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When Google Wireless Transcoder (GWT, Googlebot-mobile) translate your website it strip all “scripts” and render it in mobile format (XHTML mobile 1.0)Google version of “Mobile format”. To test this services go to http://google.com/gwt/n. GWT services is actually made for mobile-user but you can still surf with normal browser.So what the heck wrong with it
The answer is Yes & No. This type of services is bad for webmaster that depend on ads income. Otherwise Normal Surfer would love this services as they wont need to view any ads and surf safely without “javascript embed” (from the originating website).
How to Block Googlebot Mobile Crawler
These are some server environment variables for Google Wireless Transcoder
- USER_AGENT
- Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; Google Wireless Transcoder;)
- HTTP_VIA
- 1.1 proxy.google.com:80 (squid)
- HTTP_X_FORWARDED_FOR
- xxx.xx.xxx.xxx, unknown
- REMOTE_ADDR
- 209.85.138.136
- REMOTE_PORT
- 56931
block via .htaccess
with mod_setenvif
<IfModule mod_setenvif.c> SetEnvIfNoCase User-Agent "^Google\ Wireless\ Transcoder*" gwt_agent=1 SetEnvIfNoCase User-Agent "^Googlebot-Mobile*" gwt_agent=1 <FilesMatch "(.*)"> Order Allow,Deny Allow from all Deny from env=gwt_agent </FilesMatch> </IfModule>
or with mod_rewrite
<IfModule mod_rewrite.c> RewriteEngine On RewriteCond %{HTTP_USER_AGENT} ^Google\ Wireless\ Transcoder [OR] RewriteCond %{HTTP_USER_AGENT} ^Googlebot-Mobile RewriteRule ^.* - [F,L] </IfModule>Robots Exclusion Standards
User-agent: Googlebot-Mobile Disallow: /
Google Webmaster Analyze robots.txt
After you add the above robot.txt code login to your Google Webmaster Central.
- Select Tools > Analyze robots.txt
- Select Google Mobile : Crawls page for our mobile index on “user-agents dropdown list”.
Embed HTML Meta Link header
<link rel="alternate" media="handheld" href="http://changethis-url-for-mobile-user" />
Google Support
If you want to prevent Google Mobile services from transcoding your page its recommended to request for removal via Google Mobile Support form.
Soap
If google-mobile can restrict this services for mobile only view or maybe implement something like “duggmirror” for normal browsing, it would be welcome.
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- December 29, 2007 at 7:11 am
- June 24, 2008 at 4:43 pm
- 0.3
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3 Responses to “How to block Google Wireless Transcoder”
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[...] Some people clearly don’t like it. I can imagine it making the odd designer cry too, especially if they lavished time on a handheld stylesheet. [...]
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- 1 pingback(s) þ chetamahori.wordpress.com on WordPress MU
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[...] Wyjaśnieniem może być tu post Key_Master’a, który twierdzi, że winowajcą całego zamieszania jest googlebot-mobile. Jeżeli napotka on przekierowanie typu 301 myli je z błędem 404 (z przyczyn bliżej nieznanych). Błąd ten występuje do momentu odwiedzin oryginalnego googlebota, co wyjaśniałoby sytuację powrotu utraconych pozycji. Można więc się pokusić o zblokowanie googlebot-mobile. Jak można to zrobić opisuje to artykuł How to block Google Wireless Transcoder. [...]
Google translate: 404 Errors in Webmaster Tools
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- 1 pingback(s) þ www.skuteczneseo.pl on WordPress 2.3.2
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"write as if you were talking to a good friend (in front of your mother)."
.haveyoursay
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Yours is a very informative post, thanks.