Skip to content
    Moz logo Menu open Menu close
    • Products
      • Moz Pro
      • Moz Pro Home
      • Moz Local
      • Moz Local Home
      • STAT
      • Moz API
      • Moz API Home
      • Compare SEO Products
      • Moz Data
    • Free SEO Tools
      • Domain Analysis
      • Keyword Explorer
      • Link Explorer
      • Competitive Research
      • MozBar
      • More Free SEO Tools
    • Learn SEO
      • Beginner's Guide to SEO
      • SEO Learning Center
      • Moz Academy
      • MozCon
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Digital Marketers
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • The Moz Story
      • New Releases
    • Log in
    • Log out
    • Products
      • Moz Pro

        Your all-in-one suite of SEO essentials.

      • Moz Local

        Raise your local SEO visibility with complete local SEO management.

      • STAT

        SERP tracking and analytics for enterprise SEO experts.

      • Moz API

        Power your SEO with our index of over 44 trillion links.

      • Compare SEO Products

        See which Moz SEO solution best meets your business needs.

      • Moz Data

        Power your SEO strategy & AI models with custom data solutions.

      Track your brand’s footprint in AI search
      Moz Pro

      Track your brand’s footprint in AI search

      Learn more
    • Free SEO Tools
      • Domain Analysis

        Get top competitive SEO metrics like DA, top pages and more.

      • Keyword Explorer

        Find traffic-driving keywords with our 1.25 billion+ keyword index.

      • Link Explorer

        Explore over 40 trillion links for powerful backlink data.

      • Competitive Research

        Uncover valuable insights on your organic search competitors.

      • MozBar

        See top SEO metrics for free as you browse the web.

      • More Free SEO Tools

        Explore all the free SEO tools Moz has to offer.

      Let your business shine with Listings AI

      Let your business shine with Listings AI

      Get found
    • Learn SEO
      • Beginner's Guide to SEO

        The #1 most popular introduction to SEO, trusted by millions.

      • SEO Learning Center

        Broaden your knowledge with SEO resources for all skill levels.

      • On-Demand Webinars

        Learn modern SEO best practices from industry experts.

      • How-To Guides

        Step-by-step guides to search success from the authority on SEO.

      • Moz Academy

        Upskill and get certified with on-demand courses & certifications.

      • MozCon

        Save on Early Bird tickets and join us in London or New York City

      Access 20 years of data with flexible pricing
      Moz API

      Access 20 years of data with flexible pricing

      Find your plan
    • Blog
    • Why Moz
      • Digital Marketers

        Simplify SEO tasks to save time and grow your traffic.

      • Small Business Solutions

        Uncover insights to make smarter marketing decisions in less time.

      • Agency Solutions

        Earn & keep valuable clients with unparalleled data & insights.

      • Enterprise Solutions

        Gain a competitive edge in the ever-changing world of search.

      • The Moz Story

        Moz was the first & remains the most trusted SEO company.

      • New Releases

        Get the scoop on the latest and greatest from Moz.

      Surface actionable competitive intel
      New Feature

      Surface actionable competitive intel

      Learn More
    • Log in
      • Moz Pro
      • Moz Local
      • Moz Local Dashboard
      • Moz API
      • Moz API Dashboard
      • Moz Academy
    • Avatar
      • Moz Home
      • Notifications
      • Account & Billing
      • Manage Users
      • Community Profile
      • My Q&A
      • My Videos
      • Log Out

    The Moz Q&A Forum

    • Forum
    • Questions
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. Home
    2. SEO Tactics
    3. Intermediate & Advanced SEO
    4. Block session id URLs with robots.txt

    Moz Q&A is closed.

    After more than 13 years, and tens of thousands of questions, Moz Q&A closed on 12th December 2024. Whilst we’re not completely removing the content - many posts will still be possible to view - we have locked both new posts and new replies. More details here.

    Block session id URLs with robots.txt

    Intermediate & Advanced SEO
    3
    4
    947
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • Mat_C
      Mat_C Subscriber last edited by

      Hi,

      I would like to block all URLs with the parameter '?filter=' from being crawled by including them in the robots.txt.

      Which directive should I use:

      User-agent: *
      Disallow: ?filter=

      or

      User-agent: *
      Disallow: /?filter=

      In other words, is the forward slash in the beginning of the disallow directive necessary?

      Thanks!

      1 Reply Last reply Reply Quote 1
      • Mat_C
        Mat_C Subscriber @Martijn_Scheijbeler last edited by

        Hi Martijn,

        Thanks for the answer. Regarding the forward slash in the beginning, is it necessary to use this?

        In the robots text from Zalando for example, you can see that they don't use it for a lot of filters.

