Send an Image Message

In this code snippet you will see how to send a Viber image message using the Messages API.

NOTE: It is important that you read this information about Viber accounts and messaging before trying this code snippet.

For a step-by-step guide to this topic, you can read our tutorial Sending Viber Business Messages with the Messages API.

Example

Find the description for all variables used in each code snippet below:

Key	Description
`VONAGE_APPLICATION_ID`	The Vonage Application ID.
`VONAGE_APPLICATION_PRIVATE_KEY_PATH`	Private key path.
`VONAGE_PRIVATE_KEY_PATH`	Private key path.
`BASE_URL`	For production use the base URL is `https://api.nexmo.com/`. For sandbox testing the base URL is `https://messages-sandbox.nexmo.com/`.
`MESSAGES_API_URL`	There are two versions of the API, each with their own endpoints. For production the previous Messages API endpoint was `https://api.nexmo.com/v0.1/messages`, the new one is `https://api.nexmo.com/v1/messages`. For sandbox testing the Messages API endpoint is `https://messages-sandbox.nexmo.com/v0.1/messages` or `https://messages-sandbox.nexmo.com/v1/messages`, depending on which version you have set in the sandbox dashboard.
`VONAGE_APPLICATION_ID`	The Vonage Application ID.
`VIBER_SERVICE_MESSAGE_ID`	Your Viber Business Message ID. For sandbox testing this is 16273.
`VONAGE_VIBER_SERVICE_MESSAGE_ID`	Refer to `VIBER_SERVICE_MESSAGE_ID` above.
`VONAGE_NUMBER`	Refer to `VIBER_SERVICE_MESSAGE_ID` above.
`FROM_ID`	Refer to `VIBER_SERVICE_MESSAGE_ID` above.
`TO_NUMBER`	Replace with the number you are sending to. E.g. `447700900001`
`IMAGE_URL`	The link to the image file to send.

NOTE: Don't use a leading + or 00 when entering a phone number, start with the country code, for example, 447700900000.

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

Write the code

Add the following to send-image.sh:

curl -X POST "${MESSAGES_API_URL}" \
  -H "Authorization: Bearer "$JWT\
  -H 'Content-Type: application/json' \
  -H 'Accept: application/json' \
  -d $'{
    "to": "'${MESSAGES_TO_NUMBER}'",
    "from": "'${VIBER_SENDER_ID}'",
    "channel": "viber_service",
    "message_type": "image",
    "image": {
      "url": "'${MESSAGES_IMAGE_URL}'"
    }
  }'

View full source

Run your code

Save this file to your machine and run it:

bash send-image.sh

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

npm install @vonage/server-sdk @vonage/messages

Create a file named send-image.js and add the following code:

const { Vonage } = require('@vonage/server-sdk');
const { Channels } = require('@vonage/messages');

/**
 * It is best to send messages using JWT instead of basic auth. If you leave out
 * apiKey and apiSecret, the messages SDK will send requests using JWT tokens
 *
 * @link https://developer.vonage.com/en/messages/technical-details#authentication
 */
const vonage = new Vonage(
  {
    applicationId: VONAGE_APPLICATION_ID,
    privateKey: VONAGE_PRIVATE_KEY,
  },
  {
    ...(MESSAGES_API_URL ? {apiHost: MESSAGES_API_URL} : {}),
  },
);

View full source

Write the code

Add the following to send-image.js:

vonage.messages.send({
  messageType: 'image',
  channel: Channels.VIBER,
  image: {
    url: MESSAGES_IMAGE_URL,
  },
  to: MESSAGES_TO_NUMBER,
  from: VIBER_SENDER_ID,
})
  .then(({ messageUUID }) => console.log(messageUUID))
  .catch((error) => console.error(error));

View full source

Run your code

Save this file to your machine and run it:

node send-image.js

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

Add the following to build.gradle:

Create a file named SendViberImage and add the following code to the main method:

View full source

Write the code

Add the following to the main method of the SendViberImage file:

View full source

Run your code

We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:

Run the following gradle command to execute your application, replacing com.vonage.quickstart.kt.messages.viber with the package containing SendViberImage:

gradle run -Pmain=com.vonage.quickstart.kt.messages.viber.SendViberImage

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

Add the following to build.gradle:

Create a file named SendViberImage and add the following code to the main method:

VonageClient client = VonageClient.builder()
		.applicationId(VONAGE_APPLICATION_ID)
		.privateKeyPath(VONAGE_PRIVATE_KEY_PATH)
		.build();

View full source

Write the code

Add the following to the main method of the SendViberImage file:

var response = client.getMessagesClient().sendMessage(
		ViberImageRequest.builder()
			.from(VIBER_SENDER_ID)
			.to(MESSAGES_TO_NUMBER)
			.url(MESSAGES_IMAGE_URL)
			.build()
);
System.out.println("Message sent successfully. ID: "+response.getMessageUuid());

View full source

Run your code

We can use the application plugin for Gradle to simplify the running of our application. Update your build.gradle with the following:

Run the following gradle command to execute your application, replacing com.vonage.quickstart.messages.viber with the package containing SendViberImage:

gradle run -Pmain=com.vonage.quickstart.messages.viber.SendViberImage

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

Install-Package Vonage

Write the code

Add the following to SendViberImage.cs:

View full source

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

composer require vonage/client

Create a file named send-image.php and add the following code:

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Write the code

Add the following to send-image.php:

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Run your code

Save this file to your machine and run it:

php send-image.php

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

pip install vonage python-dotenv

Write the code

Add the following to send-image.py:

View full source

Run your code

Save this file to your machine and run it:

python messages/viber/send-image.py

Prerequisites

If you do not have an application you can create one. Make sure you also configure your webhooks.

gem install vonage

Create a file named send-image.rb and add the following code:

client = Vonage::Client.new(
  application_id: VONAGE_APPLICATION_ID,
  private_key: VONAGE_PRIVATE_KEY
)

View full source

Write the code

Add the following to send-image.rb:

message = client.messaging.viber(
  type: 'image',
  message: {
    url: MESSAGES_IMAGE_URL
  }
)

client.messaging.send(
  from: VIBER_SENDER_ID,
  to: MESSAGES_TO_NUMBER,
  **message
)

View full source

Run your code

Save this file to your machine and run it:

ruby send-image.rb

Try it out

When you run the code a Viber image message is sent to the destination number.