extensions : Fetchers

Extends browser detection to include bots that retrieve content from specific URLs on demand

TIP

Bots that automatically visit websites and collect data are categorized as Crawlers instead.

• AhrefsSiteAudit
• Asana
• BingPreview
• bitlybot
• Better Uptime Bot
• Blueno
• Bluesky
• BufferLinkPreviewBot
• ChatGPT-User
• Chrome-Lighthouse
• cohere-ai
• Discordbot
• DuckAssistBot
• FeedFetcher-Google
• Gemini-Deep-Research
• Google-PageRenderer
• Google-Read-Aloud
• Google-Site-Verification
• GoogleImageProxy
• GoogleProducer
• HubSpot Page Fetcher
• Iframely
• kakaotalk-scrap
• LinkedInBot
• Mastodon
• meta-externalfetcher
• MistralAI-User
• MicrosoftPreview
• Perplexity-User
• Pinterestbot
• Redditbot
• rogerbot
• SiteAuditBot
• Slackbot
• Slack-ImgProxy
• Slack-LinkExpanding
• SkypeUriPreview
• Snap URL Preview
• Snapchat
• Telegrambot
• TikTokSpider
• Twitterbot
• Uptimerobot
• Vercelbot
• vercel-favicon-bot
• vercel-screenshot-bot
• vercelflags
• verceltracing
• WhatsApp
• YaDirectFetcher
• YandexCalendar
• YandexDirect
• YandexDirectDyn
• YandexSearchShop
• YandexSitelinks
• YandexUserProxy
• Zoombot
• ... etc.

Code Example

import { Fetchers } from 'ua-parser-js/extensions';

const bingprev = 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/534+ (
- `KHTML` like Gecko) BingPreview/1.0b';

const fetcherParser = new UAParser(Fetchers);

console.log(fetcherParser.setUA(bingprev).getBrowser());
// {name: "BingPreview", version: "1.0", major: "1.0b'", type: "fetcher"});