[
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A0",
      "dimensions_mm": {
        "width": 841,
        "height": 1189
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "posters",
        "technical drawings",
        "large signage"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A1",
      "dimensions_mm": {
        "width": 594,
        "height": 841
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "posters",
        "flipcharts",
        "large diagrams"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A2",
      "dimensions_mm": {
        "width": 420,
        "height": 594
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "posters",
        "brochures",
        "medium diagrams"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A3",
      "dimensions_mm": {
        "width": 297,
        "height": 420
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "drawings",
        "presentations",
        "tabloid-size brochures"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A4",
      "dimensions_mm": {
        "width": 210,
        "height": 297
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "documents",
        "letters",
        "magazines"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "A",
      "name": "A5",
      "dimensions_mm": {
        "width": 148,
        "height": 210
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "booklets",
        "flyers",
        "small catalogs"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "B",
      "name": "B4",
      "dimensions_mm": {
        "width": 250,
        "height": 353
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "magazine spreads",
        "enlarged prints"
      ]
    },
    {
      "category": "print",
      "standard": "ISO 216",
      "series": "B",
      "name": "B5",
      "dimensions_mm": {
        "width": 176,
        "height": 250
      },
      "aspect_ratio": "1:1.414",
      "common_uses": [
        "books",
        "manuals"
      ]
    },
    {
      "category": "print",
      "standard": "North American (ANSI)",
      "name": "Letter",
      "series": "ANSI A",
      "iso_216": "A4",
      "dimensions_in": {
        "width": 8.5,
        "height": 11
      },
      "dimensions_mm": {
        "width": 216,
        "height": 279
      },
      "aspect_ratio": "1:1.294",
      "common_uses": [
        "letters",
        "resumes",
        "general office documents"
      ]
    },
    {
      "category": "print",
      "standard": "North American (ANSI)",
      "name": "Legal",
        "series": "ANSI B",
        "iso_216": "A4",
      "dimensions_in": {
        "width": 8.5,
        "height": 14
      },
      "dimensions_mm": {
        "width": 216,
        "height": 356
      },
      "aspect_ratio": "1:1.647",
      "common_uses": [
        "contracts",
        "legal documents"
      ]
    },
    {
      "category": "print",
      "standard": "North American (ANSI)",
      "name": "Tabloid",
        "series": "ANSI C",
        "iso_216": "A3",
      "dimensions_in": {
        "width": 11,
        "height": 17
      },
      "dimensions_mm": {
        "width": 279,
        "height": 432
      },
      "aspect_ratio": "1:1.545",
      "common_uses": [
        "newspapers",
        "ledger",
        "presentations"
      ]
    },
    {
      "category": "digital",
      "standard": "common screen sizes",
      "name": "HD",
      "series": "HD",
      "ansi": "HD",
      "iso_216": "A4",
      "dimensions_px": {
        "width": 1280,
        "height": 720
      },
      "aspect_ratio": "16:9",
      "common_uses": [
        "web video",
        "basic broadcasting"
      ]
    },
    {
      "category": "digital",
      "standard": "common screen sizes",
      "name": "Full HD",
        "series": "FHD",
        "ansi": "FHD",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 1920,
        "height": 1080
      },
      "aspect_ratio": "16:9",
      "common_uses": [
        "high-definition video",
        "streaming"
      ]
    },
    {
      "category": "digital",
      "standard": "common screen sizes",
      "name": "Quad HD (QHD)",
        "series": "QHD",
        "ansi": "QHD",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 2560,
        "height": 1440
      },
      "aspect_ratio": "16:9",
      "common_uses": [
        "gaming",
        "high-resolution displays"
      ]
    },
    {
      "category": "digital",
      "standard": "common screen sizes",
      "name": "4K UHD",
        "series": "4K",
        "ansi": "4K",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 3840,
        "height": 2160
      },
      "aspect_ratio": "16:9",
      "common_uses": [
        "ultra-high-definition video",
        "professional film editing"
      ]
    },
    {
      "category": "digital",
      "standard": "mobile & social",
      "name": "Instagram Post",
        "series": "Instagram",
      "ansi": "Instagram Post",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 1080,
        "height": 1080
      },
      "aspect_ratio": "1:1",
      "common_uses": [
        "social media posts",
        "square graphics"
      ]
    },
    {
      "category": "digital",
      "standard": "mobile & social",
      "name": "Instagram Story",
        "series": "Instagram",
        "ansi": "Instagram Story",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 1080,
        "height": 1920
      },
      "aspect_ratio": "9:16",
      "common_uses": [
        "vertical video",
        "full-screen social media"
      ]
    },
    {
      "category": "digital",
      "standard": "mobile & social",
      "name": "Facebook Cover Photo",
        "series": "Facebook",
        "ansi": "Facebook Cover",
        "iso_216": "A4",
      "dimensions_px": {
        "width": 820,
        "height": 312
      },
      "aspect_ratio": "approx. 2.63:1",
      "common_uses": [
        "social media banners"
      ]
    }
  ]