Android app · Document

PDF Toolkit

Portable PDF tools for common document actions and lightweight file workflows.

Get it on Google Play ↗ Source on GitHub ↗

Privacy-first Android app for everyday PDF tasks. Merge, split, sign, and convert documents entirely on device — your files never leave your phone or tablet.

Package: com.michael.pdftoolkit

Features

• Home hub — Recent documents, search, and quick access to every tool
• Merge PDFs — Queue multiple files, reorder them, and combine into one document
• Split PDFs — Extract custom page ranges into separate PDFs
• Sign PDFs — Draw vector signatures, adjust stroke color and width, save reusable signatures, and stamp them onto selected pages
• Markdown to PDF — Write or paste Markdown and generate a formatted PDF locally
• Share & save — Export completed documents from the app

All processing runs offline. PDF Toolkit does not upload your documents to external servers.

Tech stack

• Kotlin · Jetpack Compose · Material 3
• Navigation Compose · ViewModel · Room
• PDFBox Android for PDF operations
• Roborazzi for Play Store screenshot generation

Play Store assets

./gradlew generatePlayStoreAssets

Project layout

├── app/                 Android application module
├── gradle/              Version catalog and wrapper

├── build.gradle.kts     Root Gradle config
└── settings.gradle.kts