PDF Ninja: Scanner & Editor

Content rating
Everyone
1+
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Content rating
Everyone
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About this app

Welcome to PDF Ninja, your ultimate, blazing-fast all-in-one PDF companion! Whether you are scanning paper receipts, reading a book at night, or adding detailed annotations to a work document, PDF Ninja delivers a powerful, seamless experience without the clutter.

🚀 POWERFUL HIGHLIGHTS & FEATURES:

📸 Smart Document Scanner
Turn your device into a portable scanner. Effortlessly digitize physical documents, receipts, and notes into high-quality PDFs using advanced edge detection and image enhancement.

✍️ Advanced Annotation & Drawing
Take full control of your documents. Use our feature-rich canvas to draw freehand, highlight text, and insert shapes (lines, arrows, circles, and rectangles). Add custom text labels, pinpoint dots, or even overlay images directly onto your PDF pages!

🌙 Dark Reader Mode
Save your eyes and battery! With a single tap, PDF Ninja intelligently inverts the colors of any PDF, providing a comfortable, true dark-mode reading experience perfect for nighttime viewing.

🗂️ Ultimate Organization
Keep your files tidy and accessible.
• Pin your most important files to your Favorites.
• Filter instantly by All, Edited, or Favorites.
• View files your way: toggle between List, 2-Grid, and 3-Grid layouts.
• Auto-group documents by month for easy timeline tracking.

⚡ High-Performance Navigation
Engineered for speed, PDF Ninja handles massive documents flawlessly. Enjoy ultra-smooth zooming and panning, plus an interactive, auto-hiding thumbnail strip that lets you jump between pages instantly.

➕ Create, Edit & Share
Create brand-new blank PDFs from scratch, generate PDFs from a selection of photos, or save and share your newly annotated files securely with anyone.

PDF Ninja is built for students, professionals, and anyone who needs a reliable, feature-packed PDF tool in their pocket. Get more done with less effort—download PDF Ninja today!
Scan, read, annotate, and organize PDFs effortlessly. Includes Dark Reader mode!
Updated on
Aug 11, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • No data collected
    Learn more about how developers declare collection

What’s new

Version 1.0 - Welcome to PDF Ninja! 🥷

• Built-in Scanner: Instantly scan physical documents to high-quality PDFs.
• Pro Annotation Tools: Draw, add text, arrows, shapes, and images directly onto any PDF page.
• Dark Reader Mode: Read comfortably at night with our smart PDF color inverter.
• Smart Organization: Pin favorites, filter edited files, and switch between List and Grid views.
• Peak Performance: Enjoy smooth zooming, lightning-fast rendering, and quick thumbnail navigation