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  • License MIT

A small EXIF image metadata reader

Package Exports

  • exif-reader
  • exif-reader/index.js

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (exif-reader) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

exif-reader

A small EXIF image metadata reader.

Usage

npm install exif-reader
var exif = require('exif-reader');

// decode raw exif data from a buffer
var metadata = exif(buf);

Support is also built into jpg-stream for extracting EXIF data from JPEGs using this module.

Resulting properties are grouped as follows:

  • bigEndian: determines the endianness of the buffers (in case of non-ascii data)
  • Image: basic TIFF properties about the image
  • Thumbnail: basic TIFF properties about the embedded thumbnail
  • Photo: full exif data
  • GPSInfo: GPS/location data about the image
  • Iop: interoperability information

Not all of these properties will always be defined.

All standard Exif tags are supported.

Here is some example output:

{
  bigEndian: false,
  Image: {
    ImageWidth: 2448,
    ImageLength: 3264,
    Make: 'Some Make',
    Model: 'Some Model',
    Orientation: 1,
    XResolution: 72,
    YResolution: 72,
    ResolutionUnit: 2,
    Software: 'HDR+ 1.0.520435816zd',
    DateTime: 2023-05-20T17:02:00.000Z,
    YCbCrPositioning: 1,
  },
  Thumbnail: {
    ImageWidth: 219,
    ImageLength: 292,
    Compression: 6,
    Orientation: 1,
    XResolution: 72,
    YResolution: 72,
    ResolutionUnit: 2,
  },
  Photo: {
    ExposureTime: 0.016679,
    FNumber: 2,
    ExposureProgram: 2,
    ISOSpeedRatings: 129,
    ExifVersion: Buffer(4) [Uint8Array] [ 48, 50, 51, 50 ],
    DateTimeOriginal: 2023-05-20T17:02:00.000Z,
    DateTimeDigitized: 2023-05-20T17:02:00.000Z,
    OffsetTime: '+02:00',
    OffsetTimeOriginal: '+02:00',
    OffsetTimeDigitized: '+02:00',
    ShutterSpeedValue: 5.91,
    ApertureValue: 2,
    BrightnessValue: 2.54,
    ExposureBiasValue: 0,
    MaxApertureValue: 2,
    SubjectDistance: 0.35,
    MeteringMode: 2,
    Flash: 16,
    FocalLength: 2.57,
    SubSecTime: '811',
    SubSecTimeOriginal: '811',
    SubSecTimeDigitized: '811',
    FlashpixVersion: Buffer(4) [Uint8Array] [ 48, 49, 48, 48 ],
    ColorSpace: 1,
    PixelXDimension: 2448,
    PixelYDimension: 3264,
    InteroperabilityTag: 958,
    SensingMethod: 2,
    CustomRendered: 1,
    ExposureMode: 0,
    WhiteBalance: 0,
    DigitalZoomRatio: 1.4,
    FocalLengthIn35mmFilm: 24,
    SceneCaptureType: 0,
    Contrast: 0,
    Saturation: 0,
    Sharpness: 0,
    SubjectDistanceRange: 1,
    LensMake: 'Some Lens Make',
    LensModel: 'Some front camera 2.57mm f/2.0',
    CompositeImage: 3
  },
  GPSInfo: {
    GPSLatitudeRef: 'N',
    GPSLatitude: [ 49, 1, 3.12 ],
    GPSLongitudeRef: 'E',
    GPSLongitude: [ 11, 1, 4.56 ],
    GPSAltitudeRef: 0,
    GPSAltitude: 296.1,
    GPSTimeStamp: [ 15, 1, 48 ],
    GPSImgDirectionRef: 'M',
    GPSImgDirection: 258,
    GPSDateStamp: '2023:05:20'
  }
}

License

MIT