Open a document

Choose File → Open… or double-click a supported file. To preview a file in Finder, select it and press Space.

If Finder does not show GlyphGlance's preview, enable GlyphGlance Quick Look in System Settings → General → Login Items & Extensions → Quick Look. Another Markdown preview extension may need to be disabled if it takes priority.

Supported file endings include .md, .markdown, .mdown, .mkd, .mkdn, .mermaid, .mmd, and .fountain. Leave Markdown Variant on Automatic unless a document needs a particular profile. Changing the profile affects only the current window.

View and share diagrams

Mermaid diagrams appear alongside the document's text. Hover over a diagram or move keyboard focus into it to reveal its controls:

• Enlarge opens the diagram in a separate display-sized window. Escape returns to the document.
• Share shares that diagram through macOS, without the surrounding document.
• Copy copies the diagram; paste it into another app with Command–V. A brief checkmark confirms copying.

Sharing offers vector SVG and PDF. Copying also offers image formats for apps that need them. The receiving app chooses the format it can use. Text-only fields cannot paste a diagram image. Shared and copied diagrams use a light background.

Expand Description and source below a diagram to read its description or original text. GlyphGlance can recover from a limited kind of punctuation typo and shows a notice when it does. Other diagram errors must be corrected in the original file with an editor. GlyphGlance never edits the source.

Finder Quick Look displays diagrams and their descriptions but does not include the app's Enlarge, Share, or Copy controls.