{
  "#10Compression": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "10. Compression",
      "url": "https://w3c.github.io/PNG-spec/#10Compression"
    }
  },
  "#10CompressionCM0": {
    "current": {
      "number": "10.1",
      "spec": "PNG",
      "text": "Compression method 0",
      "url": "https://w3c.github.io/PNG-spec/#10CompressionCM0"
    }
  },
  "#10CompressionFSL": {
    "current": {
      "number": "10.2",
      "spec": "PNG",
      "text": "Compression of the sequence of filtered scanlines",
      "url": "https://w3c.github.io/PNG-spec/#10CompressionFSL"
    }
  },
  "#10CompressionOtherUses": {
    "current": {
      "number": "10.3",
      "spec": "PNG",
      "text": "Other uses of compression",
      "url": "https://w3c.github.io/PNG-spec/#10CompressionOtherUses"
    }
  },
  "#11AcGen": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#11AcGen"
    }
  },
  "#11Ancillary-chunks": {
    "current": {
      "number": "11.3",
      "spec": "PNG",
      "text": "Ancillary chunks",
      "url": "https://w3c.github.io/PNG-spec/#11Ancillary-chunks"
    }
  },
  "#11CcGen": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#11CcGen"
    }
  },
  "#11Chunks": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "11. Chunk specifications",
      "url": "https://w3c.github.io/PNG-spec/#11Chunks"
    }
  },
  "#11Critical-chunks": {
    "current": {
      "number": "11.2",
      "spec": "PNG",
      "text": "Critical chunks",
      "url": "https://w3c.github.io/PNG-spec/#11Critical-chunks"
    }
  },
  "#11IDAT": {
    "current": {
      "number": "11.2.3",
      "spec": "PNG",
      "text": "IDAT Image data",
      "url": "https://w3c.github.io/PNG-spec/#11IDAT"
    }
  },
  "#11IEND": {
    "current": {
      "number": "11.2.4",
      "spec": "PNG",
      "text": "IEND Image trailer",
      "url": "https://w3c.github.io/PNG-spec/#11IEND"
    }
  },
  "#11IHDR": {
    "current": {
      "number": "11.2.1",
      "spec": "PNG",
      "text": "IHDR Image header",
      "url": "https://w3c.github.io/PNG-spec/#11IHDR"
    }
  },
  "#11Introduction": {
    "current": {
      "number": "11.1",
      "spec": "PNG",
      "text": "General",
      "url": "https://w3c.github.io/PNG-spec/#11Introduction"
    }
  },
  "#11PLTE": {
    "current": {
      "number": "11.2.2",
      "spec": "PNG",
      "text": "PLTE Palette",
      "url": "https://w3c.github.io/PNG-spec/#11PLTE"
    }
  },
  "#11addnlcolinfo": {
    "current": {
      "number": "11.3.2",
      "spec": "PNG",
      "text": "Colour space information",
      "url": "https://w3c.github.io/PNG-spec/#11addnlcolinfo"
    }
  },
  "#11addnlsiinfo": {
    "current": {
      "number": "11.3.4",
      "spec": "PNG",
      "text": "Miscellaneous information",
      "url": "https://w3c.github.io/PNG-spec/#11addnlsiinfo"
    }
  },
  "#11bKGD": {
    "current": {
      "number": "11.3.4.1",
      "spec": "PNG",
      "text": "bKGD Background colour",
      "url": "https://w3c.github.io/PNG-spec/#11bKGD"
    }
  },
  "#11cHRM": {
    "current": {
      "number": "11.3.2.1",
      "spec": "PNG",
      "text": "cHRM Primary chromaticities and white point",
      "url": "https://w3c.github.io/PNG-spec/#11cHRM"
    }
  },
  "#11gAMA": {
    "current": {
      "number": "11.3.2.2",
      "spec": "PNG",
      "text": "gAMA Image gamma",
      "url": "https://w3c.github.io/PNG-spec/#11gAMA"
    }
  },
  "#11hIST": {
    "current": {
      "number": "11.3.4.2",
      "spec": "PNG",
      "text": "hIST Image histogram",
      "url": "https://w3c.github.io/PNG-spec/#11hIST"
    }
  },
  "#11iCCP": {
    "current": {
      "number": "11.3.2.3",
      "spec": "PNG",
      "text": "iCCP Embedded ICC profile",
      "url": "https://w3c.github.io/PNG-spec/#11iCCP"
    }
  },
  "#11iTXt": {
    "current": {
      "number": "11.3.3.4",
      "spec": "PNG",
      "text": "iTXt International textual data",
      "url": "https://w3c.github.io/PNG-spec/#11iTXt"
    }
  },
  "#11keywords": {
    "current": {
      "number": "11.3.3.1",
      "spec": "PNG",
      "text": "Keywords and text strings",
      "url": "https://w3c.github.io/PNG-spec/#11keywords"
    }
  },
  "#11pHYs": {
    "current": {
      "number": "11.3.4.3",
      "spec": "PNG",
