Changelog

A full audit of the editor, and everything it turned up. Outdenting a block of lines can't silently swallow the lines below it anymore, brackets in ordinary prose like a[0] or [WIP] stay exactly as you typed them instead of turning link-blue, and Tab and ⌘] finally indent by the same amount, so Shift-Tab undoes what you just did. Plus more of your markdown actually renders in the preview.

• Outdent can't eat your text. Outdenting a multi-line selection left the selection overhanging into the lines below it, so the next keystroke silently deleted them. The selection math was rebuilt and now lands exactly on the outdented lines.
• Brackets in prose survive the preview. a[0], [WIP], [Smith 2020] — anything in square brackets lost its brackets and got painted link-blue. Now only real links get link treatment.
• Lists start from a blank line. ⇧⌘L on an empty line begins a list instead of doing nothing, blank lines inside a selection stay blank, indented and */+ bullets toggle off cleanly, and un-bulleting a task line removes the whole - [ ] prefix.
• Tab and ⌘] agree. Both indent four spaces now, so Shift-Tab undoes a ⌘] instead of leaving mixed-width indentation behind.
• More markdown renders in the preview. Indented code blocks get code styling, \*escapes\* and entities like © resolve, nested blockquotes step visually instead of flattening, and images with quoted titles or spaces in the path show up instead of staying raw.
• Keyboard fixes. ⌘? opens Help even before you open a document, ⌘B in the find bar no longer edits your document behind the search field, ⇧⌘K wraps code instead of deleting the line, and ⌘Y/⌘U undo-family keys work in both panes.
• Honest copy. The Help tips now say which pane each trick lives in, mention .txt support, and list all four print-sheet controls.

The first real bug report came in — and this build fixes everything it found, plus the things it revealed along the way. Cmd+I now italicizes everywhere (a stock editor key binding was quietly eating it before the menu ever heard the keystroke), bolding a word in a rendered heading can't destroy the heading anymore, and the Report a Problem window now makes success unmistakable: the confirmation is always visible and the button flips to "Sent ✓" so you never wonder whether the click landed.

• Cmd+I, Cmd+[ and Cmd+] reach the Format menu now. The editor engine's built-in keymap was intercepting them in every pane and view mode. They behave exactly like their menu items.
• Formatting snaps to visible text. Selecting a word in the rendered pane could silently include hidden markdown syntax, so Cmd+B produced mangled markers. Inline formatting now trims the selection to what you can see — and stops wrapping the trailing newline on select-all.
• Report a Problem window fixed. Resizable and taller so nothing hides below the fold, pinned confirmation, disabled "Sent ✓" button after success, and a plain report number instead of a link that didn't work for anyone but me.
• One View menu. macOS provides one; MarkeMark was adding a second. Merged.

MarkeMark 3.1 gives you a way to tell me things — and gives me a way to know anyone's out there. Help → Report a Problem sends a bug report straight to me, with your app and macOS version attached automatically and nothing else unless you tick a box. And the app now says an anonymous once-a-day hello: a random ID, the version numbers, and feature-use counts. Never your documents, file names, paths, or searches — Help → Privacy & Data shows exactly what's sent, and one switch turns it off completely.

• Report a Problem. A short form in the Help menu. Optional email if you want a reply; the diagnostics log and a document fragment attach only if you opt in, per report. If the server's unreachable, you get a pre-filled email instead of a lost report.
• Anonymous usage beacon. Once a day: random ID, app version, macOS major version, feature counts. The full list — and the off switch — live in Help → Privacy & Data. Off means nothing is sent at all.

MarkeMark 3.0 is a new editing engine. Both panes are now views of the same document — the markdown text is the only thing that exists, and rendering is just how it's drawn. That's the reason the whole category of "editing the preview mangled my file" bugs is gone: there's no longer any code that turns rendered content back into markdown. And the window follows the file now — if Claude, a script, or another editor changes a file you have open, MarkeMark shows the change within a second, without touching your cursor.

