Excel documents power every business process imaginable—from financial reports and data dashboards to engineering logs and HR workflows. But viewing and interacting with .xls, .xlsx, and even .ods files has traditionally required installing Microsoft Excel or relying on limited browser plugins.

Doconut Excel viewer

With Doconut, that’s no longer the case. Our all-in-one .NET document viewer SDK brings real Excel functionality to your apps—with no Office dependency required.

⚙️ Supported Excel Formats

  • .XLS (Legacy Excel 97-2003)
  • .XLSX (Modern Office Open XML)
  • .ODS (OpenDocument Spreadsheet—used in LibreOffice & OpenOffice)

Whether your users are opening modern Excel reports or older files from archived systems, Doconut renders them with full fidelity, including formulas, formatting, and embedded charts.

✅ Doconut Excel Viewer Features

Feature Description
Cell Formatting Support Bold, italics, cell colors, number formatting—all rendered precisely
Frozen Rows/Columns Maintains frozen panes for accurate spreadsheet navigation
Charts & Graphics Line, bar, pie, and combo charts displayed as seen in Excel
ODS Compatibility Ideal for businesses using LibreOffice/OpenOffice as Excel alternatives

🌍 Use Cases for Doconut’s Excel Viewer

  • ERP & Business Intelligence Systems: Show reports from BI tools directly in your portal
  • Document Management Software (DMS): Let users preview spreadsheets without downloading
  • Cloud SaaS Apps: Integrate secure Excel viewing in multitenant platforms
  • Audit & Compliance Tools: Maintain spreadsheet history with no third-party dependencies

🖥️ Fully Integrates with Your Stack

  • Works with .NET Core, .NET Framework, ASP.NET MVC, Blazor, and even WPF
  • Host it on-prem, in Docker, or in your cloud-based app
  • Secure: no third-party server uploads; everything runs where you control

🚀 Fast, Scalable & Lightweight

  • Load large .xlsx reports in under a second
  • Minimal memory usage—optimized for both server and client apps
  • Built-in caching for frequently accessed spreadsheets

🔧 Designed for Developers

  • Intuitive .NET API with clean method names
  • No Excel Interop or COM components
  • Supports C#, VB.NET, F#, and any language on the .NET runtime
  • Full documentation and demo projects included

🔗 Try It Now

Want to test how Doconut handles your most complex Excel documents?

  1. Visit Doconut.com and request the Excel Viewer demo.
  2. Upload your .xlsx, .xls, or .ods file.
  3. See charts, merged cells, and formatting come to life—right in your browser.

Or integrate the SDK directly into your application with a free trial license.

🧠 Final Thoughts

Excel files are more than just numbers—they’re the foundation of modern business data. Whether you’re building a portal, desktop utility, or cloud dashboard, Doconut empowers you to bring Excel viewing to your users without compromise.

No Office installation. No security risks. Just pure .NET-powered document viewing.

Doconut: The smarter way to handle Excel files in .NET.