Mark O Down

A minimal WYSIWYG Markdown editor for Windows, macOS and Linux – edit .md files visually, save them byte-for-byte.

Version 0.7.2 · Download · What's new · Changelog

Mark O Down is not a Markdown editor with a preview pane – the document is the preview. You edit headings, bold text, lists, links, images, tables and badges directly, and the file on disk stays clean Markdown.

What's new in 0.7.0

• 🍎 New in 0.7.2: better on the Mac – a real menu bar with all shortcuts (⇧⌘B, ⇧⌘M …), and older Macs (macOS 12 / older Safari) no longer show an empty window.
• 📚 New in 0.7.1: Save workspace as PDF – all documents of a workspace in one PDF, links jump to the right page. Plus: F5 / F6 no longer reload or crash the window.
• 🗂️ Workspaces and a folder tree – a .modw file for a folder of documents, the tree beside the editor (left or right, search, paste a path), favourites in Open workspace ….
• 📑 Tabs – every document in its own tab with its own undo history; the session keeps them all.
• 🔗 Linked documents – [[wiki links]] like Obsidian (found by name in the workspace), Ctrl+click follows any link, Alt+← goes back; drag a file from the tree into the text → a link.
• 📖 [[toc]] – a table of contents of the whole workspace (or the document), also in HTML and PDF.
• ✏️ Split editor – the Markdown source beside the document can be edited, with an HTML check.
• 📄 Save as PDF and spell checking with the system's own checker.
• New in 0.6.0: Mermaid diagrams and the extended syntax – see the changelog.

