What is REDLINE?
A sharp, zero-radius, red-accented Markdown editor that feels like a real code editor (VS Code inspired) while staying 100% portable. No install, no accounts — just open index.html.
Quick Start
- Start typing immediately (local notes auto-saved in browser).
- Click Open Folder in the Explorer (top of sidebar) to work with real .md files on disk (Chrome/Edge recommended — uses File System Access API).
- Use the + in the tab bar or ⌘N for a new note/tab.
- Images you drop/paste in a workspace are saved as real files next to your .md (clean source, no base64 bloat).
Core Experience
Plain-text source editor (no syntax colors — raw and distraction-free) + live GitHub-flavored preview. Tabs, Open Editors list at top of Explorer (VS Code style), collapsible sections, resizable sidebar, focus/fullscreen mode, powerful search (⌘⇧F), slash commands (/), undo/redo snapshots, tags with frontmatter sync, export, and context menus.
Keyboard Shortcuts
New note / tab⌘N
Command palette⌘K
Search (workspace)⌘⇧F
Undo / Redo⌘Z / ⌘⇧Z
Close tab⌘W
Save⌘S (auto)
Bold / Italic / Code⌘B / ⌘I / ⌘E
Find & Replace⌘F
Focus / Fullscreen⌘⇧F
Slash commandsType / in editor
Images & Source
Workspace: images save as real assets/xxx.png files next to your .md (clean, portable). Legacy local notes collapse huge base64 to tokens (use RAW button only if you must). Source editor is deliberately plain raw text (no syntax colors) — exactly like a normal text editor. Preview renders full GFM + callouts + clickable tasks.
Tips: Explorer is primary (Open Editors at the very top). Right-click tabs/tree for context menus. Prefer Open Folder for real work. ⌘K command palette has many actions. Double-click section headers to collapse groups. All output is standard Markdown.