using ObviousPDF;
using ObviousPDF.Accessibility;

var doc = new PdfDocument();
doc.Language = "en-US";           // Required
doc.Info.Title = "My Document";   // Required
doc.DisplayDocTitle = true;       // Required
doc.PdfUaConformance = PdfUaConformanceLevel.PdfUA1;

var root = doc.EnableTaggedPdf();
var sect = root.AddChild(StructureType.Sect);
var h1 = sect.AddChild(StructureType.H1);
var para = sect.AddChild(StructureType.P);

var page = doc.AddPage();
page.AddTaggedText(h1, "Title", 72, 720,
    new PdfTextOptions {
        Font = StandardFont.HelveticaBold,
        FontSize = 24 });
page.AddTaggedText(para, "Body text.", 72, 690);
page.AddArtifactText("Page 1", 285, 30,
    PdfArtifactType.Pagination);

var report = new PdfAccessibilityChecker().Check(doc);
// report.IsFullyCompliant → true ✅

doc.Save("accessible.pdf");

using ObviousPDF;

var doc = new PdfDocument();
doc.EnableAccessibility("en-US", "My Document");
// ↑ Sets Language, Title, DisplayDocTitle, PdfUA1, tagged PDF, auto-tagging

var page = doc.AddPage();
page.AddText("Title", 72, 720,              // auto-tagged as <P>
    new PdfTextOptions { Font = StandardFont.HelveticaBold, FontSize = 24 });
page.AddText("Body text.", 72, 690);         // auto-tagged as <P>

var img = PdfImage.FromJpegFile("photo.jpg");
page.AddImage(img, 72, 500, 200, 100,
    "Photo description");                     // auto-tagged as <Figure>

page.AddArtifactText("Page 1", 285, 30,
    PdfArtifactType.Pagination);              // artifact (unchanged)

doc.Save("easy_accessible.pdf");

using ObviousPDF.Json;

// From a JSON string → byte[]
byte[] pdf = PdfJsonRenderer.Render(jsonString);

// From a .json file path → byte[]
byte[] pdf = PdfJsonRenderer.RenderFromFile("document.json");

// Build PdfDocument for further manipulation, then save yourself
PdfDocument doc = PdfJsonRenderer.BuildDocument(jsonString);
doc.Save("output.pdf");

"color": "black"                               // named
"color": { "r": 0.2, "g": 0.4, "b": 0.8 }    // DeviceRGB
"color": { "gray": 0.5 }                       // DeviceGray (0=black, 1=white)
"color": { "c": 0, "m": 0.75, "y": 1.0, "k": 0 }  // DeviceCMYK

{
  "coordinateOrigin": "topLeft",
  "tagged": true,
  "document": {
    "language": "en-US",
    "displayDocTitle": true,
    "info": { "title": "My Report" },
    "conformance": { "pdfUa": "PdfUA1" }
  },
  "fonts": [{ "id": "body", "mode": "bundled", "bundledFont": "NotoSans" }],
  "structureTree": {
    "type": "Document",
    "children": [
      { "type": "H1", "id": "h1" },
      { "type": "P",  "id": "p1" }
    ]
  },
  "pages": [{
    "size": "Letter",
    "content": [
      { "type": "text",      "structureId": "h1", "text": "Report Title",
        "x": 72, "y": 72, "options": { "fontRef": "body", "fontSize": 20 } },
      { "type": "textBlock", "structureId": "p1",
        "lines": ["First paragraph of content."],
        "x": 72, "y": 108, "options": { "fontRef": "body", "fontSize": 11 } },
      { "type": "rectangle", "artifact": true, "artifactType": "layout",
        "x": 72, "y": 770, "width": 468, "height": 1,
        "drawOptions": { "strokeColor": { "gray": 0.7 } } }
    ]
  }]
}

{
  "accessible": true,
  "document": {
    "language": "en-US",
    "info": { "title": "My Report" }
  },
  "fonts": [{ "id": "body", "mode": "bundled", "bundledFont": "NotoSans" }],
  "pages": [{
    "size": "Letter",
    "content": [
      { "type": "text", "text": "Report Title",
        "x": 72, "y": 72, "options": { "fontRef": "body", "fontSize": 20 } },
      { "type": "textBlock",
        "lines": ["First paragraph of content."],
        "x": 72, "y": 108, "options": { "fontRef": "body", "fontSize": 11 } },
      { "type": "rectangle", "artifact": true, "artifactType": "layout",
        "x": 72, "y": 770, "width": 468, "height": 1,
        "drawOptions": { "strokeColor": { "gray": 0.7 } } }
    ]
  }]
}

"document": {
  "encryption": {
    "userPassword": "open123",
    "ownerPassword": "admin456",
    "algorithm": "Aes256",
    "allowPrinting": true,
    "allowCopying": false,
    "allowModifying": false,
    "allowAnnotating": false
  }
}

{
  "layers":   [{ "id": "bg", "name": "Background", "visible": true }],
  "shadings": [{
    "id": "grad", "type": "axial",
    "x0": 0, "y0": 0, "x1": 0, "y1": 792,
    "colorStops": [
      { "offset": 0.0, "color": { "r": 0.2, "g": 0.5, "b": 0.9 } },
      { "offset": 1.0, "color": { "r": 0.9, "g": 0.9, "b": 1.0 } }
    ]
  }],
  "patterns": [{
    "id": "dots", "width": 8, "height": 8,
    "content": [{ "type": "circle", "cx": 4, "cy": 4, "r": 1.5,
      "mode": "fill", "drawOptions": { "fillColor": { "gray": 0.8 } } }]
  }],
  "pages": [{
    "size": "Letter",
    "content": [
      { "type": "layer", "layerRef": "bg",
        "content": [
          { "type": "shading", "shadingId": "grad",
            "artifact": true, "x": 0, "y": 0, "width": 612, "height": 792 }
        ]
      },
      { "type": "tilingPattern", "patternId": "dots",
        "artifact": true, "x": 0, "y": 0, "width": 612, "height": 792 }
    ]
  }]
}

{
  "document": {
    "signature": {
      "certificatePath": "C:/certs/my-cert.pfx",
      "certificatePassword": "secret",
      "reason": "Document approved",
      "signerName": "Jane Smith",
      "fieldName": "Sig1",
      "pageIndex": 0, "x": 72, "y": 700, "width": 200, "height": 50
    }
  },
  "pages": [{
    "size": "Letter",
    "content": [
      { "type": "signatureField", "name": "Sig1",
        "x": 72, "y": 700, "width": 200, "height": 50,
        "tooltip": "Approval signature" }
    ]
  }]
}