      "text": "pHYs Physical pixel dimensions",
      "url": "https://w3c.github.io/PNG-spec/#11pHYs"
    }
  },
  "#11sBIT": {
    "current": {
      "number": "11.3.2.4",
      "spec": "PNG",
      "text": "sBIT Significant bits",
      "url": "https://w3c.github.io/PNG-spec/#11sBIT"
    }
  },
  "#11sPLT": {
    "current": {
      "number": "11.3.4.4",
      "spec": "PNG",
      "text": "sPLT Suggested palette",
      "url": "https://w3c.github.io/PNG-spec/#11sPLT"
    }
  },
  "#11sRGB": {
    "current": {
      "number": "11.3.2.5",
      "spec": "PNG",
      "text": "sRGB Standard RGB colour space",
      "url": "https://w3c.github.io/PNG-spec/#11sRGB"
    }
  },
  "#11tEXt": {
    "current": {
      "number": "11.3.3.2",
      "spec": "PNG",
      "text": "tEXt Textual data",
      "url": "https://w3c.github.io/PNG-spec/#11tEXt"
    }
  },
  "#11tIME": {
    "current": {
      "number": "11.3.5.1",
      "spec": "PNG",
      "text": "tIME Image last-modification time",
      "url": "https://w3c.github.io/PNG-spec/#11tIME"
    }
  },
  "#11tRNS": {
    "current": {
      "number": "11.3.1.1",
      "spec": "PNG",
      "text": "tRNS Transparency",
      "url": "https://w3c.github.io/PNG-spec/#11tRNS"
    }
  },
  "#11textIntro": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#11textIntro"
    }
  },
  "#11textinfo": {
    "current": {
      "number": "11.3.3",
      "spec": "PNG",
      "text": "Textual information",
      "url": "https://w3c.github.io/PNG-spec/#11textinfo"
    }
  },
  "#11timestampinfo": {
    "current": {
      "number": "11.3.5",
      "spec": "PNG",
      "text": "Time stamp information",
      "url": "https://w3c.github.io/PNG-spec/#11timestampinfo"
    }
  },
  "#11transinfo": {
    "current": {
      "number": "11.3.1",
      "spec": "PNG",
      "text": "Transparency information",
      "url": "https://w3c.github.io/PNG-spec/#11transinfo"
    }
  },
  "#11zTXt": {
    "current": {
      "number": "11.3.3.3",
      "spec": "PNG",
      "text": "zTXt Compressed textual data",
      "url": "https://w3c.github.io/PNG-spec/#11zTXt"
    }
  },
  "#12Alpha-channel-creation": {
    "current": {
      "number": "12.3",
      "spec": "PNG",
      "text": "Alpha channel creation",
      "url": "https://w3c.github.io/PNG-spec/#12Alpha-channel-creation"
    }
  },
  "#12Ancillary": {
    "current": {
      "number": "12.10.3",
      "spec": "PNG",
      "text": "Ancillary chunks",
      "url": "https://w3c.github.io/PNG-spec/#12Ancillary"
    }
  },
  "#12Chunk-processing": {
    "current": {
      "number": "12.10",
      "spec": "PNG",
      "text": "Chunking",
      "url": "https://w3c.github.io/PNG-spec/#12Chunk-processing"
    }
  },
  "#12Compression": {
    "current": {
      "number": "12.8",
      "spec": "PNG",
      "text": "Compression",
      "url": "https://w3c.github.io/PNG-spec/#12Compression"
    }
  },
  "#12Encoder-colour-handling": {
    "current": {
      "number": "12.2",
      "spec": "PNG",
      "text": "Encoder colour handling",
      "url": "https://w3c.github.io/PNG-spec/#12Encoder-colour-handling"
    }
  },
  "#12Encoder-gamma-handling": {
    "current": {
      "number": "12.1",
      "spec": "PNG",
      "text": "Encoder gamma handling",
      "url": "https://w3c.github.io/PNG-spec/#12Encoder-gamma-handling"
    }
  },
  "#12Encoders": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "12. PNG Encoders",
      "url": "https://w3c.github.io/PNG-spec/#12Encoders"
    }
  },
  "#12Filter-selection": {
    "current": {
      "number": "12.7",
      "spec": "PNG",
      "text": "Filter selection",
      "url": "https://w3c.github.io/PNG-spec/#12Filter-selection"
    }
  },
  "#12Interlacing": {
    "current": {
      "number": "12.6",
      "spec": "PNG",
      "text": "Interlacing",
      "url": "https://w3c.github.io/PNG-spec/#12Interlacing"
    }
  },
  "#12Introduction": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#12Introduction"
    }
  },
  "#12Private-type-and-method-codes": {
    "current": {
      "number": "12.10.2",
      "spec": "PNG",
      "text": "Use of non-reserved field values",
      "url": "https://w3c.github.io/PNG-spec/#12Private-type-and-method-codes"
    }
  },
  "#12Sample-depth-scaling": {
    "current": {
