upload media for sending Whatsapp documents and media

Ultramsg supports sending photos, videos, and documents through a direct URL, but if you need to send documents from a local server, you must use and convert the files to base64 format and then send them. But the disadvantage of base64 is that the size is limited to a maximum of 10 million characters, about 6.5M.

We have provided an alternative and better solution for this by uploading the file from the local server to a CDN at a free cost for Ultramsg clients.

Route path : [POST] /media/upload

required parameters :

• file: file name like /path/example.pdf.
• token: your instance token.

postman collection for making test uploading files

you can import the postman collection from here.

example for uploading Documents using PHP

<?php

$curl = curl_init();
curl_setopt_array($curl, array(
  CURLOPT_URL => 'https://api.ultramsg.com/instance950/media/upload',
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => '',
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 0,
  CURLOPT_FOLLOWLOCATION => true,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => 'POST',
  CURLOPT_POSTFIELDS => array('file' => new CURLFILE('sample.pdf'), 'token' => 'Yourtoken'),
));

$response = curl_exec($curl);
curl_close($curl);
echo $response;

After sending the previous request, the file link will be returned to you for use in sending the WhatsApp API.

example for uploading Documents using Python

import requests

url = "https://api.ultramsg.com/instance950/media/upload"

payload={'token': 'Yourtoken'}
files=[
  ('file',('sample.pdf',open('/folder/sample.pdf','rb'),'application/pdf'))
]
headers = {}

response = requests.request("POST", url, headers=headers, data=payload, files=files)

print(response.text)

example for uploading Documents using c#

using System.Net;
using System.Text;

namespace FileUploadExample
{
    class Program
    {
        static void Main(string[] args)
        {
            var token = "Yourtoken";
            var instance = "instance950";

            var filePath = "/folder/sample.pdf";
            var url = "https://api.ultramsg.com/" + instance + "/media/upload/?token=" + token;

            var client = new WebClient();

            var response = client.UploadFile(url, "POST", filePath);
            string responseInString = Encoding.UTF8.GetString(response);
            Console.WriteLine(responseInString);

        }
    }
}

example for uploading Documents using curl

curl --location --request POST 'https://api.ultramsg.com/instance950/media/upload' \
--form 'file=@"/folder/sample.pdf"' \
--form 'token="Yourtoken"'

example for uploading Documents using NodeJs – Request lib

var request = require('request');
var fs = require('fs');
var options = {
  'method': 'POST',
  'url': 'https://api.ultramsg.com/instance950/media/upload',
  'headers': {
  },
  formData: {
    'file': {
      'value': fs.createReadStream('/folder/sample.pdf'),
      'options': {
        'filename': 'sample.pdf',
        'contentType': null
      }
    },
    'token': 'Yourtoken'
  }
};
request(options, function (error, response) {
  if (error) throw new Error(error);
  console.log(response.body);
});

example for uploading Documents using vb.net

Imports System.Net
Imports System.Text

Module Program
    Sub Main(args As String())
        Const token As String = "Yourtoken"
        Const instance = "instance950"
        Const filePath = "test.jpg"
        const url = "https://api.ultramsg.com/" & instance & "/media/upload/?token=" & token
        Dim client = New WebClient()
        Dim response = client.UploadFile(url, "POST", filePath)
        Dim documentUrl As String = Encoding.UTF8.GetString(response)
        Console.WriteLine(documentUrl)
    End Sub
End Module