This metadata generator was developed to help users create JSON-LD metadata for their data. The web interface of the applications starts with showing the available lists of maturity indicators. The user chooses the preferred list for describing the data. Next, a web form is shown (Figure ) where the user fills the fields, and JSON-LD metadata is automatically generated. The interface Minimum set of physical and chemical properties to be included in safety data sheets (SDS) of chemicals 19