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: 'Google',
Model: 'Pixel 4a (5G)',
Orientation: 1,
XResolution: 72,
YResolution: 72,
ResolutionUnit: 2,
Software: 'HDR+ 1.0.520435816zp',
DateTime: 2023-05-20T16:54:06.000Z,
YCbCrPositioning: 1,
ExifTag: 248,
GPSTag: 988
},
Thumbnail: {
ImageWidth: 256,
ImageLength: 341,
Compression: 6,
Orientation: 1,
XResolution: 72,
YResolution: 72,
ResolutionUnit: 2,
JPEGInterchangeFormat: 1311,
JPEGInterchangeFormatLength: 7512
},
Photo: {
ExposureTime: 0.024458,
FNumber: 2,
ExposureProgram: 2,
ISOSpeedRatings: 77,
ExifVersion: <Buffer 30 32 33 32>,
DateTimeOriginal: 2023-05-20T16:54:06.000Z,
DateTimeDigitized: 2023-05-20T16:54:06.000Z,
OffsetTime: '+02:00',
OffsetTimeOriginal: '+02:00',
OffsetTimeDigitized: '+02:00',
ComponentsConfiguration: <Buffer 01 02 03 00>,
ShutterSpeedValue: 5.35,
ApertureValue: 2,
BrightnessValue: 2.73,
ExposureBiasValue: 0,
MaxApertureValue: 2,
SubjectDistance: 0.35,
MeteringMode: 2,
Flash: 16,
FocalLength: 2.57,
SubSecTime: '827',
SubSecTimeOriginal: '827',
SubSecTimeDigitized: '827',
FlashpixVersion: <Buffer 30 31 30 30>,
ColorSpace: 1,
PixelXDimension: 2448,
PixelYDimension: 3264,
InteroperabilityTag: 958,
SensingMethod: 2,
SceneType: <Buffer 01>,
CustomRendered: 1,
ExposureMode: 0,
WhiteBalance: 0,
DigitalZoomRatio: 1.2,
FocalLengthIn35mmFilm: 24,
SceneCaptureType: 0,
Contrast: 0,
Saturation: 0,
Sharpness: 0,
SubjectDistanceRange: 1,
LensMake: 'Google',
LensModel: 'Pixel 4a (5G) front camera 2.57mm f/2.0',
CompositeImage: 3
},
GPSInfo: {
GPSLatitudeRef: 'N',
GPSLatitude: [ 48, 5, 2.01 ],
GPSLongitudeRef: 'E',
GPSLongitude: [ 11, 37, 54.65 ],
GPSAltitudeRef: 0,
GPSAltitude: 596.1,
GPSTimeStamp: [ 14, 53, 42 ],
GPSDateStamp: '2023:05:20'
},
Iop: {
InteroperabilityIndex: 'R98',
InteroperabilityVersion: <Buffer 30 31 30 30>
}
}
License
MIT