This article contains a list of known bots whose traffic is dropped by the Pendo agent upon Pendo initialization when the Block data from known bots setting is turned on in Settings > Subscription settings. For more information about this setting, see Bot activity in your usage data and Subscription settings.
The following table lists the values found in the user-agent string sent to your application by the bot or browser. This list is updated when more high-traffic user-agent strings become known to Pendo. It was last updated on April 2, 2025.
| Name | Example |
| baiduspider | "Mozilla/5.0 (compatible; Baiduspider-render/2.0; +http://www.baidu.com/search/spider.html)" |
| bingbot | "Mozilla/5.0 (compatible; bingbot/2.0; +http://www.bing.com/bingbot.htm)" |
| bytespider | "Mozilla/5.0 (Linux; Android 8.0; Pixel 2 Build/OPD3.170816.012)
AppleWebKit/537.36 (KHTML, like Gecko) Chrome/56.0.1511.1269 Mobile
Safari/537.36; Bytespider" |
| comscore | "Mozilla/5.0 (compatible; proximic; +https://www.comscore.com/Web-Crawler)" |
| duckduckbot | "Mozilla/5.0 (compatible;(compatible; DuckDuckBot-Https/1.1; https://duckduckgo.com/duckduckbot)" |
| ev-crawler | "Mozilla/5.0 (compatible; ev-crawler/1.0; +https://headline.com/legal/crawler)" |
| facebookbot | "Mozilla/5.0 (compatible; FacebookBot/1.0; +https://developers.facebook.com/docs/sharing/webmasters/facebookbot/)" |
| facebookcatalog | "facebookcatalog/1.0" |
| facebookexternalhit | "facebookexternalhit/1.1 (+http://www.facebook.com/externalhit_uatext.php)" |
| googlebot | "Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; Googlebot/2.1; +http://www.google.com/bot.html) Chrome/W.X.Y.Z Safari/537.36" |
| meta-externalagent | "meta-externalagent/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)" |
| meta-externalfetcher | "meta-externalfetcher/1.1 (+https://developers.facebook.com/docs/sharing/webmasters/crawler)" |
| pagekeeper | "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/535.21 (KHTML, like Gecko) Chrome/19.0.1042.0 Safari/535.21 PagePeeker/2.1; +http://pagepeeker.com/robots/" |
| seekportbot | "Mozilla/5.0 (compatible; SeekportBot; +https://bot.seekport.com)" |
| sitebulb | "Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3835.0 Safari/537.36 (compatible; Sitebulb/1.1; +https://sitebulb.com)" |
| twitterbot | "Twitterbot/1.0 Mozilla/5.0 (Windows NT 6.2; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) QtWebEngine/5.12.3 Chrome/69.0.3497.128 Safari/537.36" |
| telegrambot | "TelegramBot (like TwitterBot)" |
| ruxitsynthetic | "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/128.0.6613.84 Safari/537.36 RuxitSynthetic/1.0 v121195470181 t6999150042381094850 ath4af26d38 altpub cvcv=2 smf= |
Block custom bots
After turning on Block data from known bots in your subscription settings, you can also block up to 20 suspected bots by selecting Manage additional crawlers.
Pendo aggregates suspected bot activity and displays any newly detected bots in a separate table. From this table, you can:
- Review suspected bot user-agent strings and their activity.
- Block suspected bots from sending data to Pendo.
Blocked bots stop contributing to analytics and data missed during the blocked period can't be recovered. If you unblock a bot, it won’t appear in the table again if it hasn’t generated traffic in the past 90 days.
Important: Suspected bot blocking only affects future data collection. The bot table is limited to recent traffic (last 90 days), so some bots won’t appear if they’ve been inactive for longer than 90 days.