Fill is a document management tool that can be used by businesses to share and store PDF files. Users can search through a library of thousands of existing documents via the search toolbar that has been provided on their website. Alternatively, they can also drag and drop the file that they want to store on the website. Apart from sharing, users can fill PDF documents and sign them digitally. They can get started by signing up and making an account on the website. Once the signup process is complete, they can then browse through a library of templates that includes various forms types. These range from Land Registry - RX4, W9-form, HMRC New Charter checklist, and Land Registry - TR1. The account can also be upgraded to access extended features such as signing and sending documents regularly and adding a customized database of forms.