✨ Features

• 📱 Cross-Platform Support: Works seamlessly on Android, iOS, macOS, JVM (Windows, macOS, Linux), JS, and WASM
• 🎯 Native Experience: Uses platform-native file pickers for the best user experience
• 🪶 Lightweight: Minimal dependencies to keep your app fast and lean
• 🔌 Rich Integrations: Works with Compose Multiplatform, Coroutines, kotlinx-io, Coil, and more
• 📂 Comprehensive File Operations: Pick files, save documents, access photos, manage directories
• 🎨 Image Utilities: Built-in image compression and gallery integration

🚀 Who's Using FileKit

FileKit is trusted by developers building amazing cross-platform applications:

• Heron - KMP Bluesky client using FileKit for image preview when uploading images or videos
• Rush - Lyrics search app like Spotify
• Composables SVG to Compose - Web tool to convert SVG to Compose code in seconds
• Twine - A multiplatform RSS reader built using Kotlin and Compose
• Butler - AI Chat App supporting image uploads across iOS, Android, Desktop, and WasmJS
• PixelSafe - Free steganography tool for PNG images
• AndroidToolKit - Desktop tools applicable to Android development, supporting Windows, Mac and Linux
• Splital - Easily track and manage your shared expenses, quickly, simply, and hassle-free on Android and iOS
• Tracker - Manager for Bluesky - Track and manage your Bluesky followers, unfollowers, blockers, and post analytics — all in real time! On Android and iOS.
• Parrot Workout Tracker - The ultimate fitness log and exercise tracker to crush your goals on Android and iOS.
• Ashampoo Photo Organizer - Photo management software for organizing and searching large photo collections
• AB Download Manager - A Download Manager that speeds up your downloads
• Edconv - A user-friendly interface that simplifies the power of FFmpeg. It's designed for fast and efficient conversion of video and audio files.
• Gluky, Refy, Pandoro, Neutron, and Brownie - Self-hosted applications using FileKit for profile pictures and file uploads
• Keyguard - Alternative client for the Bitwarden platform and KeePass (KDBX)
• HowMarket - Cross-platform Point of Sale (PoS) software for small and growing businesses, using FileKit to upload and manage product and user images
• Authmeister - Multiplatform OTP authenticator supporting TOTP and HOTP, available on Android and iOS
• Dancing Decibels - Multi-platform app for music festivals and live entertainment experiences, using FileKit for image imports and schedule import/export
• Kai - OpenClaw alternative in your pocket, using FileKit in production across Android, iOS, desktop, and web
• Hammer Editor - Multi-platform tool for writing stories and novels, using FileKit to select project directories and images
• DevAnalyzer - Developer productivity tool for analyzing and understanding software projects, using FileKit for file and directory handling in its project analysis workflow

Using FileKit in your project? Let us know!

📚 Documentation

Visit our documentation to learn more: https://filekit.mintlify.app

• FileKit Introduction
• Getting Started Guide
• Core API Documentation
• Dialogs Documentation

Migrate from FileKit 0.8 to 0.10 by following the migration guide.

🚀 Quick Start

Installation

// build.gradle.kts
dependencies {
    implementation("io.github.vinceglb:filekit-core:$version")
    implementation("io.github.vinceglb:filekit-dialogs:$version")
    implementation("io.github.vinceglb:filekit-dialogs-compose:$version")
    implementation("io.github.vinceglb:filekit-coil:$version")
}

Follow the installation guide to learn how to install and setup FileKit in your project.

Usage Examples

// Pick a file
val file = FileKit.openFilePicker()

// Pick multiple files
val files = FileKit.openFilePicker(mode = FileKitMode.Multiple())

// Pick only images
val imageFile = FileKit.openFilePicker(type = FileKitType.Image)

// Pick a directory
val directory = FileKit.openDirectoryPicker()

// Save a file
val contentToSave = "Hello FileKit!"
val file = FileKit.openFileSaver(
    suggestedName = "document",
    defaultExtension = "txt",
    allowedExtensions = setOf("txt", "md"),
)
file?.writeString(contentToSave)

// Work with files
val myFile = FileKit.filesDir / "document.pdf"
println(myFile.name)
println(myFile.size())
myFile.writeString("Hello, World!")

// Image operations
val compressedBytes = FileKit.compressImage(
    bytes = imageFile.readBytes(),
    quality = 80,
    maxWidth = 1024,
    maxHeight = 1024
)

See the quickstart guide to learn more about the different file operations and utilities available in FileKit.

📦 Modular Structure

FileKit is designed to be modular, allowing you to include only what you need:

• FileKit Core: Basic file operations and the PlatformFile abstraction
• FileKit Dialogs: File pickers and save dialogs
• FileKit Dialogs Compose: Compose Multiplatform integration
• FileKit Coil: Integration with Coil for image loading

🙏 Credits

FileKit stands on the shoulders of giants. Special thanks to:

• compose-multiplatform-file-picker
• peekaboo
• Calf
• jnafilechooser
• swing-jnafilechooser
• nativefiledialog
• IFileDialogImp
• IntelliJ Community Foundation
• file_picker (flutter)

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