You can do this for the rest icons, like bold, italic, underline, or headers.
This is an output:
How to design it in Figma
Preview
What does it consist of?
14x Frame
14x Vector
1x Text
Procedure
Step 1 - create vertical frame
Add a new Frame (F command) with vertical auto layout (SHIFT + A command) object, call it "vercont_richtext_custom" with these properties:
Step 2 - create text input
Add a new Frame (F command) with horizontal auto layout (SHIFT + A command) object under a "vercont_richtext_custom" frame, call it "txtpcf_multiline" with these properties:
Add a new Text (T command) object under a "txtpcf_multiline" frame, call it "insert text..." with these properties:
Step 3 - create action icons
Add a new Frame (F command) with horizontal auto layout (SHIFT + A command) object under a "vercont_richtext_custom" frame, call it "horcont_icons_frame" with these properties:
Add Vectors under this frame, you can use SVG code from the previous section.
This is an output:
How to use it via DesignKit
Prerequisites
the designed component according to the instructions from the previous section