LINE OpenChat Scraper

Scrape public room metadata from LINE OpenChat — Japan's largest public chat platform, also widely used in Taiwan and Thailand. Extracts room name, description, member count, hashtags, region, and icon URL from the public OpenChat directory. No LINE account required.

What It Does

LINE OpenChat hosts millions of public chat rooms covering entertainment, gaming, K-pop fandoms, local communities, news, language exchange, and more. This actor crawls the OpenChat public directory via sitemaps and extracts structured room metadata.

Coverage:

• Japan (jp) — largest collection, millions of rooms
• Taiwan (tw)
• Thailand (th)

Use Cases

• JP/SEA market research — discover active communities around topics, brands, or products in Japanese and Southeast Asian markets
• Fandom & entertainment analytics — track member counts and activity for K-pop, anime, manga, and gaming communities
• Language community discovery — find language exchange rooms by keyword and region
• Regional trend monitoring — identify trending topics in JP/TW/TH via active public rooms

Output

Each record represents one LINE OpenChat room:

Field	Type	Description
room_id	string	Unique room hash identifier
room_url	string	Canonical URL to the room page
room_name	string	Room display name
room_description	string	Full room description text
room_member_count	integer	Current number of members
room_tags	string	Hashtags from description (comma-separated)
room_region	string	Region: jp, tw, or th
room_language	string	Language code: ja, zh, or th
room_icon_url	string	Room profile image URL (LINE CDN)
source_url	string	URL scraped to produce this record

Input

Parameter	Type	Default	Description
maxItems	integer	100	Maximum number of rooms to scrape
region	string	jp	Region: jp, tw, th, or all

How It Works

1. Sitemap discovery — walks the OpenChat sitemap index (/sitemap_index.xml) to find room URLs for the selected region(s). Each regional sitemap contains thousands of room URLs.
2. Detail extraction — fetches each room page (server-rendered Nuxt HTML — no JavaScript execution needed) and extracts structured metadata from the DOM.
3. Hashtag parsing — extracts #tag patterns from room descriptions and returns them as a comma-separated string.

No Cloudflare bypass or proxy required. The site returns full HTML to standard HTTP requests. Rooms that have been deleted or made private are automatically skipped.

Rate Limits

LINE OpenChat does not impose aggressive rate limiting. The actor runs conservatively (5 concurrent requests) to be a good citizen.

Notes

• Deleted or private rooms in the sitemap return HTTP 200 status but render a 404-style page with no content. These are detected and skipped automatically (expect 5–15% skip rate in the JP sitemap).
• Member counts reflect the room's public membership at scrape time.
• Room URLs include the region prefix (/jp/, /tw/, /th/) which determines the language code in the output.