I chose iOS and then App but I don't have the files like "AppDelegate.swift" or "ViewControler.swift" The tutorial I'm trying to follow is the one on developer.apple (https://developer.apple.com/library/archive/referencelibrary/GettingStarted/DevelopiOSAppsSwift/BuildABasicUI.html#//apple_ref/doc/uid/TP40015214-CH5-SW1) If you have any idea of a better tutorial for beginner that I should follow I'd like to have the name

I strongly recommend you not to use too short string such as "&" as boundary. I chose to generate a UID as my boundary The bodyData is not in the right format for multipart/form-data. I've been looking at the format of the form-data and based on what I saw on the tutorial I now have: 						var body = "" 						body += "--\(boundary)\r\n" 						body += "Content-Disposition:form-data; name=\"image\"" 						body += "\r\n\r\n\(base64Image ?? "")\r\n" 						body += "; name=\"title\"" 						body += "mycat\r\n" 						body += "--\(boundary)--\r\n" 						let postData = body.data(using: .utf8) 						request.httpBody = postData The request works perfectly fine, the response I get is the following: {"data":{"id":"wfoNb7C","title":null,"description":null,"datetime":1602920269,"type":"image\/png","animated":false,"width":275,"height":183,"size":90250,"views":0,"bandwidth":0,"vote":null,"favorite":false,"nsfw":null,"section":null,"account_url":null,"account_id":139373323,"is_ad":false,"in_most_viral":false,"has_sound":false,"tags":[],"ad_type":0,"ad_url":"","edited":"0","in_gallery":false,"deletehash":"fQm4439FpbjD3Ya","name":"","link":"https:\/\/i.imgur.com\/wfoNb7C.png"},"success":true,"status":200} but the title of the image is not set despite I try to add it in my request Any ideas on how to fix this problem ?

You usually put Content-Disposition:form-data; name="field-name" as the part header for the text field. I tried to do as instructed which makes my body looks like this: 						body += "--\(boundary)\r\n" 						body += "Content-Disposition:form-data; name=\"image\"" 						body += "\r\n\r\n\(base64Image ?? "")\r\n" 						body += "Content-Disposition:form-data; name=\"title\"" 						body += "\r\n\r\n\(name)\r\n" 						body += "--\(boundary)--\r\n" The request still works but the title of the picture is not defined I think I did not mention it but the request I'm trying to use is the post image from the Imgur API https://apidocs.imgur.com/#de179b6a-3eda-4406-a8d7-1fb06c17cb9c Edit: Also tried adding a boundary between to have something like this: body += "--\(boundary)\r\n" 						body += "Content-Disposition:form-data; name=\"image\"" 						body += "\r\n\r\n\(base64Image ?? "")\r\n" 						body += "--\(boundary)--\r\n" 						body += "Content-Disposition:form-data; name=\"title\"" 						body += "\r\n\r\n\(name)\r\n" 						body += "--\(boundary)--\r\n" but this is still not working Edit2: Had to change the way of putting the boundary to something like this: body += "--\(boundary)\r\n" which makes the body look like this: body += "--\(boundary)\r\n" 						body += "Content-Disposition:form-data; name=\"image\"" 						body += "\r\n\r\n\(base64Image ?? "")\r\n" 						body += "--\(boundary)\r\n" 						body += "Content-Disposition:form-data; name=\"title\"" 						body += "\r\n\r\n\(name)\r\n" 						body += "--\(boundary)--\r\n" Which is now working Thanks again for your help and the time you took to answer my questions !