The editor

The editor is built on CodeMirror 6 and edits the Markdown file directly. Nothing is stored in another format.

Live Preview

With Live Preview on (Settings → Editor, on by default), Markdown syntax hides itself except on the line you are editing: headings show without #, bold without **, links show only their text, task markers become checkboxes. Move the cursor onto a line to see and edit its source. The file on disk always keeps the full Markdown.

Turn Live Preview off to see the raw Markdown everywhere.

Tables

Outside the cursor, Markdown tables render as a grid you can type into directly. Each cell edit rewrites the Markdown table, aligned and undoable.

• Enter moves to the cell below; Escape returns to the text.
• + Row adds a row at the end.
• Edit as Markdown puts the cursor in the table source.

Math

LaTeX math renders with KaTeX, in Live Preview and in the reading view:

Inline $E = mc^2$ in a sentence.

$$
\int_0^1 x\,dx
$$

Invalid TeX shows as red source text instead of breaking the note. Prices such as $5 and $10 stay plain text.

Links while you type

Type [[ to get suggestions from the vault, ranked as you type. Choosing one inserts the shortest unambiguous link text. See links and backlinks.

Formatting shortcuts

Action	Shortcut
Bold / italic / link	⌘B / ⌘I / ⌘K
Toggle checkbox	⌘L
Find in note	⌘F
Undo / redo	⌘Z / ⇧⌘Z

All shortcuts can be changed in Hotkeys.

Images and attachments

Paste or drop a file into the editor. Synapse saves it to the vault’s attachment folder and inserts ![[file name]]. The attachment folder is a vault setting: the vault root, a folder of your choice, or ./ for the same folder as the note.

Saving

Notes autosave shortly after you stop typing, and also when you close a tab, switch vault or quit. Writes are atomic: a crash cannot leave a half-written file. If the file changed on disk while you had unsaved edits, Synapse shows a conflict banner instead of overwriting; see Troubleshooting.