Plugin.Maui.Exif 1.0.0-preview1

Plugin.Maui.Exif

Plugin.Maui.Exif provides the ability to read EXIF metadata from image files in your .NET MAUI application across iOS, Android, and Windows platforms.

Features

• Read EXIF metadata from image files and streams
• Extract common metadata like camera make/model, date taken, GPS coordinates, camera settings
• Cross-platform support (iOS, macOS Catalyst, Android, Windows)
• Easy-to-use API with both static and dependency injection patterns
• Extension methods for common EXIF data operations

Installation

<PackageReference Include="Plugin.Maui.Exif" Version="1.0.0" />

Usage

Basic Usage

// Using the static API
var exifData = await Exif.Default.ReadFromFileAsync(imagePath);

// Using dependency injection
builder.Services.AddSingleton<IExif>(Exif.Default);

// In your class
public MainPage(IExif exif)
{
    var exifData = await exif.ReadFromFileAsync(imagePath);
}

Reading EXIF Data

var exifData = await Exif.Default.ReadFromFileAsync("path/to/image.jpg");

if (exifData != null)
{
    // Basic image info
    Console.WriteLine($"Camera: {exifData.Make} {exifData.Model}");
    Console.WriteLine($"Date taken: {exifData.DateTaken}");
    Console.WriteLine($"Dimensions: {exifData.Width}x{exifData.Height}");
    
    // Camera settings
    Console.WriteLine($"F-number: f/{exifData.FNumber}");
    Console.WriteLine($"Exposure time: {exifData.ExposureTime}s");
    Console.WriteLine($"ISO: {exifData.Iso}");
    Console.WriteLine($"Focal length: {exifData.FocalLength}mm");
    
    // GPS coordinates
    if (exifData.HasGpsCoordinates())
    {
        Console.WriteLine($"Location: {exifData.Latitude}, {exifData.Longitude}");
        Console.WriteLine($"Altitude: {exifData.Altitude}m");
    }
}

Reading from Stream

using var stream = File.OpenRead("path/to/image.jpg");
var exifData = await Exif.Default.ReadFromStreamAsync(stream);

Extension Methods

The plugin includes useful extension methods:

// Check if GPS coordinates are available
if (exifData.HasGpsCoordinates())
{
    // Get formatted GPS string
    var coordinates = exifData.GetFormattedGpsCoordinates();
    // Result: "37.421998°N, 122.084000°W"
}

// Get formatted camera settings
var settings = exifData.GetFormattedCameraSettings();
// Result: "f/2.2, 1/120s, ISO 100, 24mm"

// Get camera information
var camera = exifData.GetCameraInfo();
// Result: "Apple iPhone 12 Pro"

// Check if image needs rotation
if (exifData.NeedsRotation())
{
    var angle = exifData.GetRotationAngle();
    // Rotate the image by the returned angle
}

Available EXIF Properties

Basic Image Information

• Width / Height - Image dimensions
• Orientation - Image orientation
• DateTaken - Date and time the photo was taken

Camera Information

• Make - Camera manufacturer
• Model - Camera model
• Software - Software used to process the image

Camera Settings

• FNumber - Aperture f-number
• ExposureTime - Shutter speed in seconds
• Iso - ISO sensitivity
• FocalLength - Focal length in millimeters
• Flash - Flash mode used

GPS Information

• Latitude - GPS latitude
• Longitude - GPS longitude
• Altitude - GPS altitude in meters

Additional Information

• Copyright - Copyright information
• Artist - Photographer/artist name
• ImageDescription - Image description or comment
• AllTags - Dictionary containing all available EXIF tags

Platform Support

Permissions

Android

Add the following permissions to your AndroidManifest.xml:

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_MEDIA_IMAGES" />

iOS

No special permissions required for reading EXIF data from files accessible to your app.

Windows

No special permissions required.

Sample App

The repository includes a sample app demonstrating how to:

• Select images using FilePicker
• Read and display EXIF metadata
• Show formatted camera settings and GPS information
• Display all available EXIF tags

Future Enhancements

• Writing EXIF metadata (planned for future versions)
• Additional metadata formats support
• Batch processing capabilities

Contributing

Contributions are welcome! Please feel free to submit a Pull Request.

License

This project is licensed under the MIT License.

From there, after creating a GitHub release your plugin will be automatically released on NuGet!