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 AI Overviews in Keyword Research
      Moz Pro

      Track AI Overviews in Keyword Research

      Try it free!
    • 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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • 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

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      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. Exact Syntax for Canonical to PDFs for Windows Server

    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.

    Exact Syntax for Canonical to PDFs for Windows Server

    Intermediate & Advanced SEO
    5
    9
    1739
    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.
    • Midleton
      Midleton last edited by

      Hi There,

      I have got in my web several PDFs with the same content of the HTML version. Thus I need to set up a canonical for each of them in order to avoid duplicate content.

      In particular, I need to know how to write the exact syntax for the windows server (web.config) in order to implement the canonical to PDF. I surfed the web but it seems I cannot find this piece of info anywhere

      Thanks a lot!!

      1 Reply Last reply Reply Quote 0
      • AlanMosley
        AlanMosley last edited by

        Thanks Paul

        I had a look at the page, but as I can see it uses headers to identify the response, but the actions are rewrite or redirect. There is a custom response you can use,

        for a definitive answer I would ask on iis.net http://forums.iis.net/

        Or you could place each pdf in its own folder and place the header on the folder

        1 Reply Last reply Reply Quote 0
        • ThompsonPaul
          ThompsonPaul last edited by

          To implement a canonical tag for an individual page/file in IIS, you need to insert a custom response header via an outbound rule in the IIS Rewrite module, not through the web.config.

          Sorry I don't have a specific example handy (haven't had to wrassle with IIS in some time). I'll see if I can dig one up.

          Meanwhile, here's a link to the relevant section of the general Rewrite Module info in case maybe Alan can suggest the specifics.

          Paul

          1 Reply Last reply Reply Quote 0
          • AlanMosley
            AlanMosley @CleverPhD last edited by

            Thanks for finding that, I see it says url, but I cant see how that is actually done. All it does it create a web.config in the folder you choose, I found no way of doing it ofr the indervidual file, unless you have only one file per forder

            here is the web.config, how to test it works?

            <configuration><system.webserver><httpprotocol><customheaders><add name="CononicalUrl" value="Link: http:/domain.com/my.pdf; rel=canonical"></add></customheaders></httpprotocol></system.webserver></configuration>

            1 Reply Last reply Reply Quote 0
            • CleverPhD
              CleverPhD @AlanMosley last edited by

              Not according to this doc:

              http://technet.microsoft.com/en-us/library/cc753812(v=ws.10).aspx

              "Levels

              The procedures for configuring HTTP headers can be performed at the following levels in IIS:

              • Web Server

              • Site

              • Application

              • Physical and virtual directories

              • File (URL)"

              AlanMosley 1 Reply Last reply Reply Quote 0
              • DeanAndrews
                DeanAndrews @AlanMosley last edited by

                My mistake

                1 Reply Last reply Reply Quote 0
                • AlanMosley
                  AlanMosley last edited by

                  I don't think this can be done in web.config. I don't think it can be done at all.

                  while you can add a canonical header, to a folder using IIS, you cant add if to a file.

                  CleverPhD 1 Reply Last reply Reply Quote 0
                  • AlanMosley
                    AlanMosley @DeanAndrews last edited by

                    He's on a windows server and there is no .htaccess, you use web.config.

                    DeanAndrews 1 Reply Last reply Reply Quote 0
                    • DeanAndrews
                      DeanAndrews last edited by

                      Hi, I believe your question is answered here via .htaccess file rather than web.config. Moz blog: How To: Advanced rel="canonical" HTTP Headers

                      AlanMosley 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

                      • shabbirmoosa

                        Rel canonical tag from shopify page to wordpress site page

                        shopify wordpress canonical

                        We have pages on our shopify site example - https://shop.example.com/collections/cast-aluminum-plaques/products/cast-aluminum-address-plaque That we want to put a rel canonical tag on to direct to our wordpress site page - https://www.example.com/aluminum-plaques/ We have links form the wordpress page to the shop page, and over time ahve found that google has ranked the shop pages over the wp pages, which we do not want. So we want to put rel canonical tags on the shop pages to say the wp page is the authority. I hope that makes sense, and I would appreciate your feeback and best solution. Thanks! Is that possible?

                        Intermediate & Advanced SEO | | shabbirmoosa
                        0
                      • techdesign

                        Two Different Domains exact same content

                        Hello, I suspect I know the answer to this but would like to have it confirmed. I have been speaking to a company the last couple of weeks who have 2 domains with the exact same content. Possible a third but they haven't supplied a link. This from all I've read would be a huge problem for ranking and SEO. What would be the best way to deal with this ? I did do a search and found articles/questions on same content on the same site and in articles etc but nothing about exactly the same websites on 2 domains. Cheers David.

