Free, No-Ads, Lightweight & Offline

Fast Markdown and Text Editor.

Notepad Speed, Pro Markdown Features.
Packed with 1-click math & chemistry toolbars, interactive mind maps, smart preview sync, and seamless printing or PDF/Word exports.

Get it from Microsoft Store Download from GitHub
FastMD Live Preview and Markdown Editor Interface

All-in-One Markdown & Writing Toolkit

Everything you need in a single lightweight desktop editor. Scan below to find any feature instantly.

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Math & Science

  • LaTeX Math
  • KaTeX Rendering
  • mhchem Chemistry (\ce{})
  • Visual Math Toolbar
  • Visual Chemistry Toolbar
  • Inline & Display Math
  • Matrices & Integrals
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Diagrams & Mind Maps

  • Interactive Mind Maps (F10)
  • Mermaid Flowcharts
  • Sequence Diagrams
  • Gantt & ER Diagrams
  • Mind Map Node Jump
  • Click-to-Zoom Viewer
  • Export SVG & PNG
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Preview & Navigation

  • Line-Level Bi-Directional Sync
  • Double-Click Preview to Jump
  • Clickable Task Checkboxes
  • Reading Mode (F11)
  • Go To Line & Outline (Ctrl+G)
  • Searchable Document Outline
  • Synchronized Scrolling
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Editing & Formatting

  • Auto Format Document (Shift+Alt+F)
  • ASCII Table Prettifying
  • Table Grid Picker (Ctrl+Alt+T)
  • Command Palette (F1)
  • 190+ Code Syntax Languages
  • Convert Case & Whitespace Tools
  • Multiple Tabs & Tab Dragging
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Rich Elements & Extras

  • GitHub Callouts ([!NOTE], [!TIP])
  • Dynamic [TOC] Table of Contents
  • Footnotes & Citations
  • Definition Lists
  • Text Highlight (==text==)
  • Subscript & Superscript
  • PDF Page Breaks (Ctrl+Enter)
  • YAML Front Matter
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Export, Viewers & Files

  • PDF Export (with Bookmarks)
  • Word (.docx) & EPUB Export
  • Self-Contained HTML Export
  • Native Image Viewer (Rotate/Zoom)
  • Native PDF & HTML Viewers
  • Workspace File Tree (F8)
  • Auto Save & Crash Recovery

Why Choose FastMD?

Built for writers, students, researchers, and developers who need blistering speed, powerful scientific notation, mouse-free productivity, and distraction-free writing.

Instant Startup & Zero Lag

Launches in under 0.5 seconds with a tiny memory footprint (~250 MB). Native C++20 engine guarantees zero typing latency or stutter, even on 50,000+ line documents.

1-Click Math & Chemistry Toolbars

No need to memorize complex LaTeX syntax! Insert KaTeX math equations (matrices, integrals, Greek symbols) and mhchem chemical formulas (\ce{H2O}, reactions) with 1-click visual toolbar previews.

Command Palette & Synonym Search (F1)

Press F1 to search any command by name or smart synonym (e.g. typing pdf, wrap, h1, or table). Execute any menu action instantly without touching the mouse.

Line-Level Bi-Directional Sync

Never lose your place. Double-click any rendered line, heading, or callout in the live preview to jump directly to its source line in the editor. Preview checkboxes update source text interactively.

Mode-Aware Printing & Page Setup

High-fidelity printing (Ctrl+P) that adapts to active mode (Markdown vs Code), customizable paper size/margins (Page Setup), page break controls (Ctrl+Enter), and PDF exports with clickable heading bookmarks.

Mind Maps & 100% Offline Security

Press F10 for interactive mind maps with node-to-source jump. 100% offline with zero cloud connections, zero telemetry, no user account required, no popups, and no subscription fees.

By The Numbers

See how a native C++ and Qt 6 desktop application stacks up against typical Electron-based editors.

Performance Metric Typical Electron Editor FastMD (C++ / Qt) Efficiency Difference
Base Download Size 100 MB – 150 MB ~1.5 MB ~100x smaller executable
Bundled browser engine Yes (Chromium per app) None (shared OS WebView2) Nothing extra shipped
Average Idle RAM Usage 500 MB – 1000 MB ~250 MB (incl. shared preview) ~2–4x lighter memory footprint
Cold Startup (window visible) 2.0s – 4.0s ~0.4–0.5s ~5–8x faster launch speed
Cloud Connections & Telemetry Dozens of background requests None (100% Offline) Zero background data transfer