MarkSync PDF

MarkSync PDF is a modern, fast, and fully offline desktop Markdown editor. It features a beautiful dark-themed interface with a side-by-side live preview. Built for professionals and students alike, it supports advanced formatting like Mermaid flowcharts, MathJax equations, and code syntax highlighting. When you're ready, export your work directly to a high-quality PDF with a single click (i.e. no cloud required).

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Development Log

[v1.2.8] 

Implement 1:1 synchronized scrolling

Added

• Added seamless sync scrolling between the markdown editor and live preview

Improved

• Pevents UI from freezing when editing large documents
• Implemented in-memory DOM caching for instantaneous manual opens (0ms delay).

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[v1.2.6] 

Optimised build size and exclude non-essential packaging assets

Improved

• Installer size has been reduced.
  

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[v1.2.5] 

High-Contrast PDF Print Engine, One-Click Code Copy & User Manual Expansion

Added

• One-Click Code Block Copy: Added interactive copy buttons (.copy-code-btn) to all rendered code blocks with animated checkmark feedback ("Copied!") and native clipboard integration.
• Flowchart & Syntax Templates: Added comprehensive Mermaid flowchart examples (Left-to-Right and Top-to-Down pipeline diagrams) and copyable syntax templates directly into the user manual.

Improved & Refined

• High-Contrast PDF Print Engine: Overhauled @media print with GitHub Light syntax highlighting for highlight.js code blocks (distinct coloring for keywords, strings, functions, numbers, and comments) in exported PDFs.
• Alert & Callout Print Styles: PDF print engine now renders full tinted backgrounds and colored borders for Note, Tip, Important, Warning, and Caution callouts.
• Smart Page-Break Handling: Added break-inside: avoid to code blocks, tables, callout alerts, and blockquotes to prevent awkward splits across PDF pages.
• PDF Math Contrast: Adjusted KaTeX formula contrast (#0f172a) and task checklist alignment for crisp document exports.
• UI & Links: Updated author/product links to the official itch.io store page (jctool.itch.io/marksync-pdf) and streamlined toolbar labels.

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[v1.2.2]

Math Formula Syntax & KaTeX Fixes

Fixed

• LaTeX Math Parsing: Resolved edge-case syntax parsing bugs when rendering inline ($...$) and block ($$...$$) mathematical equations.

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[v1.2.1]

In-App User Manual & Documentation Modal

Added

• Integrated User Manual Modal: Added an in-app viewer to quickly access the complete Markdown Syntax Cheat Sheet and application guide directly from the header toolbar.

Fixed

• Documentation Formatting: Fixed syntax highlighting formatting and layout typos in documentation files.

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[v1.2.0] 

Table Border Customization

Added

• Borderless Tables Toggle: Added a "Hide Table Borders" checkbox control to the top toolbar, enabling clean, minimalist table layouts across both live preview and PDF output.

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[v1.1.5] 

UI/UX Visual Consistency & Polish

Improved & Refined

• Unified Dark Workspace Theme: Standardized color palettes across the split-pane workspace, toolbar controls, status tags, and modals.
• Modern Control Aesthetics: Enhanced slider styling, custom dark scrollbars, glassmorphism modal backdrops, and active button states.

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[v1.1.2] 

Branding & Header Integration

Added

• Logo & App Icon: Integrated the official MarkSync PDF icon into the application title bar.
• Author Branding: Added external shortcut link to the JCTool creator page.

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[v1.1.0] 

Real-Time Dynamic Typography Engine

Added

• Interactive Spacing Sliders: Introduced real-time layout sliders in the top toolbar:
  • Font Size (12px – 28px): Dynamically scales base body text.
  • Title Size (1.2em – 3.5em): Scales headings from H1 down to H4.
  • Line Spacing (1.2 – 3.0): Adjusts line height for compact or airy reading.
  • Paragraph Gap (0.5em – 2.5em): Customizes vertical rhythm between blocks.
• CSS Variable Sync: Live slider values automatically synchronize with the DOM and transfer seamlessly into the PDF print pipeline.

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[v1.0.5] 

GitHub-Style Alert Callouts

Added

• Rich Markdown Alerts: Integrated native rendering for all five GitHub callout types ([!NOTE], [!TIP], [!IMPORTANT], [!WARNING], [!CAUTION]) with custom SVG icons and colored accent borders.

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[v1.0.0] 

Initial Release of MarkSync PDF Studio

Added

• Real-Time Split-Pane Workspace: Dual-pane distraction-free Markdown editor with live preview rendering.
• Code Highlighting: Multi-language syntax highlighting powered by highlight.js.
• Diagrams from Text: Live visual flowchart and diagram generation powered by Mermaid.js.
• LaTeX Mathematics: Full mathematical equation typesetting powered by KaTeX.
• PDF Export & Preview Modal: Built-in Chromium print-to-PDF pipeline with immediate in-app PDF preview.
• Drag-and-Drop File Import: Support for opening .md and .txt files via drag-and-drop.
• Document Auto-Save: Persistent local storage preserving active documents across app restarts.