Mermaid preview, exported locally
Render Mermaid fences directly in Markdown Preview, then use Copy Image or Save PNG without leaving OnEdit.
New in 2.1
OnEdit
Native macOS editing with local Mermaid preview, SQL-aware file handling, and cleaner multi-window behavior in version 2.1.
Try OnEdit
Mermaid preview with image export
SQL highlighting and file associations
One-time purchase available
Now featuring OnEdit 2.0 updates
Version 2.1 highlights
Sharper previews, better file handling, and less window clutter.
SQL files feel native
Version 2.1 adds SQL syntax highlighting and file associations so .sql files open with the right treatment immediately.
Smarter multi-window routing
External opens now prefer the active window when possible, reducing duplicate windows during real macOS workflows.
Render Mermaid in Markdown, then export it.
OnEdit 2.1 turns Mermaid fences into local diagrams inside Preview. Copy Image or Save PNG directly from the preview card, while fenced code blocks render more faithfully across the rest of the document.
Local Mermaid runtime, no cloud renderer required
Copy Image and Save PNG built into Preview
SQL aware and multi-window friendly.
Version 2.1 adds SQL syntax highlighting and file associations, so database files open in the right mode immediately. External opens also prefer the active window when possible, which keeps multi-window setups tighter and easier to manage.
Local-first behavior that stays out of your way.
OnEdit 2.1 keeps editing, preview, and file-open behavior consistent while staying focused on local workflows. The result is a macOS editor that feels predictable across windows, opens the right files in the right context, and keeps your work on-device.
Local editing and preview workflows
Privacy-first macOS experience