      "number": "12.4",
      "spec": "PNG",
      "text": "Sample depth scaling",
      "url": "https://w3c.github.io/PNG-spec/#12Sample-depth-scaling"
    }
  },
  "#12Suggested-palettes": {
    "current": {
      "number": "12.5",
      "spec": "PNG",
      "text": "Suggested palettes",
      "url": "https://w3c.github.io/PNG-spec/#12Suggested-palettes"
    }
  },
  "#12Text-chunk-processing": {
    "current": {
      "number": "12.9",
      "spec": "PNG",
      "text": "Text chunk processing",
      "url": "https://w3c.github.io/PNG-spec/#12Text-chunk-processing"
    }
  },
  "#12Use-of-private-chunks": {
    "current": {
      "number": "12.10.1",
      "spec": "PNG",
      "text": "Use of private chunks",
      "url": "https://w3c.github.io/PNG-spec/#12Use-of-private-chunks"
    }
  },
  "#13Alpha-channel-processing": {
    "current": {
      "number": "13.16",
      "spec": "PNG",
      "text": "Alpha channel processing",
      "url": "https://w3c.github.io/PNG-spec/#13Alpha-channel-processing"
    }
  },
  "#13Background-colour": {
    "current": {
      "number": "13.15",
      "spec": "PNG",
      "text": "Background colour",
      "url": "https://w3c.github.io/PNG-spec/#13Background-colour"
    }
  },
  "#13Chunking": {
    "current": {
      "number": "13.5",
      "spec": "PNG",
      "text": "Chunking",
      "url": "https://w3c.github.io/PNG-spec/#13Chunking"
    }
  },
  "#13Decoder-colour-handling": {
    "current": {
      "number": "13.14",
      "spec": "PNG",
      "text": "Decoder colour handling",
      "url": "https://w3c.github.io/PNG-spec/#13Decoder-colour-handling"
    }
  },
  "#13Decoder-gamma-handling": {
    "current": {
      "number": "13.13",
      "spec": "PNG",
      "text": "Decoder gamma handling",
      "url": "https://w3c.github.io/PNG-spec/#13Decoder-gamma-handling"
    }
  },
  "#13Decoders": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "13. PNG decoders and viewers",
      "url": "https://w3c.github.io/PNG-spec/#13Decoders"
    }
  },
  "#13Decompression": {
    "current": {
      "number": "13.8",
      "spec": "PNG",
      "text": "Decompression",
      "url": "https://w3c.github.io/PNG-spec/#13Decompression"
    }
  },
  "#13Error-checking": {
    "current": {
      "number": "13.2",
      "spec": "PNG",
      "text": "Error checking",
      "url": "https://w3c.github.io/PNG-spec/#13Error-checking"
    }
  },
  "#13Filtering": {
    "current": {
      "number": "13.9",
      "spec": "PNG",
      "text": "Filtering",
      "url": "https://w3c.github.io/PNG-spec/#13Filtering"
    }
  },
  "#13Histogram-and-suggested-palette-usage": {
    "current": {
      "number": "13.17",
      "spec": "PNG",
      "text": "Histogram and suggested palette usage",
      "url": "https://w3c.github.io/PNG-spec/#13Histogram-and-suggested-palette-usage"
    }
  },
  "#13Introduction": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#13Introduction"
    }
  },
  "#13Pixel-dimensions": {
    "current": {
      "number": "13.6",
      "spec": "PNG",
      "text": "Pixel dimensions",
      "url": "https://w3c.github.io/PNG-spec/#13Pixel-dimensions"
    }
  },
  "#13Progressive-display": {
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      "number": "13.10",
      "spec": "PNG",
      "text": "Interlacing and progressive display",
      "url": "https://w3c.github.io/PNG-spec/#13Progressive-display"
    }
  },
  "#13Sample-depth-rescaling": {
    "current": {
      "number": "13.12",
      "spec": "PNG",
      "text": "Sample depth rescaling",
      "url": "https://w3c.github.io/PNG-spec/#13Sample-depth-rescaling"
    }
  },
  "#13Security-considerations": {
    "current": {
      "number": "13.3",
      "spec": "PNG",
      "text": "Security considerations",
      "url": "https://w3c.github.io/PNG-spec/#13Security-considerations"
    }
  },
  "#13Text-chunk-processing": {
    "current": {
      "number": "13.7",
      "spec": "PNG",
      "text": "Text chunk processing",
      "url": "https://w3c.github.io/PNG-spec/#13Text-chunk-processing"
    }
  },
  "#13Truecolour-image-handling": {
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      "number": "13.11",
      "spec": "PNG",
      "text": "Truecolour image handling",
