Why did my FriendTalk message sent with an image fail?

[Donna_M]

It is important that your media file complies with the KakaoTalk's criteria, which is defined  in the Media Messages section of our KakaoTalk developer documentation:

Media included in the Media message will be rejected by the channel if:

• the width is below 500px, or if the 'width:length' ratio is below 2:1, or above 3:4 or if the image dimension is not equal to [800px * 600px]
• image file format is different than JPG or PNG
• file size is bigger than 500KB or for image with dimension [800px * 600px] is bigger than 2MB.

Double check your image and make sure it's in the right format before resending your FriendTalk message.  Here are few examples you can use: 

• 500x1000 px, 500x800 px, 500x500 px, 500x400 px
• 600x1200 px, 600x960 px, 600x450 px
• 720x720 px (Recommended!)
• 800x600px (wide image)

The Sinch Developer Documentation site contains comprehensive documentation that illustrates how Sinch supports KakaoTalk through the Conversation API.