Install-Package NPOI -Version 2.5.5
dotnet add package NPOI --version 2.5.5
<PackageReference Include="NPOI" Version="2.5.5" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add NPOI --version 2.5.5
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: NPOI, 2.5.5"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install NPOI as a Cake Addin
#addin nuget:?package=NPOI&version=2.5.5

// Install NPOI as a Cake Tool
#tool nuget:?package=NPOI&version=2.5.5
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Don't forget to wash your hand during pandamic season.

Difference between Dotnetcore.NPOI and NPOI

There are no supported framework assets in this package.

Learn more about Target Frameworks and .NET Standard.

NuGet packages (535)

Showing the top 5 NuGet packages that depend on NPOI:

Package Downloads

Convention-based mapper between strong typed object and Excel data via NPOI.


Map POCOs to Excel files


Consumes a generic inventory document store to be used in PMoney applications.


Proyecto que permite exportación de listas genericas (IEnumerable) a Excel


Extension for FileHelpers to support Excel read/write operations using NPOI Library

GitHub repositories (33)

Showing the top 5 popular GitHub repositories that depend on NPOI:

Repository Stars
Various helper class
visualized crawler & ETL IDE written with C#/WPF
Open source, headless, multi-tenant eCommerce platform built with .NET Core, MongoDB, AWS DocumentDB, Azure CosmosDB, Vue.js.
基于 .NET Core MVC 的权限管理系统,代码易读易懂、界面简洁美观。演示版
Version Downloads Last updated
2.5.5 271,109 10/25/2021
2.5.4 530,882 7/29/2021
2.5.3 862,406 4/18/2021
2.5.2 1,059,413 12/5/2020
2.5.1 2,693,501 4/4/2020
2.4.1 4,354,538 12/18/2018
2.3.0 2,553,674 3/20/2017
2.2.1 1,245,547 5/31/2016 835,623 2/22/2015
2.1.3 104,147 12/31/2014
2.0.6 318,082 4/12/2014
1.2.5 248,759 7/29/2012
1.2.4 26,383 11/15/2011
1.2.3 21,685 1/12/2011

#617 Unreadable content detected for xlsx if it contains additional TextBox
#555 BinaryFormatter issue in net5.0
#216 XSSFHyper Link with chinese charset issue
#614 NPOI cannot open some XLS files from Stream
#238 Add new method: XWPFDocument.ChangeOrientation
#590 ST_CfvoType missing autoMin and autoMax
#521 Performance of creating new cells
#434 SXSSFWorkbook possible performance overhead
#570 avoid NotImplementedException for ExternalLinks
#504 Docx File corruption due to the image wrapping (fix again for w14 attributes)
#317 XSSFFont CloneStyleFrom is linking two fonts instead of creating a copy
#519 Get a copy of the CT_Border when about to mutate it
#635 MathX - RoundUp - Bug with double conversion
#131 Add Title to NPOI.SS.UserModel.IChart
#248 make GetCTChart() and GetCTChartSpace public
#599 Corrupted output when XLSX file with "power" symbol in text box is saved
#287 Null Reference Exception in XSSFSheet.CopySheetImages if there are charts in the original sheet
#454 Incorrect intersect validation checking for merged regions
#678 calling XWPFHeaderFooterPolicy.CreateWatermark corrupts the word file

61064 Support behavior of function CEILING in newer versions of Microsoft Excel
63268 Fix issue with CellUtil.setFont adding unnecessary styles
61652 Attempting to getConditionalFormattingForCell causes NPE
65467 Support IFNA function
65475 SUMIF and SUMIFS functions do not properly handle #N/A values
64605 #595 XWPFRun.FontSize support float
62040 Quotient.evaluate function does not accept cell refences
56392 IllegalArgumentException in IdentifierManager / XWPFDocument
github-150 Add XWPFPicture getWidth and getDepth methods
github-151 Add XWPFRun getStyle method
github-153 Add XWPFParagraph createHyperlinkRun method