Google-Read-Aloud
Google read aloud web crawler bot
About this crawler
Google-Read-Aloud is a web crawler identified by the regular-expression pattern Google-Read-Aloud in the User-Agent request header. It is categorised as search-engine. Use the regex above to detect, log, allow, or block Google-Read-Aloud traffic in your web server, CDN edge rules, or robots.txt.
Block-rate · top 25k sites
0.065%
Technical details
- Name
- Google-Read-Aloud
- Pattern
Google-Read-Aloud- Tags
- search-engine
- Reference
- https://developers.google.com/crawling/docs/crawlers-fetchers/overview-google-crawlers
- Added
- 2023/02/16
- rDNS suffixes
.1e100.net,.googlebot.com,.googleusercontent.com- Instances
- 4 known sample(s)
rDNS verification (FCrDNS)
Verify a request is genuinely Google-Read-Aloud with forward-confirmed reverse DNS: the client IP's PTR record must end in one of the suffixes below and a forward A/AAAA lookup of that hostname must return the same IP. UA strings alone are spoofable; FCrDNS is not.
.1e100.net.googlebot.com.googleusercontent.com
Sample User-Agent strings
Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/138.0.0.0 Mobile Safari/537.36 (compatible; Google-Read-Aloud; +https://support.google.com/webmasters/answer/1061943)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/137.0.0.0 Safari/537.36 (compatible; Google-Read-Aloud; +https://support.google.com/webmasters/answer/1061943)
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/41.0.2272.118 Safari/537.36 (compatible; Google-Read-Aloud; +https://developers.google.com/search/docs/crawling-indexing/overview-google-crawlers)
Mozilla/5.0 (Linux; Android 7.0; SM-G930V Build/NRD90M) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/59.0.3071.125 Mobile Safari/537.36 (compatible; Google-Read-Aloud; +https://developers.google.com/search/docs/crawling-indexing/overview-google-crawlers)
Block this crawler
robots.txt — disallow Google-Read-Aloud:
User-agent: Google-Read-Aloud
Disallow: /
Apache .htaccess — return 403:
RewriteEngine On
RewriteCond %{HTTP_USER_AGENT} Google-Read-Aloud [NC]
RewriteRule .* - [F,L]
Nginx — return 403 inside a server block:
if ($http_user_agent ~* "Google-Read-Aloud") {
return 403;
}
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