Line integration

Overview

The Line tool sends push notifications to LINE users or groups via the LINE Notify API. It supports plain text messages, image attachments (via URL or binary file upload), and LINE sticker attachments. The notification target is determined by the OAuth2 token binding — the token is bound to a specific user/group at authorization time. Note: LINE Notify was officially discontinued on April 1st, 2025.

Node Type

Action (Binary) — handles file/binary data operations

Input / Output

Direction	Port(s)
Input	Input
Output	Output, Error

Credentials

This tool requires LINE Notify credentials. See the Credentials Guide for setup instructions.

Parameters

Parameter	Type	Required	Default	Description
Message	string	Yes	—	The notification message text. Max 1000 characters. Supports expressions like {{ $json.text }}.
Image Mode	options	No	none	How to attach an image to the notification.
				Options: none (no image attachment), url (attach image by providing full-size and thumbnail URLs), binary (upload an image from binary data on the input item)
Image Full Size URL	string	No	—	HTTP/HTTPS URL of the full-size image. Maximum 2048x2048px JPEG. Supports expressions. (shown when Image Mode is url)
Image Thumbnail URL	string	No	—	HTTP/HTTPS URL of the thumbnail image. Maximum 240x240px JPEG. Supports expressions. (shown when Image Mode is url)
Binary Property	string	No	data	Name of the binary property containing the image file to upload. Names are case-sensitive — see the upstream node’s Binary Data panel for the exact names to use. (shown when Image Mode is binary)
Sticker Package ID	number	No	—	LINE sticker package ID. Must be provided together with Sticker ID. See LINE sticker list for valid values. Supports expressions.
Sticker ID	number	No	—	LINE sticker ID. Must be provided together with Sticker Package ID. Supports expressions.
Notification Disabled	boolean	No	false	When true, the recipient does not receive a push notification (the message still appears in the LINE conversation).
Max Concurrency	number	No	10	Maximum number of items to process concurrently.

Output Data

One output item per input item. The LINE Notify API response is merged into the item JSON — the rest of the incoming fields pass through and binary data is forwarded unchanged.

Two fields are written onto the item:

{
  "status": 200,
  "message": "ok"
}

• status — the status code LINE Notify returned for the notification.
• message — LINE Notify’s result text. This overwrites an incoming message field of the same name, so rename it upstream if you need to keep it.

Reference the result downstream by expression, e.g. {{ $json.status }}.

Example Configuration

Send a plain text notification:

{
  "type": "line",
  "parameters": {
    "message": "Deployment finished for {{ $json.service }}"
  }
}

Attach an image by URL:

{
  "type": "line",
  "parameters": {
    "message": "Check out this image!",
    "imageMode": "url",
    "imageFullsize": "https://example.com/images/fullsize.jpg",
    "imageThumbnail": "https://example.com/images/thumbnail.jpg"
  }
}

Upload an image from an upstream node’s binary data:

{
  "type": "line",
  "parameters": {
    "message": "Screenshot attached",
    "imageMode": "binary",
    "binaryPropertyName": "screenshot"
  }
}

Add a sticker to the notification:

{
  "type": "line",
  "parameters": {
    "message": "Monthly target achieved",
    "stickerPackageId": 446,
    "stickerId": 1988
  }
}

Send a silent, high-throughput batch:

{
  "type": "line",
  "parameters": {
    "message": "System maintenance completed successfully",
    "notificationDisabled": true,
    "maxConcurrency": 20
  }
}

Error Handling

Mode	Behavior
stop	Halts workflow on first error
continue	Skips failed items, passes successful ones through
errorPort	Routes failed items to Error output port

Tips

This tool sends notifications to LINE users or groups using the LINE Notify service. It is ideal for delivering messages that include images from a URL or binary upload, or LINE stickers, when a simple text message is insufficient. The tool produces a notification delivered to the specified LINE user or group.

• You do not choose the recipient here. The notification goes wherever the access token was bound at authorization time — one token per user or group. To notify several destinations, create one credential per destination.
• Image Mode is exclusive. url uses Image Full Size URL and Image Thumbnail URL; binary uploads the file named by Binary Property. Only the fields belonging to the selected mode are sent.
• Stickers are all-or-nothing. Sticker Package ID and Sticker ID must both be set, or neither is sent.
• Notification Disabled still delivers the message — it only suppresses the recipient’s push alert, so the text still appears in the LINE conversation.