Adjust the font size in a Coggle Diagram

There are two ways to adjust the font size in a Coggle diagram. This article is about adjusting the size of individual items, to add emphasis. If you want to make all of the text in a diagram bigger, it's better to scale/zoom the whole page to your preference.


To adjust the text size of an item, click on it to edit it, then drag the grip that appears in the corner of the text editing area:

  • Drag upwards or downwards to change the size of the text (the new font size is shown while you drag). Text can be from 8px to 50px.
  • Drag left or right to control the width at which the text wraps.

Click the grip without dragging to fit the width to the text again. Hold the [ctrl]   key while dragging to use whole pixel sizes, or hold [shift]   when you start dragging to also resize all of the items connected to it (see change the text size of multiple items).


You can also change the text size using our keyboard shortcuts, for more precise control. First click on an item to edit it, and then:


  • [ctrl] + [+]   (or [⌘ cmd] [+]   on Mac) increases the text size to the next standard size.
  • [ctrl] + [-]   reduces the text size.
  • [ctrl] + [shift] + [+]   increases the text size by exactly 1px.
  • [ctrl] + [shift] + [-]   reduces the text size by exactly 1px.
  • [ctrl] + [0]   sets the text size of the current item to the standard size (13px)

It isn't possible to change the typeface font in Coggle, but you can use bold and italic text with the formatting button "A" in the text editing area, or with the Markdown formatting that we support:

  • wrap text in `back-ticks` for fixed-width text.
  • Use **double asterisks** for bold.
  • Use *single asterisks* for italic.