PDF for .NET Overview
Key Features
Quick Start
View Layouts
Work with Documents
Page
Text
Images
Attachments
Chart and Diagram Rendering and Export
- Output Formats
- Render to PDF
- Render to DOCX or RTF
- Render to PNG
- Render to SVG
- Render a Diagram
- Rendering Units
Notes
Bookmarks
HyperLinks
Graphics
Signature
Overlays
Security and Permissions
Metafiles
PDF/A Conformance Levels
Work with Web Applications

Rendering Units

The rendering APIs use two unit systems:

API	Unit	Based on
`Render` rectangle (`x`, `y`, `width`, `height`)	Points	1/72 inch
`BitmapGraphicsRendering`, `SvgGraphicsRendering`, `SvgRendering` dimensions	Pixels	1/96 inch

Use C1XLBook.TwipsToPixels to convert points to pixels:

int widthPx = C1XLBook.TwipsToPixels(20 * widthInPoints);

C1XLBook.TwipsToPixels is available in the C1.Excel namespace. In the .NET Standard build, it uses a fixed 96 DPI, so the conversion is pixels = points × 96 / 72 (equivalently, twips / 15).