How to Draw Lines and Rectangles on PDFs
Drawing lines and rectangles onto a PDF document refers to the process of adding geometric shapes, specifically lines and rectangles, to the content of a PDF file. This is often done programmatically using a programming language like C# or VB.NET and a library like IronPDF.
When you draw a line, you create a visible line segment with specified starting and ending points. Similarly, when you draw a rectangle, you define a four-sided shape with specified dimensions and position.
How to Draw Lines and Rectangles on PDFs in C#
- Download the C# library for drawing lines and rectangles
- Import the target PDF document or render it from HTML
- Use the
DrawLinemethod to add lines to the PDF - Use the
DrawRectanglemethod to add rectangles - Export the edited PDF document
Install with NuGet
Install-Package IronPdf
Install with NuGet
Install-Package IronPdf
Start using IronPDF in your project today with a free trial.
Check out IronPDF on Nuget for quick installation and deployment. With over 8 million downloads, it's transforming PDF with C#.
Consider installing the IronPDF DLL directly. Download and manually install it for your project or GAC form: IronPdf.zip
Draw Line Example
By utilizing the DrawLine method available for the PdfDocument object, you can add lines to an existing PDF. Using the Color class offered by IronDrawing opens up the possibility to apply a line with a color from a HEX color code.
:path=/static-assets/pdf/content-code-examples/how-to/draw-line-and-rectangle-draw-line.csusing IronPdf;
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>testing</h1>");
// Configure the required parameters
int pageIndex = 0;
var start = new IronSoftware.Drawing.PointF(200,150);
var end = new IronSoftware.Drawing.PointF(1000,150);
int width = 10;
var color = new IronSoftware.Drawing.Color("#000000");
// Draw line on PDF
pdf.DrawLine(pageIndex, start, end, width, color);
pdf.SaveAs("drawLine.pdf");Imports IronPdf
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>testing</h1>")
' Configure the required parameters
Private pageIndex As Integer = 0
Private start = New IronSoftware.Drawing.PointF(200,150)
Private [end] = New IronSoftware.Drawing.PointF(1000,150)
Private width As Integer = 10
Private color = New IronSoftware.Drawing.Color("#000000")
' Draw line on PDF
pdf.DrawLine(pageIndex, start, [end], width, color)
pdf.SaveAs("drawLine.pdf")Output PDF
Draw Rectangle Example
To add rectangles to PDFs, use the DrawRectangle method. Once the PDF document is opened or rendered, this method is available for the PdfDocument object. Easily configure the coordinates, width, and height for the rectangle with the RectangleF class offered by IronDrawing.
:path=/static-assets/pdf/content-code-examples/how-to/draw-line-and-rectangle-draw-rectangle.csusing IronPdf;
ChromePdfRenderer renderer = new ChromePdfRenderer();
PdfDocument pdf = renderer.RenderHtmlAsPdf("<h1>testing</h1>");
// Configure the required parameters
int pageIndex = 0;
var rectangle = new IronSoftware.Drawing.RectangleF(200, 100, 1000, 100);
var lineColor = new IronSoftware.Drawing.Color("#000000");
var fillColor = new IronSoftware.Drawing.Color("#32AB90");
int lineWidth = 5;
// Draw rectangle on PDF
pdf.DrawRectangle(pageIndex, rectangle, lineColor, fillColor, lineWidth);
pdf.SaveAs("drawRectangle.pdf");Imports IronPdf
Private renderer As New ChromePdfRenderer()
Private pdf As PdfDocument = renderer.RenderHtmlAsPdf("<h1>testing</h1>")
' Configure the required parameters
Private pageIndex As Integer = 0
Private rectangle = New IronSoftware.Drawing.RectangleF(200, 100, 1000, 100)
Private lineColor = New IronSoftware.Drawing.Color("#000000")
Private fillColor = New IronSoftware.Drawing.Color("#32AB90")
Private lineWidth As Integer = 5
' Draw rectangle on PDF
pdf.DrawRectangle(pageIndex, rectangle, lineColor, fillColor, lineWidth)
pdf.SaveAs("drawRectangle.pdf")Output PDF