      "url": "https://w3c.github.io/PNG-spec/#13Truecolour-image-handling"
    }
  },
  "#14Additional-chunk-types": {
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      "number": "14.1",
      "spec": "PNG",
      "text": "Additional chunk types",
      "url": "https://w3c.github.io/PNG-spec/#14Additional-chunk-types"
    }
  },
  "#14EditorsExt": {
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      "number": "",
      "spec": "PNG",
      "text": "14. Editors",
      "url": "https://w3c.github.io/PNG-spec/#14EditorsExt"
    }
  },
  "#14Ordering": {
    "current": {
      "number": "14.2",
      "spec": "PNG",
      "text": "Behaviour of PNG editors",
      "url": "https://w3c.github.io/PNG-spec/#14Ordering"
    }
  },
  "#14Ordering-of-ancillary-chunks": {
    "current": {
      "number": "14.3.2",
      "spec": "PNG",
      "text": "Ordering of ancillary chunks",
      "url": "https://w3c.github.io/PNG-spec/#14Ordering-of-ancillary-chunks"
    }
  },
  "#14Ordering-of-chunks": {
    "current": {
      "number": "14.3",
      "spec": "PNG",
      "text": "Ordering of chunks",
      "url": "https://w3c.github.io/PNG-spec/#14Ordering-of-chunks"
    }
  },
  "#14Ordering-of-critical-chunks": {
    "current": {
      "number": "14.3.1",
      "spec": "PNG",
      "text": "Ordering of critical chunks",
      "url": "https://w3c.github.io/PNG-spec/#14Ordering-of-critical-chunks"
    }
  },
  "#15ConfIntro": {
    "current": {
      "number": "15.2",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#15ConfIntro"
    }
  },
  "#15ConfObjectives": {
    "current": {
      "number": "15.2.1",
      "spec": "PNG",
      "text": "Objectives",
      "url": "https://w3c.github.io/PNG-spec/#15ConfObjectives"
    }
  },
  "#15ConfScope": {
    "current": {
      "number": "15.2.2",
      "spec": "PNG",
      "text": "Scope",
      "url": "https://w3c.github.io/PNG-spec/#15ConfScope"
    }
  },
  "#15ConformanceConf": {
    "current": {
      "number": "15.3",
      "spec": "PNG",
      "text": "Conformance conditions",
      "url": "https://w3c.github.io/PNG-spec/#15ConformanceConf"
    }
  },
  "#15ConformanceDecoder": {
    "current": {
      "number": "15.3.3",
      "spec": "PNG",
      "text": "Conformance of PNG decoders",
      "url": "https://w3c.github.io/PNG-spec/#15ConformanceDecoder"
    }
  },
  "#15ConformanceEditor": {
    "current": {
      "number": "15.3.4",
      "spec": "PNG",
      "text": "Conformance of PNG editors",
      "url": "https://w3c.github.io/PNG-spec/#15ConformanceEditor"
    }
  },
  "#15ConformanceEncoder": {
    "current": {
      "number": "15.3.2",
      "spec": "PNG",
      "text": "Conformance of PNG encoders",
      "url": "https://w3c.github.io/PNG-spec/#15ConformanceEncoder"
    }
  },
  "#15FileConformance": {
    "current": {
      "number": "15.3.1",
      "spec": "PNG",
      "text": "Conformance of PNG datastreams",
      "url": "https://w3c.github.io/PNG-spec/#15FileConformance"
    }
  },
  "#4Concepts.APNGSequence": {
    "current": {
      "number": "4.9.2",
      "spec": "PNG",
      "text": "Sequence numbers",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.APNGSequence"
    }
  },
  "#4Concepts.AncillInfo": {
    "current": {
      "number": "4.7",
      "spec": "PNG",
      "text": "Additional information",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.AncillInfo"
    }
  },
  "#4Concepts.ColourSpaces": {
    "current": {
      "number": "4.3",
      "spec": "PNG",
      "text": "Colour spaces",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.ColourSpaces"
    }
  },
  "#4Concepts.Encoding": {
    "current": {
      "number": "4.6",
      "spec": "PNG",
      "text": "Encoding the PNG image",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Encoding"
    }
  },
  "#4Concepts.EncodingChunking": {
    "current": {
      "number": "4.6.5",
      "spec": "PNG",
      "text": "Chunking",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingChunking"
    }
  },
  "#4Concepts.EncodingCompression": {
    "current": {
      "number": "4.6.4",
      "spec": "PNG",
      "text": "Compression",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingCompression"
    }
  },
  "#4Concepts.EncodingFiltering": {
    "current": {
      "number": "4.6.3",
