PdfDocument

namespace ObviousPDF — The main entry point for creating PDF files.

var doc = new PdfDocument();
doc.Info.Title = "My Document";
doc.Language = "en-US";
doc.Save("output.pdf");

Properties

Methods

PdfPageBuilder

namespace ObviousPDF — Fluent API for adding content to a single PDF page.

Text Methods

Vector Graphics Methods

Image Methods

Transform & State Methods

Clipping Methods

Annotation Methods

Form Field Methods

Tagged Content (Accessibility) Methods

Pattern, Shading & Layer Methods

PdfTextOptions

namespace ObviousPDF — Configuration for text rendering.

PdfDrawOptions

namespace ObviousPDF — Configuration for vector graphics rendering.

PdfColor

namespace ObviousPDF — Represents a colour in DeviceGray, DeviceRGB, or DeviceCMYK.

// RGB (each 0.0–1.0)
var red = new PdfColor(1.0, 0.0, 0.0);

// Named factory methods
var gray = PdfColor.FromGray(0.5);
var blue = PdfColor.FromRgb(0.0, 0.2, 0.8);
var cyan = PdfColor.FromCmyk(1.0, 0.0, 0.0, 0.0);

Factory Methods

Properties

PdfImage

namespace ObviousPDF — Loads and represents JPEG and PNG images for embedding.

PdfEmbeddedFont

namespace ObviousPDF — Loads TrueType/OpenType fonts for embedding with automatic subsetting.

StandardFont

namespace ObviousPDF.Fonts — The 14 standard PDF fonts. ObviousPDF auto-embeds SIL OFL substitutes.

PageSize

namespace ObviousPDF — Predefined page size tuples (width × height in points).

PdfDocumentInfo

namespace ObviousPDF — Document metadata.

PdfFormXObject

namespace ObviousPDF — Reusable content stream for headers, footers, watermarks.

var header = doc.CreateFormXObject(612, 35);
header.FillRectangle(0, 0, 612, 35, opts);
header.AddText("Header Text", 72, 10, textOpts);

// Place on every page
page.AddFormXObject(header, 0, 757);

PdfPathBuilder

namespace ObviousPDF — Low-level path construction via BeginPath().

page.BeginPath(new PdfDrawOptions { FillColor = blue })
    .MoveTo(300, 440)
    .CurveTo(350, 520, 440, 480, 420, 440)
    .ClosePath()
    .FillAndStroke();

PdfStructureElement

namespace ObviousPDF.Accessibility — A node in the PDF structure tree (ISO 32000 §14.7.2).

Properties

Methods

StructureType (40+ types)

namespace ObviousPDF.Accessibility — All ISO 32000 structure types.

PdfAccessibilityChecker

namespace ObviousPDF.Accessibility — Validates 43+ PDF/UA, WCAG 2.2, and ISO 32000 requirements.

var checker = new PdfAccessibilityChecker();
var report = checker.Check(doc);

Console.WriteLine(report.IsFullyCompliant);  // true/false
Console.WriteLine(report.ToString());        // Human-readable report

foreach (var issue in report.NonCompliantItems)
    Console.WriteLine($"  ❌ {issue}");

PdfAccessibilityReport

PdfArtifactType

PdfTableScope

PdfPhoneticAlphabet

PdfColorContrast

Static utility for WCAG contrast checking.

Annotations

namespace ObviousPDF

PdfAnnotationType

PdfStampIcon

PdfAcroField

namespace ObviousPDF — Interactive form field configuration.

var formElement = root.AddChild(StructureType.Form);
var field = new PdfAcroField(PdfAcroFieldType.Text,
    "fullName", 72, 675, 250, 20)
{
    Tooltip = "Full name (required)",
    Required = true
};
page.AddTaggedAcroField(formElement, field);

PdfAcroFieldType

PdfEncryption

namespace ObviousPDF — Password and permission settings.

PdfDigitalSignature

namespace ObviousPDF — PKCS#7/CMS digital signature configuration.

Visual Effects

PdfShadingPattern

namespace ObviousPDF — Axial (linear) and radial gradient definitions.

// Linear gradient
var linear = new PdfShadingPattern(
    72, 650, 300, 650,
    PdfColor.FromRgb(0.1, 0.3, 0.8),
    PdfColor.FromRgb(0.4, 0.9, 0.6));
page.FillWithShading(linear, 72, 620, 228, 60);

// Radial gradient
var radial = PdfShadingPattern.RadialGradient(
    440, 650, 0, 70,
    PdfColor.FromRgb(1, 0.9, 0.2),
    PdfColor.FromRgb(0.9, 0.2, 0.1));
page.FillWithShading(radial, 370, 580, 140, 140);

PdfTilingPattern

namespace ObviousPDF — Repeating tile patterns for fills.

var stripe = new PdfTilingPattern(10, 10);
stripe.FillRectangle(0, 0, 10, 10, lightColor);
stripe.FillRectangle(0, 0, 5, 10, darkColor);
page.FillWithPattern(stripe, 72, 480, 228, 80);

Document Features

PdfOutlineItem

Bookmarks for sidebar navigation.

PdfPageLabelStyle

PdfOptionalContentGroup

Toggle-able layers (OCG). Created via doc.CreateOptionalContentGroup(name, visible).

Conformance Levels

PdfAConformanceLevel (Archival)

PdfUaConformanceLevel (Accessibility)

Coordinate System