Features

• True WYSIWYG for CommonMark + GitHub Flavored Markdown: headings, bold/italic/strikethrough, inline code, code blocks, bullet/numbered/task lists, quotes, links, images, horizontal rules, tables, footnotes – plus superscript, subscript and highlight as the HTML tags GitHub renders (<sup>, <sub>, <mark>).
• Folder tree (Ctrl+Shift+B) beside the editor – on the left or right, width by dragging its edge, can be hidden; the last folder is remembered. The field on top finds files and folders below the current folder by part of their name (liz → Lizenz.md, Blizzard.md); a pasted path (file or folder, also with quotes from Copy as path) goes straight there. Arrow keys, Enter, type the first letters to jump, double-click a folder to show only it, Backspace / ↑ for the parent folder, a small drive selector on Windows. Drag a file from the tree into the document to link it where you drop it: [[kapitel1]], [[teil 2/Kapitel 2]] (relative to the document) – or [Kapitel 2](teil%202/Kapitel%202.md) without wiki links.
• Workspaces (.modw) for a folder of Markdown documents: Open → New workspace … saves <Name>.modw in the folder (JSON: version, name, root – the documents' folder relative to the file, ../ allowed – and wikiLinks). Opening one (also by double-click in Explorer) shows its folder in the tree and finds [[Link]] by name anywhere in it, like Obsidian. Open → Open workspace … lists every workspace Mark O Down has seen, favourites on top, each list sortable by name or last opened. The last workspace is opened again at start.
• Table of contents [[toc]] (or [[toc depth=2]]) on a line of its own: in a workspace it lists all its documents folder by folder with their headings, otherwise the document's own headings. Generated, never saved (only the marker is); in the HTML / PDF export and print too.
• Mermaid diagrams like on GitHub: ```mermaid blocks are drawn (flowcharts, sequence, class, state, Gantt, pie … diagrams); click a diagram to edit its source below it. Also in the HTML export and print. Mermaid is loaded only when a document has a diagram.
• Extended syntax (Pandoc / Typora / Obsidian, switchable under Help, on by default): ^superscript^, ~subscript~, ==highlight== and definition lists (Term / : Definition). Wiki links like Obsidian: [[Link]], [[Link|Text]], [[Link#Heading]], [[#Heading]], [[sub/Link]], [[../sub/Link]] (.md may be left out). GitHub shows these as plain text; switched off, Mark O Down reads Markdown exactly like GitHub (then ~text~ is strikethrough).
• Math like on GitHub: $E=mc^2$ inline, $$ … $$ and ```math blocks, shown as formulas (LaTeX via Temml, rendered as MathML – no math fonts to ship). Prices stay text: from $5 to $10 is not a formula (Pandoc's rule). Loaded only when a document has math.
• Syntax highlighting in fenced code blocks (```js, ```rust …, ~40 languages), in GitHub's colours – also in the HTML export and when printing. Loaded only when a document has code.
• Lossless round-trip – open → save without edits is byte-identical. When you edit, only the changed blocks are rewritten, in their original style (* vs - bullets, __bold__ vs **bold**, ~~~ vs ``` fences, compact |---| vs aligned tables …). BOM and CRLF/LF line endings are kept.
• Everything else is preserved – other HTML, front matter and constructs the editor doesn't edit visually are kept verbatim and shown as editable raw blocks.
• README-friendly HTML – <div align="center">, <br> and <img width="…"> / <a><img></a> logos are rendered and editable.
• Badge & icon picker – shields.io, badgen.net, forthebadge.com, all Simple Icons, your own images. Sources and templates are configurable (badges.json), icon lists are cached for offline use.
• Emoji & symbol picker – every Unicode emoji and ~9,700 symbols with names and keywords in English plus the UI language. Search matches inside words (ross → 😵 face with crossed-out eyes). Skin tones, recently used, full 4-byte Unicode support.
• Images like on GitHub – relative paths resolve from the document's folder, /path from the repository root. Drag & drop images and .md files into the window.
• Spell checking in the language of the text (chosen separately from the interface language), using the system's dictionaries.
• Find & replace with match case, whole word and regular expressions ($1 groups).
• Safe – changes by other programs are detected (reload or ask, never overwritten silently), unsaved work is recovered after a crash, recently opened files in the Open menu.
• Tabs – every document in its own tab, each with its own undo history and position; drag to reorder, middle-click or × to close, right-click for Close others / to the right / all, Copy path, Show in file tree. A file that is open already just comes to the front.
• Sessions like Notepad++ – closing the app keeps all tabs as they are, unsaved changes included, and the next start continues with them. The files are only changed when you save.
• Open HTML – converted to Markdown; a dialog lists exactly what Markdown can't keep.
• Export – standalone HTML file, PDF, HTML to the clipboard, print. Document zoom 50–300 %.
• Paste images and links – Ctrl+V of a screenshot saves it next to the document (images/) and inserts it; a pasted URL becomes a link, an image URL an image.
• Five languages – German, English, French, Spanish and Italian; follows the system language, switchable any time under Help → Language.
• Markdown shortcuts while typing (# , - , 1. , > , **bold**, [text](url) …).

Download

Get the right file from the latest release:

System	File
Windows 10/11, 64-bit	Mark.O.Down_<version>_x64-setup.exe
macOS 10.15+ (Apple Silicon and Intel)	Mark.O.Down_<version>_universal.dmg
Linux, 64-bit – any distribution	Mark.O.Down_<version>_amd64.AppImage
Debian, Ubuntu, Mint …	Mark.O.Down_<version>_amd64.deb
Fedora, openSUSE …	Mark.O.Down-<version>-1.x86_64.rpm

The apps are not code-signed yet:

• Windows: "Windows protected your PC" → click More info → Run anyway. The installer asks whether to install for you only (the default, no administrator rights) or for all users (C:\Program Files; unattended: /S /ALLUSERS), and which file types (.md, .markdown, .mdown, .mkd, .mkdn, .mdwn) Mark O Down should open – all, none or single ones. The app needs Microsoft Edge WebView2, which is part of Windows 10/11 (the installer fetches it if missing).
• macOS: the first time, right-click the app → Open (or System Settings → Privacy & Security → Open Anyway). If macOS says the app "is damaged", run xattr -dr com.apple.quarantine "/Applications/Mark O Down.app" in Terminal.
• Linux: make the AppImage executable (chmod +x Mark.O.Down_*.AppImage) and start it, or install the .deb / .rpm, which also registers Mark O Down for .md files.

Drag & drop not working on Windows? Windows blocks drag & drop from Explorer into programs running as administrator. Start Mark O Down normally – the status bar warns you if it runs elevated.