      "spec": "PNG",
      "text": "Filtering",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingFiltering"
    }
  },
  "#4Concepts.EncodingIntro": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingIntro"
    }
  },
  "#4Concepts.EncodingPassAbs": {
    "current": {
      "number": "4.6.1",
      "spec": "PNG",
      "text": "Pass extraction",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingPassAbs"
    }
  },
  "#4Concepts.EncodingScanlineAbs": {
    "current": {
      "number": "4.6.2",
      "spec": "PNG",
      "text": "Scanline serialization",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.EncodingScanlineAbs"
    }
  },
  "#4Concepts.Errors": {
    "current": {
      "number": "4.10",
      "spec": "PNG",
      "text": "Error handling",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Errors"
    }
  },
  "#4Concepts.Format": {
    "current": {
      "number": "4.8",
      "spec": "PNG",
      "text": "PNG datastream",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Format"
    }
  },
  "#4Concepts.FormatChunks": {
    "current": {
      "number": "4.8.1",
      "spec": "PNG",
      "text": "Chunks",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.FormatChunks"
    }
  },
  "#4Concepts.FormatTypes": {
    "current": {
      "number": "4.8.2",
      "spec": "PNG",
      "text": "Chunk types",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.FormatTypes"
    }
  },
  "#4Concepts.Implied-alpha": {
    "current": {
      "number": "4.4.1",
      "spec": "PNG",
      "text": "Alpha separation",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Implied-alpha"
    }
  },
  "#4Concepts.Indexing": {
    "current": {
      "number": "4.4.2",
      "spec": "PNG",
      "text": "Indexing",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Indexing"
    }
  },
  "#4Concepts.Introduction": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Introduction"
    }
  },
  "#4Concepts.PNGImage": {
    "current": {
      "number": "4.5",
      "spec": "PNG",
      "text": "PNG image",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.PNGImage"
    }
  },
  "#4Concepts.PNGImageTransformation": {
    "current": {
      "number": "4.4",
      "spec": "PNG",
      "text": "Reference image to PNG image transformation",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.PNGImageTransformation"
    }
  },
  "#4Concepts.RGBMerging": {
    "current": {
      "number": "4.4.3",
      "spec": "PNG",
      "text": "RGB merging",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.RGBMerging"
    }
  },
  "#4Concepts.Registration": {
    "current": {
      "number": "4.11",
      "spec": "PNG",
      "text": "Extensions",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Registration"
    }
  },
  "#4Concepts.Scaling": {
    "current": {
      "number": "4.4.5",
      "spec": "PNG",
      "text": "Sample depth scaling",
      "url": "https://w3c.github.io/PNG-spec/#4Concepts.Scaling"
    }
  },
  "#5CRC-algorithm": {
    "current": {
      "number": "5.5",
      "spec": "PNG",
      "text": "CRC algorithm",
      "url": "https://w3c.github.io/PNG-spec/#5CRC-algorithm"
    }
  },
  "#5Chunk-layout": {
    "current": {
      "number": "5.3",
      "spec": "PNG",
      "text": "Chunk layout",
      "url": "https://w3c.github.io/PNG-spec/#5Chunk-layout"
    }
  },
  "#5Chunk-naming-conventions": {
    "current": {
      "number": "5.4",
      "spec": "PNG",
      "text": "Chunk naming conventions",
      "url": "https://w3c.github.io/PNG-spec/#5Chunk-naming-conventions"
    }
  },
  "#5ChunkOrdering": {
    "current": {
      "number": "5.6",
      "spec": "PNG",
      "text": "Chunk ordering",
      "url": "https://w3c.github.io/PNG-spec/#5ChunkOrdering"
    }
  },
  "#5DataRep": {
    "current": {
      "number": "5",
      "spec": "PNG",
      "text": "Datastream structure",
      "url": "https://w3c.github.io/PNG-spec/#5DataRep"
    }
  },
  "#5Introduction": {
    "current": {
      "number": "5.1",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#5Introduction"
    }
  },
  "#5PNG-file-signature": {
    "current": {
      "number": "5.2",
      "spec": "PNG",
      "text": "PNG signature",
      "url": "https://w3c.github.io/PNG-spec/#5PNG-file-signature"
