LINE message types
The LINE node in Scenarios supports the following message formats. Each type has specific content requirements and constraints. Use this page as a reference when composing messages in Scenarios.
All interactive message types—Card, Choice, and Carousel—support the same three button types:
- Text: sends a predefined text reply from the customer
- URL: opens a link in the LINE browser
- Call: initiates a phone call
Text message
A plain text message up to 5,000 characters. Use text messages for straightforward notifications, updates, or conversational messages.
| Max characters | 5,000 |
|---|
Media message: Image
A static image message with no accompanying text body.
| Supported formats | JPG/JPEG/PNG |
|---|---|
| Min width | 500 px |
| Max width | 1024 px |
| Aspect ratio | 1.51:1 or 1:1 |
| Max file size | 10 MB |
| Supported media URL | HTTPS |
Media message: Video
A video message with a required thumbnail image. The thumbnail is displayed before the customer plays the video.
| Supported formats | MP4 |
|---|---|
| Max file size | 200 MB |
| Thumbnail format | JPG/JPEG/PNG |
| Max thumbnail size | 1 MB |
Choice message
A text message paired with one or more reply buttons. Use choice messages to guide customers toward a specific action or collect a simple response.
| Text max characters | 5000 |
|---|---|
| Button label max characters | 160 |
| Max buttons | 4 |
| Button types | Text (opens text in chat), URL (opens URL in the in-app browser), location (opens Google Maps), call (opens dialer with prefilled number) |
Card message
A single rich card combining an image, a title, a description, and one or more buttons. Use cards for product highlights, featured offers, or calls to action.
| Image aspect ratio | 1.51:1 or 1:1 |
|---|---|
| Max width | 1024 px |
| Max image size | 10 MB |
| Title max characters | 40 |
| Description max characters | 60 |
| Max buttons | 4 |
| Button types | Text (opens text in chat), URL (opens URL in the in-app browser), call (opens dialer with prefilled number) |
Carousel message
A horizontal scroll of multiple cards, each with an image, title, description, and buttons. Use carousels to showcase a range of products or options in a single message.
| Min cards | 2 |
|---|---|
| Max cards | 10 |
| Image aspect ratio | 1.51:1 or 1:1 |
| Image max size | 10 MB |
| Title max characters | 40 |
| Description max characters | 60 |
| Max buttons per card | 3 |
| Button types | Text (opens text in chat), URL (opens URL in the in-app browser), call (opens dialer with prefilled number) |