Here are the available options and limitations.
Viber Business Messages can include a button and an image in addition to text. Not all button/text/image combinations are allowed.
Viber Business Messages CAN include:
- image only
 - text only
 - text+image+button
 - text+button
 
Viber Business Messages CANNOT include:
- text+image
 - image+button
 
Viber Business Messages DON’T support:
- GIFs
 - Video
 - Audio
 - Other attachments
 
Character limits:
- Text: 1000 symbols/UTF-8 characters
 - Button inscription – 30 characters
 - Viber service name – max. of 30-35 symbols
 
Image:
Viber supports the following image formats: JPG/JPEG/PNG. It is recommended to use 400×400 images in JPG format for the best quality.
Logos:
Brand logos are displayed in the left upper corner of the screen when the user scrolls through messages. Business account logo formats available:
- 50×50, PNG
 - 60×60, PNG
 - 100×100, PNG
 - 130×130, PNG
 - 360×280, PNG