PDF Editor

MountZoft Labs

About this app

Whether you need to sign a contract, fill out a form, redact confidential information, or annotate worksheets, PDF Editor provides a powerful suite of native tools to modify, draw, and write on your documents safely. Built entirely for offline, on-device use, your sensitive files never travel to external cloud servers—giving you total control and absolute privacy over your data.

Why choose PDF Editor?
• 100% Secure & Offline: No account creation, no online uploads, and no data tracking. Every edit is processed directly on your storage with zero cloud reliance.
• Interactive Welcome Sandbox: Start editing instantly! The app automatically generates a hands-on sample page walkthrough to help you comfortably practice using all tools before opening your real files.
• No Watermarks & No Hidden Fees: Enjoy a clean, professional workspace layout with unlimited native PDF exports completely free.

Key Features & Capabilities:

✏️ Add, Format, & Edit Text
Tap anywhere to insert responsive text boxes. Easily scale font sizes, customize typography (Bold, Italic, Regular), and pick high-contrast colors. Integrated with automatic multiline text wrapping to prevent overlays from running off-canvas.

🖋️ Signature & Pen Drawing Tool
Sign contracts, sketch diagrams, or handwrite annotations with the dynamic digital Pen. Easily customize your ink color and change the stroke width to sign documents gracefully on-screen.

🔒 Pro Redactions & Whiteout Blocks
Securely redact confidential information, block out private numbers, or highlight segments using adjustable rectangular cover blocks. Customize colors from solid whiteouts to black redactions or transparent overlays.

📷 Insert & Rotate Images or Stamps
Add your headshot, corporate seal, logo, or pre-made signature graphic to the PDF. Use drag-to-resize handles and precise rotation controls to place stamps custom-fit to any line.

⚡ Sharp, High-Resolution PDF Rendering
Powered by native graphics engines, background pages render with razor-sharp 2x vector point resolution. This ensures fine text and complex graphics remain beautifully readable when editing.

💾 Professional Vector-Saving Engine
Compile and output your files with immaculate precision. The export engine merges your added shapes, native fonts, images, and drawings perfectly with the original PDF vector assets, maintaining compact file sizes and high resolution.

Take full control of your document workflows with an editor designed to be fast, beautiful, and strictly private. Download PDF Editor today!

What’s new

PDF Editor made with Google AI Studio.