    }
  },
  "#6AlphaRepresentation": {
    "current": {
      "number": "6.2",
      "spec": "PNG",
      "text": "Alpha representation",
      "url": "https://w3c.github.io/PNG-spec/#6AlphaRepresentation"
    }
  },
  "#6Colour-values": {
    "current": {
      "number": "6.1",
      "spec": "PNG",
      "text": "Colour types and values",
      "url": "https://w3c.github.io/PNG-spec/#6Colour-values"
    }
  },
  "#6Transformation": {
    "current": {
      "number": "6",
      "spec": "PNG",
      "text": "Reference image to PNG image transformation",
      "url": "https://w3c.github.io/PNG-spec/#6Transformation"
    }
  },
  "#7Filtering": {
    "current": {
      "number": "7.3",
      "spec": "PNG",
      "text": "Filtering",
      "url": "https://w3c.github.io/PNG-spec/#7Filtering"
    }
  },
  "#7Integers-and-byte-order": {
    "current": {
      "number": "7.1",
      "spec": "PNG",
      "text": "Integers and byte order",
      "url": "https://w3c.github.io/PNG-spec/#7Integers-and-byte-order"
    }
  },
  "#7Scanline": {
    "current": {
      "number": "7.2",
      "spec": "PNG",
      "text": "Scanlines",
      "url": "https://w3c.github.io/PNG-spec/#7Scanline"
    }
  },
  "#7Transformation": {
    "current": {
      "number": "7",
      "spec": "PNG",
      "text": "Encoding the PNG image as a PNG datastream",
      "url": "https://w3c.github.io/PNG-spec/#7Transformation"
    }
  },
  "#8Interlace": {
    "current": {
      "number": "8",
      "spec": "PNG",
      "text": "Interlacing and pass extraction",
      "url": "https://w3c.github.io/PNG-spec/#8Interlace"
    }
  },
  "#8InterlaceIntro": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#8InterlaceIntro"
    }
  },
  "#8InterlaceMethods": {
    "current": {
      "number": "8.1",
      "spec": "PNG",
      "text": "Interlace methods",
      "url": "https://w3c.github.io/PNG-spec/#8InterlaceMethods"
    }
  },
  "#9Filter-type-3-Average": {
    "current": {
      "number": "9.3",
      "spec": "PNG",
      "text": "Filter type 3: Average",
      "url": "https://w3c.github.io/PNG-spec/#9Filter-type-3-Average"
    }
  },
  "#9Filter-type-4-Paeth": {
    "current": {
      "number": "9.4",
      "spec": "PNG",
      "text": "Filter type 4: Paeth",
      "url": "https://w3c.github.io/PNG-spec/#9Filter-type-4-Paeth"
    }
  },
  "#9Filter-types": {
    "current": {
      "number": "9.2",
      "spec": "PNG",
      "text": "Filter types for filter method 0",
      "url": "https://w3c.github.io/PNG-spec/#9Filter-types"
    }
  },
  "#9Filters": {
    "current": {
      "number": "9",
      "spec": "PNG",
      "text": "Filtering",
      "url": "https://w3c.github.io/PNG-spec/#9Filters"
    }
  },
  "#9FtIntro": {
    "current": {
      "number": "9.1",
      "spec": "PNG",
      "text": "Filter methods and filter types",
      "url": "https://w3c.github.io/PNG-spec/#9FtIntro"
    }
  },
  "#A-Conventions": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Internet Media Types",
      "url": "https://w3c.github.io/PNG-spec/#A-Conventions"
    }
  },
  "#B-NewChunksAppendix": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Guidelines for private chunk types",
      "url": "https://w3c.github.io/PNG-spec/#B-NewChunksAppendix"
    }
  },
  "#C-GammaAppendix": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Gamma and chromaticity",
      "url": "https://w3c.github.io/PNG-spec/#C-GammaAppendix"
    }
  },
  "#D-CRCAppendix": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Sample CRC implementation",
      "url": "https://w3c.github.io/PNG-spec/#D-CRCAppendix"
    }
  },
  "#E-Archive-sites": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Archive sites",
      "url": "https://w3c.github.io/PNG-spec/#E-Archive-sites"
    }
  },
  "#E-Intro": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#E-Intro"
    }
  },
  "#E-PNG-home-page": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "PNG web site",
      "url": "https://w3c.github.io/PNG-spec/#E-PNG-home-page"
    }
  },
  "#E-Resources": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Online resources",
      "url": "https://w3c.github.io/PNG-spec/#E-Resources"
    }
  },
  "#E-Sample-implementation": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Sample implementation and test images",
