Scry

A pure Swift EXIF metadata parser. No dependencies, no Apple frameworks. Fully macOS and Linux compatible.

Supports JPEG, PNG, and WebP images.

Scry does not load the entire image into memory, and as such can be used with large image files.

Usage

import Scry

if let metadata = try Scry.metadata(fromFileAt: "/path/to/photo.jpg") {
  print(metadata["Make"])    // "Apple"
  print(metadata["Model"])   // "iPhone 14 Pro"
  print(metadata["FNumber"]) // 1.78
}

Returns nil when the image has no EXIF data.

Installation

Add to your Package.swift:

dependencies: [
  .package(url: "https://github.com/loopwerk/Scry.git", from: "1.0.0"),
]

Metadata properties

Scry.metadata returns a flat [String: Any] dictionary. The keys and value types are:

Image info (from TIFF IFD0)

Key	Type	Example
`ImageWidth`	`Int`	`4032`
`ImageLength`	`Int`	`3024`
`ImageDescription`	`String`	`"Sunset photo"`
`Make`	`String`	`"Apple"`
`Model`	`String`	`"iPhone 14 Pro"`
`Orientation`	`Int`	`1`
`XResolution`	`Double`	`72.0`
`YResolution`	`Double`	`72.0`
`ResolutionUnit`	`Int`	`2`
`Software`	`String`	`"18.7.3"`
`DateTime`	`String`	`"2026:01:05 17:11:42"`
`Artist`	`String`	`"Kevin Renskers"`
`HostComputer`	`String`	`"iPhone 14 Pro"`
`Copyright`	`String`	`"2026 Kevin Renskers"`

Exposure and camera (from EXIF sub-IFD)

Key	Type	Example
`ExposureTime`	`Double`	`0.04` (seconds)
`FNumber`	`Double`	`1.78`
`ExposureProgram`	`Int`	`2`
`ISOSpeedRatings`	`Int`	`800`
`ExifVersion`	`[UInt8]`	`[2, 3, 2]`
`DateTimeOriginal`	`String`	`"2026:01:05 17:11:42"`
`DateTimeDigitized`	`String`	`"2026:01:05 17:11:42"`
`ShutterSpeedValue`	`Double`	`4.64` (APEX)
`ApertureValue`	`Double`	`1.66` (APEX)
`BrightnessValue`	`Double`	`-2.50` (APEX)
`ExposureBiasValue`	`Double`	`0.0` (EV)
`MeteringMode`	`Int`	`5`
`Flash`	`Int`	`16`
`FocalLength`	`Double`	`6.86` (mm)
`OffsetTime`	`String`	`"+01:00"`
`OffsetTimeOriginal`	`String`	`"+01:00"`
`OffsetTimeDigitized`	`String`	`"+01:00"`
`PixelXDimension`	`Int`	`4032`
`PixelYDimension`	`Int`	`3024`
`CustomRendered`	`Int`	`0`
`ExposureMode`	`Int`	`0`
`WhiteBalance`	`Int`	`0`
`FocalLenIn35mmFilm`	`Int`	`24`
`SceneCaptureType`	`Int`	`0`
`BodySerialNumber`	`String`	`"DNXXXXXXXXXXXX"`
`LensSpecification`	`[Double]`	`[2.22, 9.0, 1.78, 2.8]`
`LensMake`	`String`	`"Apple"`
`LensModel`	`String`	`"iPhone 14 Pro back triple camera 6.86mm f/1.78"`
`LensSerialNumber`	`String`	`"XXXXXXXXXX"`

GPS (from GPS sub-IFD)

Key	Type	Example
`GPSVersionID`	`[Int]`	`[2, 3, 0, 0]`
`GPSLatitudeRef`	`String`	`"N"`
`GPSLatitude`	`[Double]`	`[52.0, 31.0, 12.74]` (deg, min, sec)
`GPSLongitudeRef`	`String`	`"E"`
`GPSLongitude`	`[Double]`	`[13.0, 24.0, 36.33]` (deg, min, sec)
`GPSAltitudeRef`	`Int`	`0` (0 = above sea level)
`GPSAltitude`	`Double`	`38.39` (meters)
`GPSTimeStamp`	`[Double]`	`[16.0, 11.0, 42.0]` (hrs, min, sec)
`GPSSpeedRef`	`String`	`"K"` (km/h)
`GPSSpeed`	`Double`	`0.0`
`GPSImgDirectionRef`	`String`	`"T"` (true north)
`GPSImgDirection`	`Double`	`139.56` (degrees)
`GPSDestBearingRef`	`String`	`"T"`
`GPSDestBearing`	`Double`	`139.56` (degrees)
`GPSDateStamp`	`String`	`"2026:01:05"`

Only keys present in the image are included in the dictionary. Not every image will have every property.

Scry

1.1.0

What's New

1.1.0

2026-04-05T01:30:12Z

New Features

Scry

Usage

Installation

Metadata properties

Image info (from TIFF IFD0)

Exposure and camera (from EXIF sub-IFD)

GPS (from GPS sub-IFD)

Description

Dependencies