Release notes

March 2, 2026 · dgmo 0.4.0

• New Inline editor diagnostics — error messages appear below the offending line with red/amber gutter dots
• New Canvas dims on parse error — last good render stays visible at reduced opacity instead of disappearing
• New 'New DGMO File' category in the new file dialog for quick blank file creation
• Improved Sequence arrow syntax v2 — labeled arrows replace colon syntax across all docs and examples
• Improved Performance hardening — deduplicated preview components, reduced memory leaks, improved store resilience
• Fix ImageBitmap memory leaks in export pipeline
• Fix Export error handling and label sizing edge cases

March 1, 2026 · dgmo 0.3.2

• New Resilience hardening — atomic file writes, automatic backups, dirty indicator, window state persistence
• New C4 diagram documentation (beta)
• New Responsive stagger for category axis labels on narrow charts
• Improved Branding included on all file exports
• Improved Chart title included in ECharts exports (copy and file)
• Improved In-app docs refreshed with improved DSL syntax and new examples
• Improved Class diagram docs updated for inline extends/implements and UML 3-compartment layout
• Improved Store tests added for editorStore, preferencesStore, exportStore
• Fix ECharts export producing invalid SVG errors
• Fix Docs window rendering as blank white screen
• Fix First-line indent in docs code blocks
• Fix Misleading resize cursor between editor and preview panels removed

February 27, 2026 · dgmo 0.2.26

• Fix Share URLs encode payload in both query param and hash fragment — survives iOS share sheet, AirDrop, and Handoff
• New CamelCase-aware text fitting — labels like "NavigationService" wrap as "Navigation Service" instead of breaking mid-word
• New Participant names ending in "Staff" (e.g. SupportStaff) inferred as actor stick figures
• Improved Font size reduced before hard-breaking long label segments
• Fix WebKit-compatible camelCase splitting — fixes Tauri webview crash from regex lookbehinds

February 27, 2026 · dgmo 0.2.25

• Fix Share URLs use query parameters instead of hash fragments — fixes iOS share sheet stripping the diagram payload
• Improved Old bookmarked URLs with hash fragments still work (backwards compatible)

February 27, 2026 · dgmo 0.2.24

• New C4 fullstack multi-file example demonstrating drill-down from C4 to class diagram via import
• New C4 Architecture thumbnail and showcase entry in new file dialog
• Improved Auto-updater latest.json served from diagrammo.app instead of GitHub releases
• Improved Font shrink preferred over hard-break for long camelCase label segments

February 27, 2026 · dgmo 0.2.23

• New C4 architecture diagrams — context, container, component, and deployment views with full parser and renderer
• New C4 drill-down navigation — click to navigate between architecture levels with breadcrumb trail
• New Initiative-status diagrams — track project progress with containment groups and shape inference
• New Kanban board diagrams with card layout and status columns
• New Legend hover dimming for kanban and org chart diagrams
• Improved Editor pane auto-fits width to content
• Improved Unified palette pickers across diagram types
• Improved Hide-title setting for cleaner diagram presentation
• Improved camelCase-aware text fitting in diagram labels
• Improved C4 edge label placement and import path resolution
• Fix Crash loop on corrupt files resolved
• Fix Drill preview opacity and breadcrumb navigation fixes

February 25, 2026 · dgmo 0.2.22

• New Tag-group-only .dgmo files render as a visual tag legend with aliases and default markers
• New Line numbers displayed in the editor gutter
• Improved Funnel chart tooltip cleaned up — first stage hidden, drop-off percentages only
• Improved Org chart legend pills now show alias and (default) markers when expanded
• Improved Code fence block backgrounds in markdown editor
• Improved Increased kanban legend pill contrast

February 24, 2026 · dgmo 0.2.20

• New Inline editor diagnostics — red gutter markers and underlines for syntax errors with hover tooltips
• New Org chart file imports — import: directive grafts external .dgmo files with tag group merging
• New Open Source Licenses dialog accessible from Settings
• New Org fleet example gallery with multi-file import demo
• Improved Parsers continue past errors — multiple diagnostics collected and displayed simultaneously
• Improved "Did you mean?" suggestions for misspelled chart types
• Improved CLI prints structured error messages with line numbers
• Improved Export theme now defaults to match the app's current light/dark setting
• Improved Shareable link automatically opens in browser after copying
• Fix Highlight not re-applying when clicking the same diagram element twice
• Fix App now auto-restarts correctly after installing an update

February 23, 2026 · dgmo 0.2.19

• New Share diagrams via URL — export to a shareable link with the diagram encoded in the URL
• New QR code modal for easy mobile sharing of diagram URLs
• New Copy-link keyboard shortcut for quick sharing
• New ER diagram thumbnail in the new file dialog
• Improved Toast notifications now support action buttons
• Improved Share action added to the app rail