      "url": "https://w3c.github.io/PNG-spec/#E-Sample-implementation"
    }
  },
  "#E-icc-profile-specs": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "ICC profile specifications",
      "url": "https://w3c.github.io/PNG-spec/#E-icc-profile-specs"
    }
  },
  "#F-ChageList": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Changes",
      "url": "https://w3c.github.io/PNG-spec/#F-ChageList"
    }
  },
  "#Privacy-considerations": {
    "current": {
      "number": "13.4",
      "spec": "PNG",
      "text": "Privacy considerations",
      "url": "https://w3c.github.io/PNG-spec/#Privacy-considerations"
    }
  },
  "#abbreviated-terms": {
    "current": {
      "number": "3.2",
      "spec": "PNG",
      "text": "Abbreviated terms",
      "url": "https://w3c.github.io/PNG-spec/#abbreviated-terms"
    }
  },
  "#acTL-chunk": {
    "current": {
      "number": "11.3.6.1",
      "spec": "PNG",
      "text": "acTL Animation Control Chunk",
      "url": "https://w3c.github.io/PNG-spec/#acTL-chunk"
    }
  },
  "#alpha-compaction": {
    "current": {
      "number": "4.4.4",
      "spec": "PNG",
      "text": "Alpha compaction",
      "url": "https://w3c.github.io/PNG-spec/#alpha-compaction"
    }
  },
  "#animation-information": {
    "current": {
      "number": "11.3.6",
      "spec": "PNG",
      "text": "Animation information",
      "url": "https://w3c.github.io/PNG-spec/#animation-information"
    }
  },
  "#apng-frame-based-animation": {
    "current": {
      "number": "4.9",
      "spec": "PNG",
      "text": "APNG: frame-based animation",
      "url": "https://w3c.github.io/PNG-spec/#apng-frame-based-animation"
    }
  },
  "#cICP-chunk": {
    "current": {
      "number": "11.3.2.6",
      "spec": "PNG",
      "text": "cICP Coding-independent code points for video signal type identification",
      "url": "https://w3c.github.io/PNG-spec/#cICP-chunk"
    }
  },
  "#changes-between-first-and-second-editions": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Changes between First and Second Editions",
      "url": "https://w3c.github.io/PNG-spec/#changes-between-first-and-second-editions"
    }
  },
  "#changes-since-the-w3c-recommendation-of-10-november-2003-png-second-edition": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Changes since the W3C Recommendation of 10 November 2003 (PNG Second Edition)",
      "url": "https://w3c.github.io/PNG-spec/#changes-since-the-w3c-recommendation-of-10-november-2003-png-second-edition"
    }
  },
  "#concepts": {
    "current": {
      "number": "4",
      "spec": "PNG",
      "text": "Concepts",
      "url": "https://w3c.github.io/PNG-spec/#concepts"
    }
  },
  "#conformance": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "15. Conformance",
      "url": "https://w3c.github.io/PNG-spec/#conformance"
    }
  },
  "#conformance-0": {
    "current": {
      "number": "15.1",
      "spec": "PNG",
      "text": "Conformance",
      "url": "https://w3c.github.io/PNG-spec/#conformance-0"
    }
  },
  "#definitions": {
    "current": {
      "number": "3.1",
      "spec": "PNG",
      "text": "Definitions",
      "url": "https://w3c.github.io/PNG-spec/#definitions"
    }
  },
  "#eXIf": {
    "current": {
      "number": "11.3.4.5",
      "spec": "PNG",
      "text": "eXIf Exchangeable Image File (Exif) Profile",
      "url": "https://w3c.github.io/PNG-spec/#eXIf"
    }
  },
  "#error-handling": {
    "current": {
      "number": "13.1",
      "spec": "PNG",
      "text": "Error handling",
      "url": "https://w3c.github.io/PNG-spec/#error-handling"
    }
  },
  "#exif-general-recommendations": {
    "current": {
      "number": "11.3.4.5.1",
      "spec": "PNG",
      "text": "eXIf General Recommendations",
      "url": "https://w3c.github.io/PNG-spec/#exif-general-recommendations"
    }
  },
  "#exif-recommendations-for-decoders": {
    "current": {
      "number": "11.3.4.5.2",
      "spec": "PNG",
      "text": "eXIf Recommendations for Decoders",
      "url": "https://w3c.github.io/PNG-spec/#exif-recommendations-for-decoders"
    }
  },
  "#exif-recommendations-for-encoders": {
    "current": {
      "number": "11.3.4.5.3",
      "spec": "PNG",
      "text": "eXIf Recommendations for Encoders",
