Note: We’re using Bytescale’s File Upload API to upload test files in these examples, but the same steps apply to any API that accepts file uploads. (We’re using the API key “free” below, which you can use without creating an Bytescale account .) Note 2: Bytescale was rebranded from Upload.io on August 2023 . The examples below use our old APIs, which we are continuing to support in parallel to…