PiMark

PiMark -- The Smart Markdown Viewer

PiMark is a beautifully crafted, native Markdown viewer designed for developers, writers, and knowledge workers. Open any .md file and instantly see it rendered with rich formatting, math equations, diagrams, and more.

Available on iPhone, iPad, and Mac with a private, local-first workflow. All core features are available after download; optional tips simply support ongoing development.

-- CORE FEATURES --

* Rich Markdown Rendering
- Full CommonMark + GitHub Flavored Markdown support
- Syntax highlighting for 10+ programming languages
- Tables, task lists, footnotes, and extended syntax (==highlight==, ^superscript^, ~subscript~)

* Math & Diagrams
- LaTeX math equations rendered via KaTeX (inline and block)
- Mermaid diagrams (flowcharts, sequence diagrams, Gantt charts)
- PlantUML support for technical diagrams

* Presentation Mode
- Turn any Markdown file into a slideshow with --- separators
- Full-screen presentations powered by reveal.js
- LaTeX and Mermaid rendering within slides
- Export to PPTX for Keynote/PowerPoint (Mac)

* AI-Powered Assistant
- Built-in AI sidebar (Claude, Kimi, GLM, DeepSeek, Doubao)
- Explain, translate, summarize, rewrite, or ask questions about your content
- Bring your own API key -- your data stays private

* Export & Share
- PDF export with A4 pagination (Mac)
- HTML export with GitHub-style CSS (Mac)
- Share rendered content via system Share Sheet (iOS)
- Word (.docx) and PNG export (Mac)

* Platform-Native Experience
- Mac: QuickLook extension, Finder thumbnails, Spotlight integration
- iPad: Split-view sidebar with recent files, drag & drop
- iPhone: Optimized single-column layout, file picker
- All: Dark mode, multiple themes, adjustable fonts

* Reading Experience
- 4 built-in themes (Light, Dark, Sepia, GitHub)
- Adjustable font size and zoom
- Table of Contents sidebar (Mac)
- Mini-map and Zen reading mode (Mac)
- Pull-to-refresh for live file updates (iOS)

PiMark is built with Swift and SwiftUI, runs natively across all Apple devices, and respects your privacy -- no telemetry, no tracking, no account required. Optional in-app tips do not change feature access; they only support continued development.