Yes. SciNote gives you the option of uploading different types of data. You can choose between text (e.g. a sequence of base pairs of a plasmid vector), a table (e.g. table of calculated solution concentrations), and any type of a file (e.g. gel image of DNA electrophoresis).
The text feature also allows you to embed your image under the individual protocol step within a task. This is done by clicking on the Choose an image icon as seen in the image below.