Keyboard shortcuts

On macOS use ⌘ Cmd instead of Ctrl and ⌥ Option instead of Alt – the tooltips show the right keys for your system.

Action	Keys
Open / Save / Save as	Ctrl+O / Ctrl+S / Ctrl+Shift+S
New tab / Close tab / Print	Ctrl+N or Ctrl+T / Ctrl+W / Ctrl+P
Next / previous tab / reopen closed tab	Ctrl+Tab or Ctrl+PgDn / Ctrl+Shift+Tab or Ctrl+PgUp / Ctrl+Shift+T
Folder tree on / off	Ctrl+Shift+B
Find / Find & replace / next / previous	Ctrl+F / Ctrl+H / F3 / Shift+F3
Zoom in / out / reset	Ctrl+Mouse wheel, Ctrl+Plus / Ctrl+Minus / Ctrl+0
Export HTML	Ctrl+Shift+E
Bold / Italic / Strikethrough / Code	Ctrl+B / Ctrl+I / Ctrl+Shift+X / Ctrl+E
Link	Ctrl+K
Emoji & symbols	Ctrl+.
Follow a link / back / forward	Ctrl+click / Alt+← / Alt+→
Footnote	Ctrl+Alt+F (double-click a footnote number: go to the note)
Formula block	type $$ + space in an empty line
Headings / Paragraph	Ctrl+Alt+1…3 / Ctrl+Alt+0
Bullet / numbered list / quote	Ctrl+Shift+8 / Ctrl+Shift+7 / Ctrl+Shift+9
Indent / outdent list item, next table cell	Tab / Shift+Tab
Line break	Shift+Enter
Show exported Markdown	Ctrl+Shift+M
Quit (macOS, asks about unsaved changes)	⌘Q
Help	F1

Building from source

Requirements: Rust, Node.js 22+, and the Tauri prerequisites for your system (on Linux: libwebkit2gtk-4.1-dev, librsvg2-dev, patchelf …).

npm install
npm run tauri dev      # run in development mode
npm run tauri build    # release build + installer/packages in src-tauri/target/release/bundle/
npm test               # round-trip, editor and search tests
npm run unicode        # refresh the emoji/symbol data from unicode.org and CLDR

Releasing

Releases are built by GitHub Actions (release.yml) when a version tag is pushed:

npm run release:version 0.3.0   # sets the version in package.json, Cargo.toml, tauri.conf.json …
# add a "### 0.3.0 – <date>" section to the changelog in this README
git commit -am "Release v0.3.0"
git tag v0.3.0
git push origin main v0.3.0

The workflow checks that the tag matches the version, runs the tests, creates a draft release and builds the Windows installer, the macOS app and the Linux packages into it. The release notes are taken from the matching section of the changelog below – review the draft on GitHub and click Publish. Tags with a suffix (v0.2.0-beta.1) become pre-releases. Every push and pull request runs the test suite on Windows, macOS and Linux (ci.yml).

How it works

.md text ──micromark──▶ mdast (syntax tree) ──▶ ProseMirror document  (editing)
.md text ◀─to-markdown── mdast ◀──────────────── ProseMirror document  (saving)

• Parsing/serializing: remark (micromark, mdast, GFM) – 100 % CommonMark compliant.
• Editor: ProseMirror with a schema that contains exactly the Markdown constructs, plus prosemirror-tables; code colouring by highlight.js (BSD-3-Clause) and formulas by Temml (MIT), both loaded on demand.
• Round-trip: every top-level block (and every item of a top-level list) remembers its original source and its canonical serialization at load time. On save, an unchanged block is written back from the original bytes; only edited blocks are re-serialized.
• Desktop shell: Tauri 2 (Rust) – file I/O with strict UTF-8, BOM and line ending handling, atomic saves, config and download cache.

The test suite round-trips its fixtures and all README files in node_modules byte-for-byte and checks that full re-serialization renders identical HTML.

