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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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Check the Latest Product Releases, Event News, And Other Notifications
TUTORIALS
A Collection of Tutorials to Help You Use Our Libraries Easily
  • 07/04
    2025
    Send Email in C# via SMTP – HTML Format and File Attachment
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    2025/07/04
    Sending emails from a C# application is a common task in business and enterprise development. Whether you're delivering a project update, sending alerts, or automating reporting workflows, reliable...
  • 07/03
    2025
    How to Read Barcodes in Python: From Image Files or Bytes
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    2025/07/03
    Modern business systems, from retail checkout lanes to warehouse inventory tracking, rely heavily on barcode scanning, and Python-based solutions have become a popular choice due to their...
  • 05/30
    2025
    Save Excel Charts as Images (JPG/PNG) – Manual, VBA & C#
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    2025/07/03
    Excel charts are excellent tools for presenting data clearly and effectively. However, when you need to use them outside of Excel — such as in presentations, reports, or websites — it becomes...
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Believe The Users

It May Help You to Make the Right Decision.

Thank you so much for the information and the hotfix of Spire.Doc!
I just tested the hotfix and all issues seem to be resolved. I am very happy that your developers were able to solve these layout problems (to be honest, I didn't expect the problems could be solved).
Peter S.Noerr
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
It seems your Spire.PDFViewer component was precisely what we needed. And your demo included in the installer was very much helpful.
Our solution including your Pdf viewer is fine for now.
Jiri MerinskyASV Nachod
 
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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