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Creating Word Documents Without Microsoft Word Installed

A step-by-step tutorial showing how to create professional Word documents with paragraphs, tables, and images using OfficeIMO.Word in C#.

One of the first practical questions teams ask is whether they can generate Word documents on a server without installing Office. With OfficeIMO.Word, the answer is yes for standard Open XML .docx workflows, and the basic document assembly path is quite small.

Installation

Add the NuGet package to your project:

dotnet add package OfficeIMO.Word

That is it. No COM references, no Office PIA assemblies, no registry hacks.

Creating Your First Document

using OfficeIMO.Word;

using var doc = WordDocument.Create("Report.docx");

// Title
var title = doc.AddParagraph("Quarterly Sales Report");
title.Bold = true;
title.FontSize = 24;
title.FontFamily = "Calibri";

// Body text
doc.AddParagraph("This report summarises sales performance for Q1 2025. " +
    "All figures are expressed in USD unless otherwise noted.");

The WordDocument.Create call initialises an in-memory DOCX package. Nothing is written to disk until you call Save().

Adding a Table

Tables are built directly in the document model. A small row-and-column example looks like this:

var table = doc.AddTable(4, 3);

// Header row
table.Rows[0].Cells[0].Paragraphs[0].Text = "Region";
table.Rows[0].Cells[1].Paragraphs[0].Text = "Revenue";
table.Rows[0].Cells[2].Paragraphs[0].Text = "Growth";

// Data rows
string[][] data = {
    new[] { "North America", "$1.2M", "+8%" },
    new[] { "Europe",        "$0.9M", "+5%" },
    new[] { "Asia-Pacific",  "$0.6M", "+12%" },
};

for (int r = 0; r < data.Length; r++)
    for (int c = 0; c < data[r].Length; c++)
        table.Rows[r + 1].Cells[c].Paragraphs[0].Text = data[r][c];

Inserting an Image

Adding a logo or chart image is similarly direct:

var paragraph = doc.AddParagraph();
paragraph.AddImage("chart.png", width: 400, height: 250);

OfficeIMO embeds the image directly inside the DOCX archive, so the file is fully self-contained.

Headers and Footers

If your document needs repeated chrome, you can add headers and footers and then populate the default sections:

doc.AddHeadersAndFooters();
doc.Header.Default.AddParagraph("Contoso Ltd. — Confidential");
doc.Footer.Default.AddParagraph("Page ");

Saving

When you are finished assembling the document, call Save:

doc.Save();

If you need a Stream instead of a file, use Save(stream) to write directly to a MemoryStream for HTTP responses or blob storage uploads.

Full Example

using OfficeIMO.Word;

using var doc = WordDocument.Create("Report.docx");

var title = doc.AddParagraph("Quarterly Sales Report");
title.Bold = true;
title.FontSize = 24;

doc.AddParagraph("Generated automatically by OfficeIMO.");

var table = doc.AddTable(2, 2);
table.Rows[0].Cells[0].Paragraphs[0].Text = "Metric";
table.Rows[0].Cells[1].Paragraphs[0].Text = "Value";
table.Rows[1].Cells[0].Paragraphs[0].Text = "Total Revenue";
table.Rows[1].Cells[1].Paragraphs[0].Text = "$2.7M";

doc.Save();
Console.WriteLine("Report.docx created successfully.");

Run this with dotnet run and inspect the resulting file in Word or another OOXML-capable editor. OfficeIMO writes standard Open XML packages, but exact visual fidelity still depends on the viewer, installed fonts, and the specific feature set used in the document.

Next Steps

From here, the next useful steps are usually styles, richer table formatting, images, section/page setup, or batch document assembly. If a workflow detail is unclear, the docs, API reference, examples, and tests are the best current references.

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