Changelog

0.7.2 – 2026-10-19

Fixed

• macOS 12 and older Safari: empty window – the web engine of older Macs (Monterey even with "Safari 16.5") could not read the app's script (regular expressions with lookbehind, newer class syntax), so the window stayed empty. The build now targets Safari 15 and the code avoids lookbehind; checked on a Mac mini with macOS 12.6.

• An error at start is shown instead of an empty window (and written to the log), so a problem like this can be reported.

• macOS: keyboard shortcuts – on the Mac a shortcut reliably reaches the app only as part of the menu bar, so ⇧⌘B (folder tree) and others did nothing. The menu bar now has File, Edit and View menus with all shortcuts: new tab, open, save, save as, export, close / reopen tab, print, find (⌘F), find and replace (⌥⌘F – ⌘H hides the app on a Mac), find next / previous (⌘G / ⇧⌘G), folder tree (⇧⌘B), Markdown source (⇧⌘M), next / previous tab (⌃⇥ / ⌃⇧⇥) and zoom. Ctrl+letter shortcuts also work when the system reports a control character instead of the letter.

Changed

• Tauri 2.12.4 (latest stable) and updated dependencies.

0.7.1 – 2026-10-13

New

• Save workspace as PDF… (in the Save menu, with a workspace open): all its documents in one PDF – the current one first (e.g. the story with its [[toc]]), then the others in the order of the table of contents, each on a new page. Links between the documents, [[wiki links]] and the entries of the table of contents jump to the right page inside the PDF; images come from each document's own folder. On macOS and Linux it goes through the print dialog.

Fixed

• F5 / Ctrl+R no longer reload the window (all tabs and unsaved changes in memory were gone), and F6 no longer kills the built-in web engine (the window stayed empty and could only be ended in Task Manager). The browser's own keys and its right-click menu (Back, Reload …) are off; F5 still refreshes the folder tree.
• Safety net: should the web engine crash anyway, the view reloads and all tabs come back with their unsaved changes; if the whole engine is gone, Mark O Down restarts and offers them. The recovery copy now holds all open tabs, and restoring it brings them all back.

