Features
Discover the powerful capabilities of SignioPDF
PDF Reading
Smooth and Fast PDF Viewing
Smooth rendering, fast opening of all PDF files
- Page Navigation: Navigate with thumbnails, jump to any page
- Zoom Controls: Magnify, shrink, fit to width or page
- Thumbnail Preview: Quick visual navigation sidebar
- Theme Switch: Light and dark theme support
Text Editing
Add Text Anywhere
Click anywhere to add text, intuitive inline editing
- Inline Editing: Click to create, type directly
- System Fonts: Use any font installed on your system
- Custom Colors: Choose any color for your text
- Font Styles: Size, bold, italic options
- Letter Spacing: Fine-tune character spacing
E-Signature
Sign Documents Your Way
Draw or upload your signature with ease
- Handwritten Drawing: Draw signatures with mouse or touchpad
- Image Upload: Use PNG, JPEG, or WebP signature images
- Auto Background Removal: Automatically removes white backgrounds
- Signature Library: Save and manage your frequently used signatures
Symbol Annotation
18 Common Symbols
Insert common symbols with a single click
- Checkmarks and Crosses: ✓ ✗ Perfect for forms
- Circles and Squares: ○ ● □ ■ Filled or outline
- Triangles and Stars: △ ▲ ★ Various shapes
- Custom Size and Color: Fully customizable appearance
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Highlight
Highlight Important Content
Free-form highlighting to mark key points
- 5 Highlight Colors: Multiple colors to choose from
- Adjustable Opacity: Control transparency level
- Free-form Marking: Highlight any area freely
- Text Selection: Precisely select and highlight text
Free Draw
Draw Freely on PDF
30 colors for creative annotations
- 30 Colors: Rich color palette for any need
- Adjustable Brush Size: 1-10px stroke width
- Smooth Drawing: Natural pen-like experience
Page Management
Organize Your PDF Pages
Full control over your document structure
- Delete Pages: Remove unwanted pages
- Rotate Pages: Rotate any page
- Reorder Pages: Rearrange page order
- Add Blank Pages: Insert new blank pages
- Merge PDFs: Combine multiple PDF files
Edit Support
Undo & Redo
Never worry about mistakes
- 50 Steps History: Undo up to 50 actions
- Real-time Preview: See all edits instantly
- Keyboard Shortcuts: Ctrl+Z / Ctrl+Y support
Technical Excellence
Tauri Framework
Modern desktop framework for small, fast apps
Rust Backend
High-performance PDF processing engine
React Frontend
Modern UI with TypeScript
Multi-Language
Chinese and English support
System Requirements
Windows
Windows 10+
macOS
macOS 10.15+
Linux
Ubuntu 20.04+
Experience Lightweight and Efficient PDF Editing!
Download SignioPDF and simplify your PDF workflow