loopwerk/scry

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(fromFileAt:) 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.

Package Metadata

Repository: loopwerk/scry

Default branch: main

README: README.md