You can search Unsplash images with any filter and directly select the url to your form input. Don't need to open other tab and you can do it directly on your form input. Search exactly what you need with some filters help.
Many filters to use and search exactly what you want
A regular license allows an item to be used in one project for either personal or commercial use by you or on behalf of a client. The item cannot be offered for resale either on its own or as part of a project. Distribution of source files is not permitted.
An extended license allows an item to be used in unlimited projects for either personal or commercial use. The item cannot be offered for resale "as-is". It is allowed to distribute/sublicense the source files as part of a larger project.