Features

Everything you need for a premium Markdown reading experience, nothing you don't.

Reading Experience

GitHub-Style Rendering

Faithful reproduction of GitHub's Markdown rendering, so your documents look exactly as they would on GitHub.

Extended Syntax Support

Tables, task lists, strikethrough, autolinks, and all the GitHub Flavored Markdown extensions you rely on.

GitHub Alerts

Support for NOTE, TIP, IMPORTANT, WARNING, and CAUTION callouts with appropriate styling.

YAML Frontmatter

Beautifully styled, collapsible frontmatter tables that display your document metadata elegantly.

Auto-Reload

Documents automatically refresh when files change on disk, keeping your view up-to-date.

GitHub-Style Rendering

GitHub Alerts

Code & Diagrams

Syntax Highlighting

Beautiful code highlighting powered by highlight.js with a convenient copy button on every code block.

Mermaid Diagrams

Interactive Mermaid diagrams with zoom, pan, and the ability to copy diagrams as images.

KaTeX Math

Render mathematical expressions beautifully with KaTeX support for inline and block math.

Syntax Highlighting

KaTeX Math

Interactive Mermaid diagrams with zoom and pan

Navigation & Organization

File Explorer Sidebar

Built-in file explorer with a resizable sidebar for browsing your Markdown files.

Quick Access Bookmarks

Pin frequently used files and directories for instant access.

Table of Contents

Automatic TOC panel generated from your document's headings for easy navigation.

Directory History

Navigate back and forward through your browsing history with keyboard shortcuts.

Live Link Navigation

Click links to other Markdown documents and navigate seamlessly between files.

File Explorer Sidebar

Table of Contents Panel

Search & Discovery

⌘FFind in Page

Quick search within the current document with highlight navigation.

Pinned Search

Persistent multi-color highlighting that stays visible as you navigate.

Find in Page

Pinned Search

Window & Tab Management

Tab Support

Open multiple documents in tabs for easy switching.

Multi-Window

Open documents in new windows, including separate windows for diagrams.

Drag & Drop

Drop files onto Arto to open them, or drag tabs between windows.

Context Menus

Right-click menus for tabs, sidebar, and content with useful actions.

Multi-Window Support

Customization

Dark Mode

Beautiful dark theme that syncs with your system preferences.

⌘+⌘-Zoom

Adjust text size with keyboard shortcuts or trackpad gestures.

Preferences

Configure sidebar, TOC, and other settings to your liking.

Integrations

Command Line

Open files and directories directly from your terminal. Arto uses a single-instance architecture—if it's already running, files are handed off to the existing window seamlessly.

Terminal

# Open a file
arto README.md

# Open multiple files
arto file1.md file2.md

# Open a directory
arto ~/Documents/project

Vim / Neovim

The official arto.vim plugin lets you preview Markdown files in Arto without leaving your editor.

:Arto

Open the current buffer in Arto with a single command.

:Arto {path}

Open any file or multiple files by specifying paths.

Emacs

The official arto.el package lets you open Markdown files in Arto directly from Emacs.

M-x arto-open

Open the current buffer in Arto with a single command.

C-u M-x arto-open

Prompt for a file to open in Arto.

Keyboard Shortcuts

⌘O

Open file

⌘F

Find in page

⌘T

New tab

⌘W

Close tab

⌘+

Zoom in

⌘-

Zoom out

⌘0

Reset zoom

⌘,

Preferences

⌘[

Navigate back

⌘]

Navigate forward

⌘B

Toggle sidebar

⌘R

Reload document