DiffMaster: Compare Documents

DiffMaster is the professional file comparison tool for developers, writers, and everyone who needs to spot every difference between two files — instantly and offline. Compare source code, PDF documents, Word files, JSON configs, Markdown notes, and much more, all with beautiful side-by-side diffs and precise word-level highlighting. ◆ CORE FEATURES • Side-by-Side Comparison Two synchronized panels with smooth scrolling. Additions in green, deletions in red, modifications in orange — differences at a glance. • Word-Level Diff Highlighting Not just changed lines — pinpoint the exact words that were modified within each line. • Native PDF & DOCX Support Compare PDF and Word documents directly. Text is extracted on-device with zero third-party dependencies. • 30+ File Formats Swift, Python, Java, JavaScript, TypeScript, Go, Rust, C, C++, Kotlin, Ruby, PHP, JSON, XML, YAML, TOML, Markdown, HTML, CSS, SQL, and many more. • Syntax Highlighting Automatic syntax coloring for 36 programming languages: keywords, strings, comments, and numbers stand out beautifully. • Diff Navigation & Search Jump to previous/next difference with one tap. Search for any keyword inside comparison results. • Export in 4 Formats Unified diff, HTML report, PDF report, or plain text. Share instantly via the system share sheet. • Clipboard Compare Paste text directly from your clipboard — no need to save a file first. • Drag & Drop Drag files onto the selection area to import them instantly. • Control Center Widget (iOS 18+) One-tap launch straight from Control Center. • Share Extension Send files to DiffMaster right from Files, Mail, or any app that supports sharing. ◆ PERSONALIZATION • Dark / Light Mode — follows system setting or switch manually • 6 Color Themes — Classic Blue, Ocean Green, Warm Orange, Elegant Purple, High Contrast, Rose Pink • Adjustable Font Size — slider control for the perfect reading size • 21 Interface Languages — English, Simplified & Traditional Chinese, Japanese, Korean, German, French, Spanish, Portuguese, Italian, Dutch, Polish, Swedish, Danish, Finnish, Norwegian, Russian, Turkish, Arabic, Indonesian, Thai ◆ EFFICIENT WORKFLOW • Keyboard Shortcuts (iPad) — Cmd+↑/↓ to navigate diffs, Cmd+F to search, Cmd+E to export • Recent Comparisons — auto-saved history with one-tap re-compare • Diff Statistics — see added, deleted, and modified line counts instantly • Landscape Support — wider view, ideal for iPad • Universal File Access — works with iCloud Drive, Files app, and every document provider • Siri Shortcuts — trigger DiffMaster with App Intents ◆ PRIVACY FIRST DiffMaster runs 100% offline. No personal data is collected. Files are processed only on your device and never uploaded. Zero third-party SDKs. Zero network requests. Zero tracking. ◆ PERFECT FOR • Developers reviewing code changes and pull requests • Writers and editors proofreading document revisions • Legal & compliance teams comparing contract versions • DevOps engineers diffing configuration files across environments • Students comparing solutions with reference answers • Translators checking source and translated documents ◆ PERFORMANCE • Handles files with 10,000+ lines — instant results, no slowdown • File access permissions remembered automatically — no repeated approval prompts • Smooth and reliable — built on Apple's latest technologies Download DiffMaster today and never miss a difference again.