• Live updates from other apps. A file changed on disk updates in the window in about a second. Unsaved edits are never overwritten without asking.
• Editing the rendered pane is safe now. Nested lists stay nested, checked todos stay - [x], code blocks keep their contents exactly. The code that could corrupt a file no longer exists.
• Tables render as tables. Click a cell and it turns back into markdown you can edit; click away and it renders again.
• Drag to rearrange list items. Grab the ⠿ handle on any bullet, todo, or numbered item — sub-items ride along.
• Markdown syntax hides until you need it. Markers like ** and # tuck away and reappear when your cursor lands on the line.
• Both panes scroll together properly — locked to the same line instead of guessing by percentage.
• One undo history across both panes, and undo returns you to the edit it reverted.
• Line numbers in the source pane, Cmd+T tabs, and a diagnostics recorder (Help → Show Diagnostics Log) that captures what happened when something goes wrong — never your document text.
• Menus you can trust. Fixed a bug where the Format menu and Undo could silently die in some windows.

Help → MarkeMark Tutorial now works from the launch picker. Before, clicking it on a fresh launch — when no document is open yet — was a silent no-op, and the first-launch auto-show never fired because it was gated on a document window appearing. Both paths now work.

• Tutorial opens from anywhere. Help → MarkeMark Tutorial works whether you're in the launch picker, an open document, or with no windows visible
• First-launch tutorial actually shows up. Auto-opens on the very first launch even if you dismiss the open panel without picking a file

Find bar, rewritten. Cmd+F was technically working but didn't feel like a Mac app — flat single-match treatment, results going stale on edit, no live highlighting in the rendered preview, no Cmd+G. Build 8 rebuilds it from the ground up with the visual language Safari and Xcode use, drives both panes from a single source of truth, and adds the missing keyboard verbs.

• Every match highlights — instantly. Type and yellow appears across the whole document; the match you're parked on glows orange with a ring, the way Safari does. Both the source pane and the rendered preview light up in lock-step
• The bar is fast. Cmd+F focuses the field the same instant the bar slides in. Cmd+F a second time re-selects the existing query so you can overtype
• Edits don't stale the matches. Type into the editor with the bar open and matches recompute live; your "current" pointer snaps to the closest surviving match
• ⌘G / ⇧⌘G cycle matches. Plus Return / Shift+Return do the same. Wrap-around triggers the system beep, the way every Mac app from 1984 does it
• Esc lands you on the current match. Restores focus to the editor at where you were parked, and persists the query to the system find pasteboard so the next Cmd+F (in this app or any other) starts with it pre-filled

Builds 5 and 6 didn't pan out — Build 5's bidirectional-editing fidelity changes had subtler regressions than the Quick Look break that Build 6 was meant to fix, and the test loop wasn't tight enough to catch them before shipping. Build 7 walks the editor, renderer, and preview-pane code back to Build 4's known-good state. Quick Look stays at the data-based path that worked through Build 4.

• Stable rendering and editing. Back to the Build 4 markdown pipeline and bidirectional sync — no new behavior, but no surprises either
• Quick Look unchanged from Build 6. Spacebar-preview a .md file in Finder renders cleanly. Text selection in the QL panel will return via a different approach in a future build

Reverts the Build 5 Quick Look change. Switching the QL extension to a view-based WKWebView to gain text selection broke QL preview in Finder — pulling the change back to the data-based path that worked through Build 4. The bidirectional-editing fixes from Build 5 all stay.

• Quick Look works again. Spacebar-preview a .md file in Finder renders cleanly. Text selection in the QL panel will return in a future build via a different approach
• All bidirectional editing fixes from Build 5 remain (checkbox toggle, Enter list continuation, *** round-trip, caret position after Enter, no bullet next to checkboxes)

A round-trip-fidelity pass on the bidirectional preview pane plus a Quick Look quality-of-life win. Edits in the rendered pane (toggle a checkbox, hit Enter inside a list) used to corrupt the markdown source in subtle ways; this build closes the loop. And spacebar-preview a .md file in Finder — you can finally select and copy text out of it.

