Disallow wildcard match in Robots.txt
-
This is in my robots.txt file, does anyone know what this is supposed to accomplish, it doesn't appear to be blocking URLs with question marks
Disallow: /?crawler=1
Disallow: /?mobile=1Thank you
-
This is a good reply.
Everyone gets really confused because Robots.txt has very minor, partial wildcard support and that makes people think that Robots.txt files use Regex, which they do not. Instead of having some weird half and half implementation, it would be much better IMO if the Robots.txt initiative / directive were updated to say "yes, you can use full regular expressions with regards to URL string matching".
Many people are left in a kind of silly guessing game because Google doesn't 'properly' elaborate or invest in expanding the definitions to their currently (publicly) assumed end-game.
People assume that if "*" will match any string of characters, "?" will match any individual character when used in a robots.txt file. This would make sense, but it's not the case. AFAIK there are only one or two supported wildcard characters in Robots.txt and that's why people get confused, looking for escape characters and the suchlike.
-
Hi Amanda,
Those lines tell GoogleBot not to crawl urls that have that text fragments.
For example, wont crawl: domain.com/category/product**?mobile=1**BUT, that doesnt mean that will not crawl every URL with question marks. For that, the line should be like this:
Disallow: /*?I do highly recommend you to read this guides:
About /robots.txt - Official site - Robotstxt.org
Robots.txt - Moz
Robots.txt: the ultimate guide - YOAST
The Complete Guide to Robots.txt - PORTENTHope it helps.
Best luck.
GR
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Blocking pages from Moz and Alexa robots
Hello, We want to block all pages in this directory from Moz and Alexa robots - /slabinventory/search/ Here is an example page - https://www.msisurfaces.com/slabinventory/search/granite/giallo-fiesta/los-angeles-slabs/msi/ Let me know if this is a valid disallow for what I'm trying to. User-agent: ia_archiver
Technical SEO | | Pushm
Disallow: /slabinventory/search/* User-agent: rogerbot
Disallow: /slabinventory/search/* Thanks.0 -
Robots User-agent Query
Am I correct in saying that the allow/disallow is only applied to msnbot_mobile? mobile robots file User-agent: Googlebot-Mobile User-agent: YahooSeeker/M1A1-R2D2 User-agent: MSNBOT_Mobile Allow: / Disallow: /1 Disallow: /2/ Disallow: /3 Disallow: /4/
Technical SEO | | ThomasHarvey1 -
Google is indexing blocked content in robots.txt
Hi,Google is indexing some URLs that i don't want to be indexed and also is indexing the same URLs with https. This URLs are blocked in the file robots.txt.I've tried to block this URLs through Google WebmasterTools but Google doesn't let me do it because this URL are httpsThe file robots.txt is correct so, what can i do to avoid this content to be indexed?
Technical SEO | | elisainteractive0 -
What are your thoughts on security of placing CMS-related folders in a robots.txt file?
So I was just about to add a whole heap of CMS-related folders to my robots.txt file to exclude them from search, and thought "hey, I'm publicly telling people where my admin folders are"...surely that's not right?! Should I leave them out of the robots.txt file, and hope for the best that they never get indexed? Should I use noindex meta data on every page? What are people's thoughts? Thanks, James PS. I know this is similar to lots of other discussions around meta noindex vs. robots.txt, but I'm after specific thoughts around the security aspect of listing your admin folders in a robots.txt file...
Technical SEO | | James-Distinction0 -
Robots.txt blocking site or not?
Here is the robots.txt from a client site. Am I reading this right --
Technical SEO | | 540SEO
that the robots.txt is saying to ignore the entire site, but the
#'s are saying to ignore the robots.txt command? See http://www.robotstxt.org/wc/norobots.html for documentation on how to use the robots.txt file To ban all spiders from the entire site uncomment the next two lines: User-Agent: * Disallow: /0 -
How can I exclude display ads from robots.txt?
Google has stated that you can do this to get spiders to content only, and faster. Our IT guy is saying it's impossible.
Technical SEO | | GregBeddor
Do you know how to exlude display ads from robots.txt? Any help would be much appreciated.0 -
Robots.txt
Hi everyone, I just want to check something. If you have this entered into your robots.txt file: User-agent: *
Technical SEO | | PeterM22
Disallow: /fred/ This wouldn't block /fred-review/ from being crawled would it? Thanks0 -
Search Engine Blocked by Robot Txt warnings for Filter Search result pages--Why?
Hi, We're getting 'Yellow' Search Engine Blocked by Robot Txt warnings for URLS that are in effect product search filter result pages (see link below) on our Magento ecommerce shop. Our Robot txt file to my mind is correctly set up i.e. we would not want Google to index these pages. So why does SeoMoz flag this type of page as a warning? Is there any implication for our ranking? Is there anything we need to do about this? Thanks. Here is an example url that SEOMOZ thinks that the search engines can't see. http://www.site.com/audio-books/audio-books-in-english?audiobook_genre=132 Below are the current entries for the robot.txt file. User-agent: Googlebot
Technical SEO | | languedoc
Disallow: /index.php/
Disallow: /?
Disallow: /.js$
Disallow: /.css$
Disallow: /checkout/
Disallow: /tag/
Disallow: /catalogsearch/
Disallow: /review/
Disallow: /app/
Disallow: /downloader/
Disallow: /js/
Disallow: /lib/
Disallow: /media/
Disallow: /.php$
Disallow: /pkginfo/
Disallow: /report/
Disallow: /skin/
Disallow: /utm
Disallow: /var/
Disallow: /catalog/
Disallow: /customer/
Sitemap:0