Create AI diary entries from LINE photos with OpenAI Vision and Google Drive

Overview

This workflow turns photos sent to a LINE bot into tiny AI-generated diary entries and saves everything neatly in Google Drive. Each time a user sends an image, the workflow creates a timestamped photo file and a matching text file with a short diary sentence, stored inside a year/month folder structure (KidsDiary/YYYY/MM). It’s a simple way to keep a lightweight visual diary for kids or daily life without manual typing.

LINE Photo to AI Diary with Goo…

Who this is for

Parents who want to archive kids’ photos with a short daily comment

People who often send photos to LINE and want them auto-organized in Drive

Anyone who prefers a low-friction, “take a photo and forget” style diary

How it works

Trigger: A LINE Webhook receives an image message from the user.

Extract metadata: The workflow extracts the messageId and replyToken.

Download image: It calls the LINE content API to fetch the image as binary.

AI diary text: OpenAI Vision generates a one-sentence, diary-style caption (about 50 Japanese characters).

Folder structure: A KidsDiary/YYYY/MM folder is created (or reused) in Google Drive.

Save files: The photo is saved as YYYY-MM-DD_HHmmss.jpg and the diary text as YYYY-MM-DD_HHmmss_diary.txt in the same folder.

Confirm on LINE: The bot replies to the user that the photo and diary have been saved.

How to set up

Connect your LINE Messaging API credentials in the HTTP Request nodes.

Connect your Google Drive credential in the Google Drive nodes and choose a root folder.

Make sure the webhook URL is correctly registered in the LINE Developers console.

Customization ideas

Change the AI prompt to adjust tone (e.g., more playful, more sentimental).

Localize the diary language or add an English translation.

Add a second branch to post the saved diary entry to Slack, Notion, or email.

Organize Google Drive folders by child’s name instead of only by date.