Hello World — ObviousPDF Examples

📝 Hello World

The simplest possible PDF — create a single page with one line of text.

Hello World

using ObviousPDF;

// Create a new PDF document. This is the main entry point for ObviousPDF.
var doc = new PdfDocument();

// Set document metadata — good practice even for simple PDFs.
doc.Info.Title = "Hello World";
doc.Info.Author = "ObviousPDF";

// Add a US Letter page (612×792 points, the default).
// The coordinate origin (0,0) is at the bottom-left corner.
var page = doc.AddPage();

// Add text at position (72, 720) — 1 inch from the left,
// 10 inches from bottom. Default font is Helvetica 12pt black.
page.AddText("Hello, World!", 72, 720);

// Save the document to disk.
doc.Save("hello.pdf");

Imports ObviousPDF

' Create a new PDF document. This is the main entry point for ObviousPDF.
Dim doc As New PdfDocument()

' Set document metadata — good practice even for simple PDFs.
doc.Info.Title = "Hello World"
doc.Info.Author = "ObviousPDF"

' Add a US Letter page (612×792 points, the default).
' The coordinate origin (0,0) is at the bottom-left corner.
Dim page = doc.AddPage()

' Add text at position (72, 720) — 1 inch from the left,
' 10 inches from bottom. Default font is Helvetica 12pt black.
page.AddText("Hello, World!", 72, 720)

' Save the document to disk.
doc.Save("hello.pdf")

open ObviousPDF

// Create a new PDF document. This is the main entry point for ObviousPDF.
let doc = PdfDocument()

// Set document metadata — good practice even for simple PDFs.
doc.Info.Title <- "Hello World"
doc.Info.Author <- "ObviousPDF"

// Add a US Letter page (612×792 points, the default).
// The coordinate origin (0,0) is at the bottom-left corner.
let page = doc.AddPage()

// Add text at position (72, 720) — 1 inch from the left,
// 10 inches from bottom. Default font is Helvetica 12pt black.
page.AddText("Hello, World!", 72, 720)

// Save the document to disk.
doc.Save("hello.pdf")

# Load the ObviousPDF assembly
Add-Type -Path "ObviousPDF.dll"

# Create a new PDF document. This is the main entry point for ObviousPDF.
$doc = [ObviousPDF.PdfDocument]::new()

# Set document metadata — good practice even for simple PDFs.
$doc.Info.Title = "Hello World"
$doc.Info.Author = "ObviousPDF"

# Add a US Letter page (612×792 points, the default).
# The coordinate origin (0,0) is at the bottom-left corner.
$page = $doc.AddPage()

# Add text at position (72, 720) — 1 inch from the left,
# 10 inches from bottom. Default font is Helvetica 12pt black.
$page.AddText("Hello, World!", 72, 720)

# Save the document to disk.
$doc.Save("hello.pdf")

📄 Download Example PDF

Screenshot of the Hello World PDF showing a clean white US Letter page with 'Hello, World!' text in Helvetica 12pt positioned at 1 inch from the left edge and 10 inches from the bottom

You should see a plain white US Letter page with "Hello, World!" in Helvetica 12 pt near the top-left, with no other content.
File: 01_hello_world.pdf

Key Concepts

Concept	Details
Coordinate origin	Bottom-left corner of the page (0, 0)
Units	Points — 1 point = 1/72 inch
Default page size	US Letter: 612 × 792 points (8.5 × 11 inches)
Default font	Helvetica 12pt, black
Position (72, 720)	1 inch from left, 10 inches from bottom

📝 Hello World

♿ Accessibility Note

Key Concepts