Downer features
Every Downer feature in one place. A fast Markdown reader and editor for the Mac, free for Apple silicon Macs.
Speed
Downer is built to open documents almost instantly, scroll without a stutter and stay light on memory, even with a very long file. Here are the measurements.
Read moreMermaid diagrams
Open a Markdown file full of Mermaid blocks, or a .mmd file on its own, and Downer draws each diagram right in the page. No browser, no plugins, no waiting.
Read moreMath
Write equations between dollar signs the way GitHub does, and Downer sets them as real mathematics. Fractions, sums, matrices and aligned steps, right in the page.
Read moreLaTeX papers
Open a .tex file and Downer shows it as a readable page, with sections, figures, theorems, citations and every equation. No TeX installation and no waiting for a PDF.
Read moreGitHub-style Markdown
Downer follows the same Markdown rules as GitHub, so a README on your Mac looks the way it will on the web. Check tables, images and collapsible sections before you push.
Read moreEditor
Downer opens files for reading. Press edit and the source slides in beside the live preview, scrolled to the same place, with a formatting bar and the shortcuts you expect.
Read moreQuick Look
Select a Markdown file in Finder, press Space and read it as a formatted page. Downer adds Quick Look previews for Markdown, Mermaid diagrams and LaTeX papers.
Read moreThemes and fonts
Every theme comes in light and dark, and Downer can switch with your Mac. Pick separate fonts for the page, for code and for the app itself.
Read moreTry Downer on your Mac
Free for Apple silicon Macs running macOS 14 or later.