0.7.0 – 2026-10-13

New

• Split editor: the Markdown source next to the visual editor (Ctrl+Shift+M) can now be edited too. Whichever side you type in leads: while source changes are not applied yet the visual editor is dimmed, after a short pause – or as soon as you click elsewhere – they are applied (only the blocks that changed). Ctrl+Z works per side.
• Following links (Ctrl+click): [Text](#heading) jumps to the heading (anchors as on GitHub, also in the HTML export), [Text](other.md#heading) opens the file in Mark O Down and jumps there, /… paths start at the repository root; Alt+← / Alt+→ (or the mouse's side buttons) go back and forth. Web links open in the browser; other local files are only shown in Explorer – a link never starts a program.
• Spell checking with the operating system's own checker (Windows spell checker, macOS spelling, Hunspell dictionaries on Linux): misspelled words are underlined in red; right-click for suggestions, Add to dictionary and Ignore. The language of the texts is chosen under Help independently of the interface language (e.g. German menus, English README) and saved; so is switching it off. Code, formulas, diagrams, raw HTML, links, paths, file names, CamelCase and ALLCAPS words are not checked. Languages are those installed in the system – on Linux e.g. the package hunspell-de-de.
• Save as PDF… (in the Save menu): the page of the HTML export – code colours, formulas, diagrams, images – as an A4 PDF with real, selectable text and working links. On Windows it is created directly by the built-in web engine (no print dialog); on macOS and Linux the print dialog opens, which saves PDFs too.
• HTML check under the source: tags that are not closed, closing tags without an opening one and comments without --> (which would hide the rest of the document) are listed with their line – click to jump there, Close / Remove fixes it (undoable with Ctrl+Z).
• Table of contents [[toc]] / [[toc depth=N]] (extended syntax or wiki links), alone on a line: in a workspace all its documents (except the one it is in) like the folder tree – in each folder README/index first, then the documents in natural order, then the subfolders – each with its first # heading as title and its headings below it down to level N (default 3); without a workspace the document's own headings. Only the marker is saved; the table is drawn in the editor (a click on an entry goes there, double-click changes the depth), kept up to date while you type (open tabs count with their unsaved text) and rendered into the HTML export, the PDF and the printout with links relative to the document.
• Tabs: every opened document gets its own tab (a new, untouched empty tab is used for the next file instead). Each tab keeps its undo history, cursor and scroll position; opening a file that is open already brings its tab to the front, and so does following a link to it. Two tabs with the same name show their folder. Ctrl+N / Ctrl+T new tab, Ctrl+W close (asks about unsaved changes), Ctrl+Tab / Ctrl+Shift+Tab (or Ctrl+PgDn / Ctrl+PgUp) switch, Ctrl+Shift+T reopens the tab closed last; middle-click closes, drag reorders, right-click: close others / to the right / all, copy path, show in Explorer or the file tree. Several files dropped from Explorer open in tabs. The session keeps all tabs (unsaved changes included, the one in front stays in front); crash recovery covers all tabs too, and recovery copies of earlier versions are still read.
• Drag a file from the folder tree into the document: a link to it is inserted where it is dropped (a line shows where) – [[kapitel1]], [[teil 2/Kapitel 2]] relative to the document, or a normal Markdown link [Kapitel 2](teil%202/Kapitel%202.md) without wiki links. A space is added where the link would stick to a word. The file is neither opened nor copied in.
• Workspaces (.modw): a file in the documents' folder with its name, the documents' folder (root, relative – ../docs works too), whether [[wiki links]] are used (independent of the extended syntax) and a version. Open → New workspace … (or New workspace here … in the folder tree) creates one, Open workspace … shows all workspaces ever opened – favourites on top (Link / ✕), both lists sortable by name or date (click again: reversed), missing files marked and removable. In a workspace [[Link]] is also found by name in any subfolder (the nearest wins), the window title and the tree show its name, Workspace settings … changes it. The installer can associate .modw with Mark O Down.
• Folder tree (Ctrl+Shift+B): folders and Markdown files beside the editor, left or right, resizable, can be hidden – the last folder is remembered. Search by part of a name (only in the current folder and below, not the whole disk), paste a path to go there, keyboard navigation with type-ahead, double-click a folder to make it the top, drive selector on Windows. Files that appear or disappear outside are picked up when the window is activated.
• Wiki links (extended syntax): [[Link]], [[Link|Text]], [[Link#Heading]], [[#Heading]] (in this document), [[sub/Link]], [[../sub/Link]] – resolved from the document's folder, .md may be left out. Typing the closing ]] creates the link, double-click edits target and text, Ctrl+click follows it (also Alt+← back). Targets that don't exist are underlined in dashed red. Saved exactly as written; in the HTML export they are normal links.

Fixed

• Missing cursor (reported by a user): in an empty or short document only the first line could be clicked – a click anywhere else on the page (e.g. after maximizing the window) left the editor without a cursor. Now the whole page is editable, a click on its margin puts the cursor at the nearest place, the cursor is in the document right after opening (also by double-click; the window was still hidden when it tried), and the editor keeps the focus when the window is maximized, restored or activated again.
• Numbered lists with gaps (1. 2. 3. 5.): typing a number below the list continues it (it used to start a second list unless the number matched the item count), and a new item gets the number after the one before it.

Installer (Windows)

• "Just for me" is the default for a new installation (no administrator rights, installed to %LOCALAPPDATA%\Programs); for all users (C:\Program Files) is one click away. An update keeps the way it was installed.
• Choose the file types: a new page lists .md, .markdown, .mdown, .mkd, .mkdn and .mdwn – tick all, none or single ones. The choice is remembered for updates; a type you untick later is given back to the program that had it before.
• Safer file associations (also when uninstalling): only what is still Mark O Down's is undone – a type another program (e.g. VS Code) has taken over in the meantime is left alone, and unticking one type no longer affects the others.

