SignioPDF 1.3.5 Features
A local-first workspace for PDF editing and focused Markdown or TXT reading
Comfortable reading across three document formats
PDF Reading
Fast rendering, page thumbnails, navigation, zoom controls, fit modes, and corrected previews for rotated pages.
Markdown Reading
GitHub Flavored Markdown with tables, task lists, code, quotes, links, safe local images, and a heading outline.
Plain Text Reading
Continuous reading that preserves line breaks and indentation across UTF-8, UTF-16, and GB18030 files.
Reading Controls
Choose sans, serif, or monospace fonts and adjust text size, line height, and content width.
Five Themes
Warm Paper, Warm Night, Ocean Blue, Forest Green, and Soft Lavender, plus system-following mode.
External Editor Handoff
Remember separate editors for Markdown and TXT, reopen them quickly, and refresh saved changes from disk.
Sign, annotate, and organize without a heavyweight suite
Inline Text
Add multiline text with system fonts, size, color, spacing, bold, italic, drag positioning, and width controls.
E-Signatures
Draw or upload PNG, JPEG, or WebP signatures, remove white backgrounds, and manage a reusable library.
Symbols and Markup
Place form symbols, highlight selected text, add broad markup strokes, or draw freehand in adjustable colors.
Page Management
Insert, delete, rotate, reorder, and merge pages while using the thumbnail sidebar for context.
Undo and Redo
Keep a deep edit history, and print unsaved edits without changing the original PDF or its undo state.
Responsive Tool Strip
Pin important actions, reorder tools, and let lower-priority controls move into the overflow menu on narrow windows.
Prepare the page before the system dialog
- All pages, current page, or custom page ranges
- A4, A3, Letter, and Legal paper sizes
- Portrait or landscape orientation
- Actual size or fit-to-printable-area scaling
- Margins and grayscale output
- Includes unsaved text, symbols, signatures, highlights, and drawings
Your document content stays on your device
- No cloud upload is required for reading or editing
- Raw HTML in Markdown is disabled by default
- Local images are restricted to the document directory
- Absolute paths and directory traversal are blocked
- Document and image size limits protect app stability
- macOS App Sandbox permissions limit file access
Read freely, then unlock advanced work where the store edition requires Pro
Feature availability and purchase terms can vary by platform. The Mac App Store edition keeps reading free and uses SignioPDF Pro for editing, printing, and external editors.