Features
Discover the powerful capabilities of SignioPDF
Core PDF jobs, without heavyweight software chrome
PDF Reading
Smooth rendering, fast opening, thumbnails, zoom controls, and theme switching for everyday reading.
Text Editing
Click anywhere to add text, use system fonts, customize colors, and fine-tune styles and spacing.
E-Signature
Draw signatures, upload images, remove white backgrounds automatically, and keep a reusable signature library.
Symbol Annotation
Insert common symbols for forms and markup with customizable size and color.
Highlight
Use 5 highlight colors, adjust opacity, and mark free-form or selected text precisely.
Free Draw
Annotate with 30 colors and adjustable brush size for handwritten notes and markups.
Page Management
Delete, rotate, insert, and reorganize pages with lightweight controls that stay out of your way.
Undo / Redo
Keep up to 50 steps of history while working through detailed edits and review cycles.
Cross-Platform
Designed for Windows, macOS, and Linux with the same calm, lightweight editing experience.
Built for practical document work
- Page Navigation: Navigate with thumbnails, jump to any page
- Inline Editing: Click to create, type directly
- Image Upload: Use PNG, JPEG, or WebP signature images
- Checkmarks, circles, squares, triangles, and stars for forms
- Adjustable highlight opacity and free-form marking
- 30 Colors and adjustable brush size for drawing