Binary data transfer format?

Question

css

It is required to give various files in the API, be it pictures, documents, etc., what transfer format is suitable for this?
Previously, json was used, but it is inconvenient to convert everything to base64, I didn’t use binary formats: bson, Protocol_Buffers, etc., I don’t understand which one to choose and whether it is suitable for the task. Recommend format

Answer 1

In the console it says that there is a protocol
https://jsfiddle.net/mrnobody/mrv0kth6/9/

Answer 2

You can specify the type in the response body

{
 "url": "https://cdn.mysite.com/mybucket1/somefile.mp4?expires_at=3987655&md5sum=a1b2c3ff"
}

The client, having received the link, will download the file itself from the CDN cache server, as is. After all, the HTTP protocol allows you to separately transfer binary data without any transformations.