0.6.0 – 2026-10-01

New

• Mermaid diagrams: ```mermaid blocks are drawn as diagrams, like on GitHub. Click a diagram to edit its source right below it – the diagram follows while you type; errors are shown under the last good version. Diagram in the toolbar inserts an example; ```mermaid + space starts one. Also in the HTML export and print (as SVG). Mermaid 11 is loaded only when a document has a diagram; the installer grows by about 1 MB.
• Extended syntax (switchable under Help → Extended syntax, on by default): ^superscript^, ~subscript~ (no spaces inside, as in Pandoc), ==highlight== and definition lists (Term followed by : Definition). Typing : at the start of a line below a paragraph makes it a definition list; Enter in a term jumps to its definition, on an empty last line of a definition starts the next term, in an empty term leaves the list. The toolbar buttons for superscript/subscript/highlight write ^x^ / ~x~ / ==x== (with spaces inside: the HTML tag). GitHub does not know this syntax and shows it as text – switched off, Mark O Down reads exactly like GitHub again (~text~ is strikethrough there). Switching re-reads the open document.

Fixed

• When edited blocks were saved again: an HTML link closed with </A> became </a>, <sup>*x*</sup> became *<sup>x</sup>*, and two adjacent links to the same address ([a](x)[b](x)) were merged into one – all now stay as written.

0.5.0 – 2026-09-30

New

• Sessions like Notepad++: closing the app (✕, Alt+F4, ⌘Q) no longer asks to save – the document, unsaved changes included, is kept as a copy in the app data folder and the next start continues with it (still marked unsaved, same cursor and scroll position); a saved file is simply reopened. The file itself is only changed when you save. Closing the document (Ctrl+W) or opening another file still asks. If the app is started with a file, or several windows were closed with unsaved changes, the other unsaved states are offered instead of being lost. Help → Remember session on exit switches it off (then closing asks as before).
• Footnotes ([^1]) are shown and edited like on GitHub: the reference shows the number GitHub would show (by order of first reference, whatever the label), its note as tooltip; double-click jumps to the note. Insert footnote (Ctrl+Alt+F) adds the next number and its note at the end.
• Superscript, subscript and highlight – <sup>, <sub>, <mark> are shown as formatting and have toolbar buttons. They are written as these HTML tags because that is what GitHub renders (2^3^ / H~2~O / ==x== are not GitHub Markdown). Tags with attributes are kept as they are; importing HTML keeps them too.
• Syntax highlighting of fenced code blocks with a language (~40 languages via highlight.js, GitHub colours, light and dark) – in the editor, the HTML export and print. The highlighter is loaded only when needed; the installer grows by about 50 KB.
• Math: $…$ inline and $$…$$ / ```math blocks are shown as formulas (Temml, MathML) – also in the HTML export, Copy HTML and print. Click a formula block to edit its LaTeX below it; double-click an inline formula for a dialog with live preview. Formula in the toolbar: in an empty paragraph a block, with text selected that text as formula, otherwise the dialog; typing $$ + space starts a block. Single $ follow Pandoc's rule, so prices like $5 to $10 stay text, and $ is escaped when saving only where a formula could otherwise form. The formula renderer is loaded only when needed; the installer grows by about 60 KB.
• Third-party licenses under Help → About → Open Source: the licenses of all components the app is built with (npm packages, Rust crates, Unicode data), generated at build time (npm run licenses), loaded only when opened.
• More Markdown file extensions: .mdown, .mkd, .mkdn, .mdwn open directly and are registered by the installers (with .md and .markdown).

0.4.0 – 2026-09-29

New

• macOS and Linux: Mark O Down now runs on macOS 10.15+ (one app for Apple Silicon and Intel, .dmg) and Linux (.AppImage, .deb, .rpm). On macOS the shortcuts use ⌘ and the tooltips show ⇧⌘S style keys, Quit (⌘Q) asks about unsaved changes, and Open with… / double-clicking a .md file opens it – also while the app is already running. The Linux packages register Mark O Down for .md files.
• Center a table on its own: with the cursor anywhere in a table, Center wraps the whole table in <div align="center"> (and removes it again) – no need to select the text around it.

Fixed

• Centered tables are also centered in the exported HTML.
• Raw elements (<kbd>, <sup> …) show their tooltip in the new language right after switching.