February 23, 2026 · dgmo 0.2.17

• New Entity relationship diagrams — tables, columns, constraints, crow's foot notation, all relationship syntax forms
• New Class diagrams — classes, properties, methods, inheritance, associations, click-to-navigate
• New Render .dgmo code fences as live diagrams in Markdown preview
• New Deep link support — diagrammo://open?dgmo= for DSL content
• New In-app documentation for class diagram and entity relationship syntax
• Improved New file dialog reorganized into data, business, and software categories
• Improved Templates sorted alphabetically within categories

February 22, 2026 · dgmo 0.2.15

• New Curated examples library — browse and open ready-made diagrams from the welcome screen
• New Org chart legend click navigates editor to the tag group definition
• Improved Update dialog now links to the website release notes instead of inline markdown
• Improved Venn diagram overhaul — transparent circles, scaled labels, better layout
• Improved Flowchart title standardized to match other chart types
• Improved Slope chart tooltip simplified to show only change values
• Fix File tree click not selecting new file after editor focus
• Fix Collapsed org chart nodes not expanding on click
• Fix Sequence diagram notes now position below the forward call arrow

February 21, 2026 · dgmo 0.2.14

• New Org chart diagrams with tree layout, containers, tag groups, and clickable legend
• New Org chart collapse/expand with click-to-focus-then-toggle and descendant counts
• New Participant spotlight — click a participant to highlight all its messages
• New Palette color autocomplete in the editor
• New Code folding and indent guides for .dgmo files
• New Cmd-click to open URLs in editor comments
• New Manual Check for Updates button in Settings
• New In-app documentation for flowchart and org chart types
• Improved Expanded participant type inference from 125 to 222 rules
• Improved Rewritten sequence diagram example to showcase participant inference
• Improved Alphabetized chart types in new file dialog
• Improved Standardized collapse/expand indicators on Lucide chevrons
• Fix Section collapse immediately re-expanding when cursor is on a message
• Fix Chart deselect, cursor styling, and arc connected-node highlight
• Fix Parse errors suppressed while cursor is on the offending line
• Fix Duplicate segment colors in pie, doughnut, and polar-area charts
• Fix Note boxes overlapping subsequent message labels

February 20, 2026 · dgmo 0.2.13

• Fix Section divider highlight now visually distinct
• Fix Note overlap on message labels
• Fix Benign ResizeObserver loop warning no longer triggers error toasts

February 19, 2026 · dgmo 0.2.12

• New Collapsed notes for sequence diagrams with cursor-driven expansion
• New Bidirectional cursor-highlight for all chart types
• New Flowchart template in the new file dialog and welcome gallery
• New Help comment with docs link in all new file templates
• Fix Sequence highlight no longer vanishes when note expansion triggers a re-render
• Fix No more white flash on app startup — window stays hidden until the UI is ready
• Fix Note spacing and block frame overlap fixed in sequence diagrams
• Fix Updater restart now works correctly
• Fix Hidden directories and node_modules excluded from the file tree
• Fix Quadrant labels auto-scale to fit within bounds

February 18, 2026 · dgmo 0.2.9

• New Flowchart cursor sync and click-to-navigate interactivity
• New Clickable and highlightable titles for all chart types
• New Note highlighting when cursor is on any line in a note range
• New SVG markdown links open in the system browser
• Improved Unified highlight colors into shared CSS custom properties
• Improved Default empty file extension changed from .mmd to .dgmo
• Improved Auto-restore session on unclean shutdown instead of prompting
• Fix Chart removeChild crash on auto-focus
• Fix Flowchart dimming uses node IDs instead of line numbers
• Fix Highlight now appears after SVG render
• Fix Chart background standardized to palette across all previews

February 18, 2026 · dgmo 0.2.8

• New Note highlighting — notes highlight when the cursor is on any line in the note
• New Multi-line note support with bullet lists and underscore markdown
• Fix Typing incomplete note keyword no longer blanks out the diagram
• Fix Notes render below the message arrow with dedicated vertical space

February 15, 2026

• Fix Fix crash on relaunch after update

February 15, 2026

• New Note syntax for sequence diagrams (single-line and multi-line)
• New else if support for sequence diagram conditional blocks
• Improved Parser tolerance for whitespace, colon splitting, multi-word groups
• Improved Parser validation for headers-before-content and duplicate groups
• Improved Syntax cleanup — removed deprecated keywords and patterns
• Fix Update check no longer races with event listener setup

February 15, 2026

• New Sequence diagrams with collapsible sections, participant aliases, activations, and loops
• New Mermaid diagrams — flowcharts, sequence, class, state, ER, Gantt, and more
• New Nomnoml UML class and object diagrams
• New 26 chart types — bar, line, area, scatter, slope, radar, word cloud, arc, venn, sankey, heatmap, and more
• New Markdown rendering with KaTeX math and syntax highlighting
• New 8 color palettes with light, dark, and system themes
• New CodeMirror 6 editor with optional Vim mode and code completion
• New Export to PNG and PDF, copy diagram to clipboard
• New Click-to-navigate between editor and diagram preview
• New File tree browser with folder drag-and-drop
• New Auto-recovery from crashes