        1 Reply Last reply Reply Quote 0
        • Martijn_Scheijbeler
          Martijn_Scheijbeler @jasongmcmahon last edited by

          Uhh, that's not what the requester is looking for and could actually cause tons of problems if you would apply this on a site that you're unaware of. I would always go with the most limiting robots.txt that you can and in this case, I would go with: /?filter=

          Mat_C 1 Reply Last reply Reply Quote 1
          • jasongmcmahon
            jasongmcmahon last edited by

            Hi,

            The following should suffice as it will black any URL with a "?" in it

            User-agent: *
            Disallow: /*?
            
            Martijn_Scheijbeler 1 Reply Last reply Reply Quote 0
            • 1 / 1
            • First post
              Last post

            Got a burning SEO question?

            Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


            Start my free trial


            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.

            • See all categories

            Related Questions

            • Kingalan1

              Will Reduced Bounce Rate, Increased Pages/Session, Increased Session Duration-RESULT IN BETTER RANKING?

              Our relaunched website has a much lower bounce rate (66% before, now 58%) increased pages per session (1.89 before, now 3.47) and increased session duration (1:33 before, now 3:47). The relaunch was December 20th. Should these improvements result in an improvement in Google rank? How about in MOZ authority? We have not significantly changed the content of the site but the UX has been greatly improved. Thanks, Alan

              Intermediate & Advanced SEO | | Kingalan1
              1
            • jamiegriz

              SEO Best Practices regarding Robots.txt disallow

              I cannot find hard and fast direction about the following issue: It looks like the Robots.txt file on my server has been set up to disallow "account" and "search" pages within my site, so I am receiving warnings from the Google Search console that URLs are being blocked by Robots.txt. (Disallow: /Account/ and Disallow: /?search=). Do you recommend unblocking these URLs? I'm getting a warning that over 18,000 Urls are blocked by robots.txt. ("Sitemap contains urls which are blocked by robots.txt"). Seems that I wouldn't want that many urls blocked. ? Thank you!!

              Intermediate & Advanced SEO | | jamiegriz
              0
            • alexrbrg

              URL in russian

              Hi everyone, I am doing an audit of a site that currently have a lot of 500 errors due to the russian langage. Basically, all the url's look that way for every page in russian: http://www.exemple.com/ru-kg/pешения-для/food-packaging-machines/
              http://www.exemple.com/ru-kg/pешения-для/wood-flour-solutions/
              http://www.exemple.com/ru-kg/pешения-для/cellulose-solutions/ I am wondering if this error is really caused by the server or if Google have difficulty reading the russian langage in URL's. Is it better to have the URL's only in english ?

              Intermediate & Advanced SEO | | alexrbrg
              0
            • fablau

              Robots.txt: how to exclude sub-directories correctly?

              Hello here, I am trying to figure out the correct way to tell SEs to crawls this: http://www.mysite.com/directory/ But not this: http://www.mysite.com/directory/sub-directory/ or this: http://www.mysite.com/directory/sub-directory2/sub-directory/... But with the fact I have thousands of sub-directories with almost infinite combinations, I can't put the following definitions in a manageable way: disallow: /directory/sub-directory/ disallow: /directory/sub-directory2/ disallow: /directory/sub-directory/sub-directory/ disallow: /directory/sub-directory2/subdirectory/ etc... I would end up having thousands of definitions to disallow all the possible sub-directory combinations. So, is the following way a correct, better and shorter way to define what I want above: allow: /directory/$ disallow: /directory/* Would the above work? Any thoughts are very welcome! Thank you in advance. Best, Fab.

              Intermediate & Advanced SEO | | fablau
              1
            • JohnPeters

              Crazy long weird URLs... help

              I have a HTML website, mysite1.com, and I placed a link on the home page to another one of my sites, mysite2.com Today I checked the links to mysite2.com in Majestic and noticed 24 links coming from the mysite1.com instead of just one link. The URLs from mysite1.com that are showing in Majestic are like this mysite1.com/?epl=4donafvFK3fMXxZXMWQRQLodmPchoXCK5C7-kbBv_agkwlkJrZAoaSDVUlhqFmUqt0f8c2Q6jF6GO6DNMnbidqRsikriF-IEBEt5okmICLEB0FxP36GrsxoPGQ3SGBo1PVR7itDUA4CYmjypn5gi mysite1.com,was inherited from a friend and I believe that it was originally built in Frontpage. Can you tell me how I can get rid of these multiple links as I only want 1 showing from the home page Thanks in advance

              Intermediate & Advanced SEO | | JohnPeters
              0
            • Deepti_C