• Quick Look text is selectable. Highlight and copy from the QL panel like any other text preview
• Enter continues lists in both panes. - [ ] foo, Enter → - [ ] on the next line. Same for -, *, +, and 1. / 1) lists. Empty item, Enter → exits list mode
• Toggling a checkbox no longer rewrites the line. Just that one [ ] ↔ [x] flips in the source, instead of round-tripping the entire HTML and occasionally leaving a raw <input> tag behind
• Bullet next to checkboxes — gone. Task-list items render with the checkbox alone, no leading dot
• Horizontal rules round-trip as ***. --- collides with YAML frontmatter at line 1; *** is valid CommonMark and doesn't collide
• Caret lands to the right of the checkbox after Enter inside a checkbox list, and exiting an empty checkbox mid-list drops you in a paragraph between the items instead of jumping to the bottom

The whole markdown rendering pipeline got rebuilt around markdown-it — a real CommonMark + GFM library, in place of the in-house regex passes that kept growing edge cases. The headline win: single newlines now render as line breaks, matching Obsidian's default and the way most people actually write. Schedules, todo lists, and any block where you wrote one item per line stop collapsing into a paragraph. The print preview also got a meaningful upgrade — adjustable margins, a finer font slider, and a two-row toolbar so the action buttons stop getting clipped in portrait.

• Line breaks render correctly. Type one item per line and you get one line per item — in the live preview, in PDF/HTML export, in print, and in Finder Quick Look. Same rendering everywhere
• Print preview formatting matches the live preview. The Cmd+P sheet now uses the same renderer, so what you see in the editor is what you'll print
• Quick Look preview formatting matches too. Space-bar a .md file in Finder and it renders the same way the app does
• Adjustable print margin. New slider in the print preview sheet — drag from 0.1″ to 1.0″ in 0.05″ steps, persists across sessions. The system print dialog clamps further at print time per printer
• Two-row print toolbar. Controls (font / margin / columns / orientation) live on row 1; Cancel / Save as PDF / Print on row 2 — fixes the truncated buttons in portrait (Ca… / Sav… / Pri…)
• Finer print-preview font slider. Step granularity dropped from 0.1 pt to 0.05 pt. Numeric readout removed — drag against the live preview; the ± buttons (and ⌘− / ⌘=) still nudge by 0.1 pt one click at a time

Known small regressions landing in 2.1.1: wiki-links [[Foo]], Obsidian highlights ==text==, and footnote syntax [^id] render as literal text — markdown-it doesn't ship with these by default. Each is a small plugin away.

A small polish pass on top of v2.0. Nothing dramatic — every change just makes the app sit a little more naturally next to native macOS chrome.

• Cleaner toolbar. The hairline under the toolbar is gone; buttons sit cleanly on the window background
• Unified icon palette. View-mode buttons in the toolbar and the divider lock now share the same gray ramp macOS uses for native toolbar items
• Smoother divider. Wider grab zone, refined scroll-lock pill, and a generous hover handoff so the cursor flips back to the standard arrow before you reach the lock
• App icon refreshed — Bebas Neue # on the site's slate brand, cleaner output across every size
• Social card. Links to markemark.app now render as a full-card preview on iMessage, Slack, X, and LinkedIn

v2.0 is everything since the first public release folded into one headline: press Space on any .md file in Finder and see it rendered — with inline images, syntax highlighting, and dark mode. That gesture was always the product; 2.0 is when it actually works end-to-end. Plus a new home at markemark.app with a redesign that finally does the app justice.

