MOC Office

A modern, privacy-first PDF reader and editor for Android. 12 built-in tools, 100% offline, zero trackers — built with Jetpack Compose and Material Design 3.

Android PDF Suite

Your Documents. Your Device. Your Rules.

🛠️ In Development — Release Date: 18 August

Kotlin 100%Jetpack ComposeMaterial Design 3PDF.js EngineGPL-3.0

MOC Office is a feature-rich, completely offline PDF reader and editing suite built for Android. Powered by Mozilla's PDF.js and iText Core, it delivers 12 professional-grade document tools with zero ads, zero tracking, and zero cloud dependency — all processed entirely on your device.

View on GitHub →Download APK →

How MOC Office Works

Open

Browse local storage or recents

→

Read

Scroll, zoom, search & bookmark

→

Select Tool

Pick from 12 built-in PDF tools

→

Process

100% on-device, no upload

→

Export

Save or share instantly

Platform Capabilities

📖

Advanced PDF Viewer

Scroll Modes: Vertical continuous scroll and horizontal page-flip modes with global snap-to-pages preference.
Auto-Scroll: Hands-free reading with adjustable speed control for uninterrupted reading sessions.
Full-Text Search: Instantly find any phrase or keyword across the entire document with highlighted results.
Table of Contents: Navigate large documents using embedded outlines and anchor bookmarks.

🛠️

12 Built-in PDF Tools

Merge & Split: Combine multiple PDFs or slice by page ranges and individual pages.
Compress: Optimize file size with quality presets for sharing or archiving.
Rotate & Reorder: Rotate individual or all pages; drag-and-drop reordering.
Watermark & Page Numbers: Add text/image watermarks with custom positioning and configurable page numbering styles.

🔒

Security & Privacy

Lock / Unlock PDFs: Encrypt documents with passwords using iText + Bouncy Castle cryptographic providers.
Remember Passwords: Encrypted DataStore securely saves passwords — auto-submitted on reopen.
100% Offline: All tools run entirely on-device. No cloud upload, no network requests except optional update checks.
No Telemetry: Zero trackers, zero analytics, zero ads — GPL-3.0 licensed and fully auditable.

🎨

Modern Android UX

Material You: Dynamic Color theming adapts to your wallpaper on Android 12+ devices.
AMOLED Black Theme: True-black variant for OLED displays to maximize battery savings.
Responsive Layouts: Fully optimized for phones, tablets, portrait, and landscape orientations.
Focal-Point Zoom: Double-tap zooms centered on the tapped location with configurable zoom level (1.1×–5×).

🔄

Image Conversion

Images → PDF: Convert one or multiple JPG/PNG images into a clean, shareable PDF document.
PDF → Images: Export any PDF page as a high-quality PNG or JPG image.
Page Management: Remove specific pages, or reorder entire documents non-destructively.
Attachments: View and download attachments embedded inside PDF files.

⚡

Architecture & Performance

Clean MVVM: Strict Clean Architecture with Koin dependency injection and lazy singleton scoping.
Room + DataStore: Fast metadata queries with Room DB and encrypted preferences with DataStore.
Coil Image Loading: Memory-efficient thumbnail rendering across the file browser grid.
ProGuard/R8: Code obfuscation and shrinking enabled in release builds for minimal APK size.

Tech Stack

UI & Theming

Layer	Technology
UI Framework	Jetpack Compose
Design System	Material Design 3
Dynamic Color	Material You (Android 12+)
Image Loading	Coil

Data & Storage

Layer	Technology
Database	Room (metadata, favorites, recents)
Preferences	DataStore (encrypted settings)
DI Framework	Koin (lazy singletons)
Logging	Timber

PDF Engine

Layer	Technology
Renderer	Mozilla PDF.js (WebKit WebView)
PDF Manipulation	iText Core + Bouncy Castle
Security	FileProvider, scoped storage
Updates	GitHub Releases in-app updater

Why MOC Office