request. And because those functions on the TempBLOB table are using .Net, I figured … Add an environment variable (global variables are also possible) 4. Encode 1 binary data into a textual representation. ENCODE. 1. Adding external libraries. If the web API is receiving the file with a parameter / property, then make sure this key name matches the parameter name. POST Request Encode file to Base64 online and embed it into any text document such as HTML, JSON, or XML. Postman Answers. Note: Because base64 can easily be decoded, It’s recommended using Basic authentication using HTTPS/SSL only. Encrypt parameters using CryptoJS | Postman Answers | Postman … Encode Basic Authentication