Create, edit, and export VSDX Visio diagrams in .NET

OfficeIMO.Visio creates, edits, inspects, validates, and exports .vsdx diagrams without COM automation and without Microsoft Visio installed. Use a diagram builder for common topology and process models, or work directly with pages, shapes, connectors, layers, Shape Data, containers, comments, and metadata.

Choose your workflow

You need to	Start here
Generate flowcharts, architectures, networks, org charts, sequences, timelines, or generic graphs	Diagram builders
Load a VSDX, select and update shapes, maintain metadata, or validate output	Editing and validation
Use built-in, installed, or external VSSX/VSTX shapes	Stencils and catalogs
Produce SVG, PNG, JPEG, TIFF, or WebP previews without Visio	Image export

What the package handles

VSDX document and page creation, loading, editing, saving, and validation
shapes, text, styles, connection points, connectors, routing hints, labels, hyperlinks, and Shape Data
layers, containers, comments, metadata, and topology queries
fluent builders for common business and technical diagram types
generated catalogs, installed Visio stencils, external VSSX/VSTX packs, and stencil migration planning
headless SVG, PNG, JPEG, TIFF, and lossless WebP export

Quick start

using OfficeIMO.Visio;
using OfficeIMO.Visio.Diagrams;

VisioDocument.Create("topology.vsdx")
    .ArchitectureDiagram("System Overview", diagram => diagram
        .Title()
        .Legend()
        .Theme(VisioStyleTheme.Technical())
        .Actor("users", "Users", 0, 1)
        .Gateway("gateway", "Gateway", 1, 1)
        .Service("api", "API", 2, 1)
        .Database("database", "Database", 3, 1)
        .DataFlow("users", "gateway", "HTTPS")
        .ControlFlow("gateway", "api", "route")
        .DataFlow("api", "database", "SQL"))
    .Save();

Run the architecture example to inspect a generated VSDX and validation result. The Visio API reference contains the complete lower-level model.