Markdown preview that feels native to Mac.
PeekMark is a local-first Markdown previewer with Quick Look, app windows, Mermaid diagrams, Math/LaTeX, wikilinks, and a zero-remote rendering contract.
Local notes, rendered cleanly.
Open Markdown from Finder, preview it with Space, follow local anchors and wikilinks, and keep every render request on your Mac.
Idea --> Draft
Draft --> Preview
Preview --> Ship
Community rendering is not the upsell.
Quick Look
Render `.md` files from Finder without opening a full editor.
Rich Markdown
GFM, syntax highlighting, frontmatter chips, TOC, anchors, wikilinks, Mermaid, and Math/LaTeX.
Offline first
Bundled preview assets and strict local navigation keep your notes private by default.
Community
Free and open source under AGPL-3.0.
- Quick Look Markdown preview
- App preview and editing surface
- Mermaid and Math/LaTeX rendering
- Local anchors and wikilinks
Pro
Paid workflow extensions planned after the public baseline is stable.
- Workspace and vault navigation
- Backlinks, graph view, and advanced search
- PDF/DOCX/HTML export
- Custom themes and capture workflows
Download the notarized Mac app.
PeekMark 1.0.0 is distributed as a Developer ID signed and Apple-notarized DMG. Download it, open the disk image, and drag PeekMark to Applications.
Open core, with the useful preview baseline included.
| Capability | Community | Pro |
|---|---|---|
| License | AGPL-3.0 source code and free signed binary | Proprietary extensions planned for future official builds |
| Markdown preview | Quick Look, app preview, GFM, syntax highlighting | Uses the same shared renderer |
| Rich rendering | Frontmatter, TOC, anchors, wikilinks, Mermaid, Math/LaTeX | Not gated behind Pro |
| Workspaces | Open individual Markdown files | Vault navigation, backlinks, graph view, advanced search |
| Output | Native preview surfaces | PDF, DOCX, HTML export and custom themes |
Privacy promise for Markdown files.
No content upload
PeekMark is designed so Markdown rendering happens locally on your Mac, not on a hosted rendering service.
No remote renderer
Preview assets are bundled with the app so Mermaid, Math/LaTeX, highlighting, and styles do not require CDN calls.
Clear release status
The Community source, signed DMG, and Sparkle appcast are public. Pro workflow features remain planned and are not part of the Community baseline.
PeekMark Community is public.
Version 1.0.0 is signed, notarized, and available now. Pro features are still in research and will not gate the core Markdown preview experience.