Best way to upload Chatter file

Question

According to this document,

In version 36.0 and later, you can’t create a feed post and upload a binary file in the same request. Upload files to Salesforce first, and then use the file IDs to attach one or more files to a feed post.

So now you have to upload the file first, then reference the file Id when creating a feed element from the REST API

{
"body":{
  "messageSegments":[
     {
        "type":"Text",
        "text":"Please take a look at these files."
     }
  ]
},
"capabilities":{
  "files":{
     "items": [
        {"id": "069D00000001IOh"},
        {"id": "069D00000002IOg"}
     ]
  }
},
"subjectId":"me",
"feedElementType":"FeedItem"
}

My question is, what is the best practice for uploading files to Salesforce? The only way I can see to just upload a file is using this resource:

/services/data/v40.0/connect/files/users/me

However, if I upload it to "me" will everyone who has access to the record have access to the file?

Answer 1

If the file is uploaded to me then it is by default privately shared.

You need to open up file access via sharing.

Refer Who Can See My File?