                        Intermediate & Advanced SEO | | techdesign
                        0
                      • partnerf

                        Canonical tag - but Title and Description are slightly different

                        I am building a new SEO site with a "Silo" / Themed architecture.  I have a travel website selling hotel reservations.  I list a hotel page under a city page - example, www.abc.com/Dallas/Hilton.html   Then I use that same property under a segment within the city - example www.abc.com/Dallas/Downtown/Hilton.html, so there are two URLs with the same content Both pages are identical, except I want to customize the Title and Description.  I want to customize the title and description to build a consistent theme - for example the /Downtown/Hilton page will have the words "Near Downtown" in the Title and Description, while the primary city Hilton page will not.  So I have two questions about this. First, is it okay to use a canonical tag if the Title and Description are slightly different?  Everything else is identical. If so, will Google crawl and comprehend the unique Title and Description on the "Downtown" silo? I want Google to see that I have several "supporting" pages to my main landing page(s).  I want to present to Google 5 supporting pages in each silo that each has a supporting keyword theme.  But I'm not sure if Google will consider content of pages that point to a different page using the canonical tag. Please see this supporting example:  http://d.pr/i/aQPv Thanks for your insights. Rob

                        Intermediate & Advanced SEO | | partnerf
                        0
                      • SCW

                        Redirect at Registrar or Server

                        Hi folks, I have run into a situation were a new client has 3 TLDs (e.g. mycompany.com, mycompany.org and mycompany.biz), all with the same content. They are on a Windows IIS environment, which I am not familiar with. Until now, all of my clients have been Linux/Apache environment, so I always dealt with these issues utilizing htaccess. Currently all resolve to the same IP, but the URL remains the same in the browser address field (e.g. if you type-in mycompany.org - it remains as such). We want the .org and .biz version to 301 Redirect to the .com TLD. I am wondering what the best practice might be in this situation? Could we simply redirect at the registrar level or would implementation at the server level be best? If so, I would really appreciate an example from someone with experience implementing redirects on IIS. Thank you!

                        Intermediate & Advanced SEO | | SCW
                        0
                      • fablau

                        Are pages with a canonical tag indexed?

                        Hello here, here are my questions for you related to the canonical tag: 1. If I put online a new webpage with a canonical tag pointing to a different page, will this new page be indexed by Google and will I be able to find it in the index? 2. If instead I apply the canonical tag to a page already in the index, will this page be removed from the index? Thank you in advance for any insights! Fabrizio

                        Intermediate & Advanced SEO | | fablau
                        0
                      • WebRiverGroup

                        Should canonical links be included or excluded in a sitemap?

                        Our company is in the process of updating our sitemap. Should we include or exclude canonical links.

                        Intermediate & Advanced SEO | | WebRiverGroup
                        0
                      • imiJoe

                        Does Bing support rel="canonical" HTTP Headers?

                        anyone know^

                        Intermediate & Advanced SEO | | imiJoe
                        0
                      • Jellyfish-Agency

                        Rel=canonical tag on original page?

                        Afternoon All,
                        We are using Concrete5 as our CMS system, we are due to change but for the moment we have to play with what we have got. Part of the C5 system allows us to attribute our main page into other categories, via a page alaiser add-on. But what it also does is create several url paths and duplicate pages depending on how many times we take the original page and reference it in other categories. We have tried C5 canonical/SEO add-on's but they all seem to fall short. We have tried to address this issue in the most efficient way possible by using the rel=canonical tag. The only issue is the limitations of our cms system. We add the canonical tag to the original page header and this will automatically place this tag on all the duplicate pages and in turn fix the problem of duplicate content. The only problem is the canonical tag is on the original page as well, but it is referencing itself, effectively creating a tagging circle. Does anyone foresee a problem with the canonical tag being on the original page but in turn referencing itself? What we have done is try to simplify our duplicate content issues. We have over 2500 duplicate page issues because of this aliasing add-on and want to automate the canonical tag addition, rather than go to each individual page and manually add this tag, so the original reference page can remain the original. We have implemented this tag on one page at the moment with 9 duplicate pages/url's and are monitoring, but was curious if people had experienced this before or had any thoughts?

                        Intermediate & Advanced SEO | | Jellyfish-Agency
                        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 - 2025 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.