Changelog — MDViewer

v1.16 — June 11, 2026

Context menu in file tree — right-click files and folders for Open in New Tab, Reveal in Finder, and New File.
New File from folder — creates an untitled document with the save panel pre-set to the selected folder.

v1.15 — June 6, 2026

Drag & drop tabs — reorder open tabs by dragging them in the tab bar.
Copy button for code blocks — one-click copy for any fenced code block in your preview.
PDF export from editor — Export as PDF now works when you're editing, not just in preview mode.
Find fix — ⌘F reliably opens search in the active tab.

v1.14 — May 31, 2026

Clickable plain links — URLs in your preview are now clickable even without Markdown link syntax. Works with http, https, www, and bare domains like getmd.ma.
Default app reminder — MDViewer gently reminds you to set it as the default .md viewer if you haven't already, once every 14 days.

v1.13 — May 27, 2026

New File (⌘N) — create a new document from the menu, empty state screen, status bar, or the + button in the tab bar. Opens instantly as an untitled draft in edit mode.
Open Recent — quickly reopen recent files from File → Open Recent or by right-clicking the Dock icon. Clear the list anytime.
Untitled draft fallback — if you leave the editor on an empty untitled document, you get a dedicated screen with Edit, Open File, and Discard Draft actions instead of a blank page.
Stable state screens — Untitled Document, Unsaved Changes, and Large File screens now share a consistent vertical layout. No more visual jumping when switching between states.
Safer window close — closing a window with unsaved changes now goes through a system confirmation dialog instead of silently discarding tabs.

v1.12 — May 19, 2026

No more duplicate windows — files opened from Finder now appear as tabs in the existing window instead of spawning a new one.
Token count in QuickLook — QuickLook previews now show an approximate token count badge, handy for checking LLM context size at a glance.
File tree fix — the sidebar file tree now correctly starts from your Home directory instead of showing the parent folder.
Show Window menu item — a new Show Window option in the Window menu lets you restore a hidden window.
Dock menu improvements — right-click the Dock icon to reliably show or create a window, even after closing all windows.

v1.11 — May 15, 2026

Dock menu restore — right-click the Dock icon to show or create a new window. Works reliably even after closing all windows.
Clean window on restore — restoring a closed window opens a fresh empty tab instead of the previously loaded file.
CRLF line endings — files with Windows-style line breaks (\r\n) now display correctly.
Duplicate window fix — opening the same file no longer creates a second window.

v1.10 — May 11, 2026

Export to PDF — press ⌘⇧E or choose File → Export as PDF to save any document as a clean PDF. Smart pagination keeps tables, code blocks, images, and diagrams intact across page breaks. Headings stay with their content. Portrait or Landscape orientation right in the save dialog.
JSON formatting fix — the Format button no longer auto-saves to disk. Changes stay in memory until you explicitly press ⌘S.

v1.9 — May 6, 2026

Unsaved changes are now clearly visible — edited documents show an Unsaved Changes chip in the viewer.
Review unsaved edits before deciding — you can save, discard, or keep editing without leaving the current document.
Safer closing behavior — closing a tab, a window, or the app now prompts before unsaved changes are lost.

v1.8 — May 5, 2026

Auto-reload on external changes — edit a file in another app, and MDViewer picks up the changes automatically. No more stale content after saving in VS Code or Vim.
File-deleted banner — if a file is moved or deleted while open, an orange banner appears with options to save a copy or close the tab. No more silent surprises.
Large file warning — files over 2 MB show a size indicator and two buttons: “Render Anyway” or “Open in Editor.” Prevents accidental freezes on auto-generated dumps.
Wide tables scroll horizontally — tables wider than the content area now get a horizontal scrollbar instead of overflowing into the right edge.
Performance improvements — faster edit/view switching (content updates without full page reload), background Markdown parsing, debounced search, and smoother tab handling.
GFM table escape fix — \| inside table cells is now treated as a literal pipe, matching the GitHub Flavored Markdown spec.

v1.7 — May 4, 2026

KaTeX math formulas — inline math with $...$ and display math with $$...$$ now render beautifully. Supports matrices, fractions, Greek letters, and full LaTeX notation.
Improved toast notifications — toasts now include a close button and configurable display duration for a cleaner editing experience.

v1.6 — May 3, 2026

QuickLook Preview in Finder — press Space on any .md, .json, or .mermaid file in Finder to see a fully rendered preview without launching the app. Works in column view, icon view, and full-screen Quick Look. The extension installs automatically with MDViewer.
Mermaid contrast fix — diagrams with custom node colors now automatically get dark or light text based on background brightness. No more unreadable labels in dark mode.
Automatic update checks — MDViewer now checks for updates on every launch to make sure you always have the latest version.

v1.5 — May 2, 2026

JSON file viewer — open .json files directly in MDViewer. JSON renders as an interactive tree with collapsible nodes, just like browser DevTools. Click [−]/[+] to expand or collapse any level.
JSON Format button — one-click pretty-print that preserves key order and saves to disk.
Syntax highlighting — fenced code blocks now render with color highlighting for 180+ languages (Python, JavaScript, Swift, TypeScript, SQL, and more). GitHub-style theme, adapts to light and dark mode.

v1.3 — April 30, 2026

Open multiple files and folders — Cmd+O supports multi-select and folder selection. Drag and drop a folder onto MDViewer to open all Markdown files as tabs. Drop files onto an open document too.
Standalone Mermaid files — open .mmd and .mermaid files directly from Finder, drag and drop, or Cmd+O. Diagrams render with the same lightbox, zoom, and dark mode support.
Edit/View toggle button — floating pill button in the top-right corner for quick mode switching. No more hunting through menus.
Online Markdown viewer — getmd.ma/viewer lets you view Markdown files in any browser. Drag and drop, fully private, same rendering as the desktop app.

v1.1 — April 29, 2026

Search (Cmd+F) — find text across headings, code blocks, tables, and body text. Matches highlight in yellow, current match in orange. Works in both preview and editor modes. Counter shows "2 / 7" and updates live.
Sparkle auto-updates — "Check for Updates" in the app menu. Signed and verified updates delivered through CDN.

v1.0 — April 2026

Initial release.

Inline editor — double-click any word to edit with the cursor exactly where you clicked. Cmd+S to save, Esc to return to reading.
Git history & diff — browse commit history for any file, click a commit to see a color-coded unified diff with line numbers.
Table of contents — smart sidebar tracks your scroll position, highlights the active heading, click to jump.
Tabbed interface — open multiple files in one window.
Mermaid diagrams — flowcharts, sequence diagrams, ER diagrams render as interactive SVGs. Click to open a full-screen lightbox with zoom and pan.
File tree — browse project files from the sidebar, rooted at your git repository.
Default app for .md — set MDViewer as your default Markdown viewer in one click.
Native macOS app — built with SwiftUI, launches instantly, uses minimal memory. Full GitHub Flavored Markdown support.
Dark mode — follows your system preference automatically.