0.3.0 – 2026-09-28

New

• Paste images and links (Ctrl+V): a copied image (screenshot, image from a browser …) is saved as an image file in an images folder next to the document and inserted with a relative path – an unsaved document is saved first. A pasted URL turns the selected text into a link (or is inserted as a link), a URL pointing to an image becomes an image.
• User interface in five languages: German, English, French, Spanish and Italian. The language follows Windows and can be changed under Help → Language without restarting. Everything is translated – toolbar, menus, dialogs, find bar, status bar, keyboard shortcut names (Strg/Ctrl/Maj …), the HTML import report, badge templates and file dialogs.
• Emoji search in your language: names and keywords from CLDR for all five languages (English always included), e.g. rire, risa or ridere find 😂.

Changed

• badges.json is only created when you save your own sources; until then the built-in templates follow the UI language. A file that still contains the unchanged defaults of an older version is treated the same way.
• The installer is available in English, German, French, Spanish and Italian.

0.2.0 – 2026-09-28

New

• Find & replace (Ctrl+F / Ctrl+H, F3 / Shift+F3): all matches highlighted with a counter, options match case, whole word (also for umlauts) and regular expression with $1 … in the replacement. Finds text inside formatting, lists, tables and code; Replace keeps the formatting, Replace all is a single undo step.
• Open HTML files (.html / .htm, also by drag & drop): converted to Markdown. Before importing, a dialog lists exactly what gets lost in this file (scripts, stylesheets, style / class attributes, <span>, <u> …). <div align="center">, <br> and <img> with size are kept, iframes become links. The result is a new document – the HTML file is never overwritten, Save proposes <name>.md next to it.
• Recently opened files: the Open button has a menu with the last 10 files; missing files are reported and removed from the list.
• Zoom 50–300 %: Ctrl+Mouse wheel (also touchpad pinch), Ctrl+Plus / Ctrl+Minus / Ctrl+0 and a − 100 % + control in the status bar. Only the document is scaled; the level is remembered.
• Search button in the toolbar.

Data safety

• Changes by other programs are detected (checked before every save and when the window gets focus): an unchanged document reloads silently, an edited one asks Reload / Keep mine. Saving never overwrites such changes without asking (Overwrite / Save as… / Cancel). A deleted file is reported; Save creates it again.
• Crash recovery: while there are unsaved changes, a copy is kept in the app data folder (never in the document itself). After a crash, power loss or forced restart, the next start offers to restore them.
• Text typed while a save is in progress is no longer marked as saved (closing the window would not have asked for it).
• Saving through a symbolic link updates the target and keeps the link.

Fixed

• Dialogs no longer let the keyboard focus escape: with a dialog open, Tab could move into the editor behind it and text went blindly into the document. All dialogs now share one frame with a locked background, consistent Esc, click-outside and focus return.
• Enter in the emoji and About dialogs acted even when another button (e.g. Cancel) was focused.
• The emoji grid was ~1,900 Tab stops; it is now one stop with arrow-key navigation.
• Images whose file names contain #, ? or % were not displayed.
• Downloading the icon list had no timeout and could hang forever when offline.
• At the default window width the toolbar wrapped into two rows.

Security

• Printing renders the document in a sandbox: scripts inside an untrusted .md file can't run.

Performance

• Saving after an edit only serializes the changed blocks: 262 ms → 2 ms for a 1 MB document; list items no longer rebuild the whole list.

0.1.0 – 2026-09-28

First release.

• WYSIWYG editing of CommonMark + GitHub Flavored Markdown with lossless, byte-identical round-trip (BOM and CRLF/LF preserved, unchanged blocks written back from the original bytes).
• README-friendly HTML: <div align="center">, <br>, <img width> and <a><img></a>.
• Tables with toolbar (rows, columns, alignment), task lists, code blocks, raw HTML blocks.
• Badge & icon picker (shields.io, badgen.net, forthebadge.com, Simple Icons, own images) with configurable sources and offline cache.
• Emoji & symbol picker (Unicode 18, CLDR 48) with English and German search.
• Images like on GitHub (relative paths, /path from the repository root), drag & drop.
• HTML export, copy HTML, print, close document, Help and About.
• Windows installer (NSIS), .md file association.

License

MIT © 2026 Alexander Predl · Impressum