Crawler List: 14 Most Common Web Crawlers in 2024

1. Googlebot
   • Primary crawler for Google Search, indexing content for Google’s search engine.
   • User-Agent: “Mozilla/5.0 (compatible; Googlebot/2.1; +http://www.google.com/bot.html)”
2. Bingbot
   • Microsoft’s search crawler for Bing, indexing web pages for its search engine.
   • User-Agent: “Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)”
3. Yandex Bot
   • The main crawler for Yandex, Russia’s largest search engine, similar to Googlebot.
   • User-Agent: “Mozilla/5.0 (compatible; YandexBot/3.0; +http://yandex.com/bots)”
4. DuckDuckBot
   • The official bot for DuckDuckGo, a privacy-focused search engine.
   • User-Agent: “DuckDuckBot/1.0; (+https://duckduckgo.com/duckduckbot)”
5. Baidu Spider
   • Baidu’s bot, designed to crawl for the largest search engine in China.
   • User-Agent: “Mozilla/5.0 (compatible; Baiduspider/2.0; +http://www.baidu.com/search/spider.html)”
6. AhrefsBot
   • Used by Ahrefs, a popular SEO and web analysis tool for indexing backlinks and other SEO data.
   • User-Agent: “Mozilla/5.0 (compatible; AhrefsBot/7.0; +http://ahrefs.com/robot/)”
7. SEMrushBot
   • Crawls websites for SEMrush, an SEO tool used for keyword research, competitor analysis, and ranking.
   • User-Agent: “Mozilla/5.0 (compatible; SEMrushBot/3~bl; +http://www.semrush.com/bot.html)”
8. Majestic Bot
   • The crawler for Majestic, an SEO tool used for backlink analysis.
   • User-Agent: “Mozilla/5.0 (compatible; MJ12bot/v1.4.8; http://www.majestic.com/bot)”
9. Screaming Frog SEO Spider
   • Desktop-based crawler for SEO audits; often used by webmasters to analyze their own sites.
   • User-Agent: “Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.5112.81 Safari/537.36 Screaming Frog SEO Spider/18.0”
10. Applebot
    • Apple’s web crawler, used for Siri and Spotlight suggestions.
    • User-Agent: “Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_1) AppleWebKit/537.36 (KHTML, like Gecko) Version/13.0.3 Safari/537.36 (Applebot/0.1; +http://www.apple.com/go/applebot)”
11. Facebook Crawler
    • Used by Facebook to fetch metadata for URLs shared on its platform.
    • User-Agent: “facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)”
12. Twitterbot
    • Twitter’s bot, used to fetch page content when URLs are shared on its platform.
    • User-Agent: “Twitterbot/1.0”
13. LinkedInBot
    • Used by LinkedIn for fetching URL metadata for previews on its platform.
    • User-Agent: “Mozilla/5.0 (compatible; LinkedInBot/1.0)”
14. Pinterest Bot
    • Pinterest’s crawler, collects data for links shared on Pinterest.
    • User-Agent: “Mozilla/5.0 (compatible; Pinterestbot/1.0; +http://www.pinterest.com/bot.html)”

These are some of the most active and commonly observed crawlers in 2024, covering major search engines, social platforms, and SEO tools. Monitoring them can provide insights into your site’s visibility across search and social channels.