      "url": "https://w3c.github.io/PNG-spec/#exif-recommendations-for-encoders"
    }
  },
  "#fcTL-chunk": {
    "current": {
      "number": "11.3.6.2",
      "spec": "PNG",
      "text": "fcTL Frame Control Chunk",
      "url": "https://w3c.github.io/PNG-spec/#fcTL-chunk"
    }
  },
  "#fdAT-chunk": {
    "current": {
      "number": "11.3.6.3",
      "spec": "PNG",
      "text": "fdAT Frame Data Chunk",
      "url": "https://w3c.github.io/PNG-spec/#fdAT-chunk"
    }
  },
  "#image-apng": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "image/apng",
      "url": "https://w3c.github.io/PNG-spec/#image-apng"
    }
  },
  "#image-png": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "image/png",
      "url": "https://w3c.github.io/PNG-spec/#image-png"
    }
  },
  "#images": {
    "current": {
      "number": "4.2",
      "spec": "PNG",
      "text": "Images",
      "url": "https://w3c.github.io/PNG-spec/#images"
    }
  },
  "#informative-references": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Informative references",
      "url": "https://w3c.github.io/PNG-spec/#informative-references"
    }
  },
  "#introduction": {
    "current": {
      "number": "1",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#introduction"
    }
  },
  "#introduction-0": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Introduction",
      "url": "https://w3c.github.io/PNG-spec/#introduction-0"
    }
  },
  "#mASt-chunk": {
    "current": {
      "number": "11.3.2.7",
      "spec": "PNG",
      "text": "mASt mastering metadata",
      "url": "https://w3c.github.io/PNG-spec/#mASt-chunk"
    }
  },
  "#normative-references": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Normative references",
      "url": "https://w3c.github.io/PNG-spec/#normative-references"
    }
  },
  "#references": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "References",
      "url": "https://w3c.github.io/PNG-spec/#references"
    }
  },
  "#scope": {
    "current": {
      "number": "2",
      "spec": "PNG",
      "text": "Scope",
      "url": "https://w3c.github.io/PNG-spec/#scope"
    }
  },
  "#sec-defining-new-chunks": {
    "current": {
      "number": "5.7",
      "spec": "PNG",
      "text": "Defining chunks",
      "url": "https://w3c.github.io/PNG-spec/#sec-defining-new-chunks"
    }
  },
  "#sec-defining-private-chunks": {
    "current": {
      "number": "5.7.3",
      "spec": "PNG",
      "text": "Defining private chunks",
      "url": "https://w3c.github.io/PNG-spec/#sec-defining-private-chunks"
    }
  },
  "#sec-defining-public-chunks": {
    "current": {
      "number": "5.7.2",
      "spec": "PNG",
      "text": "Defining public chunks",
      "url": "https://w3c.github.io/PNG-spec/#sec-defining-public-chunks"
    }
  },
  "#sec-defining-public-chunks-general": {
    "current": {
      "number": "5.7.1",
      "spec": "PNG",
      "text": "General",
      "url": "https://w3c.github.io/PNG-spec/#sec-defining-public-chunks-general"
    }
  },
  "#sec-field-value-extensibility": {
    "current": {
      "number": "5.8",
      "spec": "PNG",
      "text": "Private field values",
      "url": "https://w3c.github.io/PNG-spec/#sec-field-value-extensibility"
    }
  },
  "#static-and-animated-images": {
    "current": {
      "number": "4.1",
      "spec": "PNG",
      "text": "Static and Animated images",
      "url": "https://w3c.github.io/PNG-spec/#static-and-animated-images"
    }
  },
  "#structure": {
    "current": {
      "number": "4.9.1",
      "spec": "PNG",
      "text": "Structure",
      "url": "https://w3c.github.io/PNG-spec/#structure"
    }
  },
  "#terms-definitions-and-abbreviated-terms": {
    "current": {
      "number": "3",
      "spec": "PNG",
      "text": "Terms, definitions, and abbreviated terms",
      "url": "https://w3c.github.io/PNG-spec/#terms-definitions-and-abbreviated-terms"
    }
  },
  "#title": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Portable Network Graphics (PNG) Specification (Third Edition)",
      "url": "https://w3c.github.io/PNG-spec/#title"
    }
  },
  "#toc": {
    "current": {
      "number": "",
      "spec": "PNG",
      "text": "Table of Contents",
      "url": "https://w3c.github.io/PNG-spec/#toc"
    }
  }
}