• Quick Look, for real. Spacebar on any .md or .markdown file shows a fully rendered preview — headings, code, tables, checklists, inline images. Open a folder once in the app, every file inside previews cleanly after that
• Inline images everywhere. Obsidian-style embeds (![[screenshot.png]]) and relative paths (![alt](refs/foo.png)) render in the editor's preview, in Quick Look, in HTML export, and in printed PDF. Your .md stays plain text on disk; images stay as files next to them
• Obsidian-style wiki links. [[page]], [[page|alias]], and [[page#section|alias]] render as subtle dark-purple underlined text across preview, HTML, PDF, print, and Quick Look. Edit the displayed text in the preview pane and it round-trips back as an alias
• Pane sync that stays out of the way. Scroll the editor, the preview follows the same proportion of the document. A sync caret tracks your cursor. Toggle sync off with ⇧⌘Y when a tall image pushes one pane ahead of the other
• Preview-pane shortcuts. Cmd+B/I/K, undo/redo, and friends work in whichever pane has focus — not just the editor
• ~3× faster keystroke-to-preview latency (550 ms → 200 ms). Native AppKit pane divider, layer-backed editor scroll, syntax highlighting that skips unchanged code blocks, and a Combine-driven render pipeline that keeps heavy work off the main thread
• New site, new home. markemark.app is the canonical URL. Real product screenshots, auto dark mode, and a scroll-scrubbed Quick Look preview in the hero

Native printing and the foundations of pane sync. The two big things people wanted from a markdown editor that takes itself seriously.

• Print & PDF with 1–9 column reflow. Cmd+P opens a live preview with a column stepper, portrait/landscape toggle, and a zoom slider that reflows text across the page. Checklists, weekly schedules, and reference cards finally fit on one page
• Pane sync. Scroll the editor, the preview follows. Scroll the preview, the editor follows. Both stay aligned to the block you're looking at, with a sync caret tracking your cursor within a paragraph
• Round-trip fidelity. Code-block language tags, footnotes, and bare URLs all survive editing in the preview pane intact — no more silent rewrites of your markdown
• Wiki links render in Quick Look too, matching the main app

Format shortcuts finally work where you'd expect them — in whichever pane has focus.

• Cmd+B/I/K, Cmd+Shift+X, and friends now work in the preview pane as well as the editor
• Strikethrough round-trips cleanly through preview edits
• Interactive tutorial replaces the old welcome screen

The app can now tell you when a new version is available.

• Auto-checks for updates on launch (once per day, fails silently offline)
• "Check for Updates…" menu item for manual checks
• Automated release pipeline — build, sign, notarize, package DMG, and generate version manifest in one command

The first public release. Getting a macOS app from "works on my machine" to "works on anyone's machine" turned out to be its own project.

• Website launch and notarized DMG distribution
• Quick Look extension for previewing .md files in Finder
• Table rendering and clickable task-list checkboxes
• Bundled highlight.js locally for fully offline syntax highlighting

The release where MarkeMark went from a working prototype to something you'd want to use daily.

• Full GFM rendering: tables, task lists, nested lists, footnotes, highlights, auto-links
• Syntax highlighting with highlight.js (auto-detects language)
• Find bar (Cmd+F) with real-time match counting, next/previous, case sensitivity
• Export as HTML — self-contained file with all CSS and JavaScript inlined
• Undo/redo from either pane

Focused on making the editor feel responsive rather than adding new features.

• 250 ms debounced editor-to-preview sync — no more per-keystroke re-renders
• Incremental DOM updates that preserve scroll position instead of reloading the whole page
• View mode switching: Cmd+1 (preview only), Cmd+2 (editor only), Cmd+3 (split)
• PDF export
• Modern paste handler using the Selection API

The starting point. One question: what if you could edit either side of a markdown editor?

• Split-pane layout with resizable divider
• Bidirectional editing — write markdown on the left, or edit the rendered preview on the right, and changes sync both ways
• Custom markdown renderer and HTML-to-markdown converter
• Dark mode in both panes
• Open and save .md, .markdown, and .txt files