              Google News URL Structure

              Hi there folks I am looking for some guidance on Google News URLs. We are restructuring the site. A main traffic driver will be the traffic we get from Google News. Most large publishers use: www.site.com/news/12345/this-is-the-title/ Others use www.example.com/news/celebrity/12345/this-is-the-title/ etc. www.example.com/news/celebrity-news/12345/this-is-the-title/ www.example.com/celebrity-news/12345/this-is-the-title/ (Celebrity is a channel on Google News so should we try and follow that format?) www.example.com/news/celebrity-news/this-is-the-title/12345/ www.example.com/news/celebrity-news/this-is-the-title-12345/ (unique ID no at the end and part of the title URL) www.example.com/news/celebrity-news/celebrity-name/this-is-the-title-12345/ Others include the date. So as you can see there are so many combinations and there doesnt seem to be any unity across news sites for this format. Have you any advice on how to structure these URLs? Particularly if we want to been seen as an authority on the following topics: fashion, hair, beauty, and celebrity news - in particular "celebrity name" So should the celebrity news section be www.example.com/news/celebrity-news/celebrity-name/this-is-the-title-12345/ or what? This is for a completely new site build. Thanks Barry

              Intermediate & Advanced SEO | | Deepti_C
              0
            • 379seo

              Canonical URLs and Sitemaps

              We are using canonical link tags for product pages in a scenario where the URLs on the site contain category names, and the canonical URL points to a URL which does not contain the category names.  So, the product page on the site is like www.example.com/clothes/skirts/skater-skirt-12345, and also like www.example.com/sale/clearance/skater-skirt-12345 in another category.  And on both of these pages, the canonical link tag references a 3rd URL like www.example.com/skater-skirt-12345.  This 3rd URL, used in the canonical link tag is a valid page, and displays the same content as the other two versions, but there are no actual links to this generic version anywhere on the site (nor external). Questions: 1. Does the generic URL referenced in the canonical link also need to be included as on-page links somewhere in the crawled navigation of the site, or is it okay to be just a valid URL not linked anywhere except for the canonical tags? 2. In our sitemap, is it okay to reference the non-canonical URLs, or does the sitemap have to reference only the canonical URL?  In our case, the sitemap points to yet a 3rd variation of the URL, like www.example.com/product.jsp?productID=12345.  This page retrieves the same content as the others, and includes a canonical link tag back to www.example.com/skater-skirt-12345.  Is this a valid approach, or should we revise the sitemap to point to either the category-specific links or the canonical links?

              Intermediate & Advanced SEO | | 379seo
              0
            • HD_Leona

              Blocking Pages Via Robots, Can Images On Those Pages Be Included In Image Search

              Hi! I have pages within my forum where visitors can upload photos.  When they upload photos they provide a simple statement about the photo but no real information about the image,definitely not enough for the page to be deemed worthy of being indexed.  The industry however is one that really leans on images and having the images in Google Image search is important to us. The url structure is like such:  domain.com/community/photos/~username~/picture111111.aspx I wish to block the whole folder from Googlebot to prevent these low quality pages from being added to Google's main SERP results.  This would be something like this: User-agent: googlebot Disallow: /community/photos/ Can  I disallow Googlebot specifically rather than just using User-agent:  * which would then allow googlebot-image to pick up the photos?  I plan on configuring a way to add meaningful alt attributes and image names to assist in visibility, but the actual act of blocking the pages and getting the images picked up... Is this possible? Thanks! Leona

              Intermediate & Advanced SEO | | HD_Leona
              0

            Get started with Moz Pro!

            Unlock the power of advanced SEO tools and data-driven insights.

            Start my free trial
            Products
            • Moz Pro
            • Moz Local
            • Moz API
            • Moz Data
            • STAT
            • Product Updates
            Moz Solutions
            • SMB Solutions
            • Agency Solutions
            • Enterprise Solutions
            • Digital Marketers
            Free SEO Tools
            • Domain Authority Checker
            • Link Explorer
            • Keyword Explorer
            • Competitive Research
            • Brand Authority Checker
            • Local Citation Checker
            • MozBar Extension
            • MozCast
            Resources
            • Blog
            • SEO Learning Center
            • Help Hub
            • Beginner's Guide to SEO
            • How-to Guides
            • Moz Academy
            • API Docs
            About Moz
            • About
            • Team
            • Careers
            • Contact
            Why Moz
            • Case Studies
            • Testimonials
            Get Involved
            • Become an Affiliate
            • MozCon
            • Webinars
            • Practical Marketer Series
            • MozPod
            Connect with us

            Contact the Help team

            Join our newsletter
            Moz logo
            © 2021 - 2026 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
            • Accessibility
            • Terms of Use
            • Privacy

            Looks like your connection to Moz was lost, please wait while we try to reconnect.