Markdown language settings
File | Settings | Languages & Frameworks | Markdown for Windows and Linux
PhpStorm | Settings | Languages & Frameworks | Markdown for macOS
CtrlAlt0S 
Use this page to configure Markdown support in PhpStorm.
- Default layout
Select the default layout for the Markdown file editor: show only the editor, only the preview pane, or both. You can change it using buttons in the top right corner of the editor.
- Preview layout
Select how to split the editor and preview pane: vertically (side by side) or horizontally (preview below the editor).
- Sync scroll in the editor and preview
Synchronize the scroll position in the editor with the scroll position in the preview pane.
- Inject languages in code fences
Inject the language specified for the code block to enable coding assistance. For more information, refer to Code blocks.
- Show problems in code fences
Check code blocks for syntax errors according to the specified language.
- Group documents with the same name, but different extensions (.md, .html, .docx, .pdf)
Show MD, HTML, DOCX, and PDF files with the same name as a group in the Project tool window.
- Detect commands that can be run right from Markdown files
Show gutter icons for running commands in Markdown files.
For more information, refer to Run commands from Markdown files.
Customize the style sheets used for rendering HTML in the preview pane. For more information, refer to Custom CSS.
Configure the settings related to converting files to and from Markdown and other formats. For more information, refer to Convert Markdown files
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