website Save-As and automated transformative file creation application situations.
Miles ThorntonColonial
Our group was looking for a cost-effective way to add reliable barcode generation to our web application. We tried some free ones that we found to be inaccurate and put our customers at risk.
Spire.Barcode for .Net has proven to pass our test cases as well as come with a free license. Couldn't be happier!
Eric BrownChildrenSAL
Our team was in need of a .NET utility that would allow us to generate barcode images used for emailing receipts.
Spire.Barcode not only provided the ability to generate barcodes and save them as images, but offers a range of customization that suited our needs perfectly.
The fact that these services are completely free is almost too good to be true!
Kevin KelleyClarity Connect
 
Deloitte Consulting LLP purchased Spire.Office for Java to split Word documents by page breaks, merge PDF files, and implement the conversions from PDF to HTML, PDF to Word...
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Intel Corporation purchased Spire.PDF to extract images from PDF files and store them in SQL database, and find & replace hyperlinks in a PDF file. They also used Spire.PDFViewer component...
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The United Nations purchased Spire.Office for .NET to realize the functions of converting Word/Excel to PDF, converting HTML to Word, adding tables to PDF, and inserting HTML...
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Over 300, 000 developers are already using our libraries to create their amazing applications.
 

C#, VB.NET, Java, Android, Cloud Libraries for Word, Excel, PowerPoint, PDF, Barcode, Email, OCR, Etc.

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