button to start batch conversion. It is easy for machines to parse and generate. JSON or JavaScript Object Notation, as you know is a simple easy to understand data format. JSON can very easily be translated into JavaScript. For example: It can convert DOC to DOCX, but it can't convert DOC to XLSX. It will loop through each JSON data and will check the first key index and store it in the array. Make an HTML drop down list with data received as JSON: If you want to report an error, or if you want to make a suggestion, do not hesitate to send us an e-mail: