• BBgmoro

        See all notifications

        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.

          Turn SEO data into actionable content briefs

          Turn SEO data into actionable content briefs

          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
        • My Q&A
        • 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. Technical SEO
        4. Missing Canonical Tag for a PDF document

        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.

        Missing Canonical Tag for a PDF document

        Technical SEO
        canonical
        4
        5
        3148
        Loading More Posts
        • Watching

          Notify me of new replies.
          Show question in unread.

        • Not Watching

          Do not notify me of new replies.
          Show question in unread if category is not ignored.

        • Ignoring

          Do not notify me of new replies.
          Do not show question in unread.

        • Oldest to Newest
        • Newest to Oldest
        • Most Votes
        Reply
        • Reply as question
        Locked
        This topic has been deleted. Only users with question management privileges can see it.
        • ahmadmdahshan
          ahmadmdahshan Subscriber last edited by

          Error: Missing Canonical Tag
          But URL is not a webpage it is a PDF document, is this fixable?

          Tom.Capper 1 Reply Last reply Reply Quote 0
          • equipmentmanual
            equipmentmanual @Adnan-farooq last edited by

            @Adnan-farooq said in Missing Canonical Tag for a PDF document:

            i don't think that we used canonical tag for PDF document i think no option is visible on moz 👎

            Hitachi Workshop Manual Instant Download PDF at your fingertips. Access valuable resources for quick and efficient equipment maintenance and operation. Don't miss out on this essential source for Hitachi machinery enthusiasts.

            1 Reply Last reply Reply Quote 0
            • equipmentmanual
              equipmentmanual @Adnan-farooq last edited by

              Hitachi Workshop Manual Instant Download PDF at your fingertips. Access valuable resources for quick and efficient equipment maintenance and operation. Don't miss out on this essential source for Hitachi machinery enthusiasts.

              1 Reply Last reply Reply Quote 0
              • Adnan-farooq
                Adnan-farooq last edited by

                i don't think that we used canonical tag for PDF document i think no option is visible on moz 👎

                equipmentmanual 2 Replies Last reply Reply Quote 0
                • Tom.Capper
                  Tom.Capper Subject Expert @ahmadmdahshan last edited by

                  @ahmadmdahshan

                  There's two answers to this.

                  One is that whilst it's best practice for all URLs to have a canonical (even if it's self-referencing), if this resource has no duplicates, it's not mandatory.

                  The other is that yes, you can add a canonical tag to a web page. You'd have to do it at the HTTP header level.

                  https://developers.google.com/search/docs/crawling-indexing/consolidate-duplicate-urls#rel-canonical-header-method

                  1 Reply Last reply Reply Quote 0
                  • 1 / 1
                  • First post
                    Last post

                  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

                  • Alex_Pisa

                    "Duplicate without user-selected canonical” - impact to SERPs

                    canonical international seo

                    Hello, we are facing some issues on our project and we would like to get some advice. Scenario
                    We run several websites (www.brandName.com, www.brandName.be, www.brandName.ch, etc..) all in French language . All sites have nearly the same content & structure, only minor text (some headings and phone numbers due to different countries are different). There are many good quality pages, but again they are the same over all domains. Goal
                    We want local domains (be, ch, fr, etc.) to appear in SERPs and also comply with Google policy of local language variants and/or canonical links. Current solution
                    Currently we don’t use canonicals, instead we use rel="alternate" hreflang="x-default": <link rel="alternate" hreflang="fr-BE" href="https://www.brandName.be/" /> <link rel="alternate" hreflang="fr-CA" href="https://www.brandName.ca/" /> <link rel="alternate" hreflang="fr-CH" href="https://www.brandName.ch/" /> <link rel="alternate" hreflang="fr-FR" href="https://www.brandName.fr/" /> <link rel="alternate" hreflang="fr-LU" href="https://www.brandName.lu/" /> <link rel="alternate" hreflang="x-default" href="https://www.brandName.com/" /> Issue
                    After Googlebot crawled the websites we see lot of “Duplicate without user-selected canonical” in Coverage/Excluded report (Google Search Console) for most domains. When we inspect some of those URLs we can see Google has decided that canonical URL points to (example): User-declared canonical: None
                    Google-selected canonical: …same page, but on a different domain Strange is that even those URLs are on Google and can be found in SERPs. Obviously Google doesn’t know what to make of it. We noticed many websites in the same scenario use a self-referencing approach which is not really “kosher” - we are afraid if we use the same approach we can get penalized by Google. Question: What do you suggest to fix the “Duplicate without user-selected canonical” in our scenario? Any suggestions/ideas appreciated, thanks. Regards.

                    International SEO | | Alex_Pisa
                    0
                  • IrvCo_Interactive

                    What could cause Google to not honor canonical URLs?

                    I have a strange situation on a website, when I do a Google query of site:example.com all the top indexed results appear to be queries that users can perform on the website. So any random term the user searches for on the website for some reason is causing the search result page to get indexed - like example.com/search/query/random-keywords However, the search results page has a canonical tag on it that points to example.com/search, but that doesn't seem to be doing anything. Any thoughts or ideas why this could be happening?

                    Technical SEO | | IrvCo_Interactive
                    0
                  • ASKHANUMANTHAILAND

                    Duplicate title while setting canonical tag.

                    Hi Moz Fan, My websites - https://finance.rabbit.co.th/ has run financial service, So our main keywords is about "Insurance" in Thai, But today I have an issues regarding to carnonical tag. We have a link that containing by https://finance.rabbit.co.th/car-insurance?showForm=1&brand_id=9&model_id=18&car_submodel_id=30&ci_source_id=rabbit.co.th&car_year=2014 and setting canonical to this url - https://finance.rabbit.co.th/car-insurance within 5,000 items. But in this case I have an warning by site audit tools as Duplicate Page Title (Canonical), So is that possible to drop our ranking. What should we do, setting No-Index, No-Follow for all URL that begin with ? or keep them like that.

                    Technical SEO | | ASKHANUMANTHAILAND
                    0
                  • Dynata_panel_marketing

                    Bing webmaster tools incorrectly showing missing title and description tags

                    Hey all, Was wondering if anyone else has come across this issue. Bing is showing title and description tags missing in the head of my wordpress blog. I can't seem to find any documentation on this. Thanks, Roman

                    Technical SEO | | Dynata_panel_marketing
                    0
                  • aj613

                    Do H2 tags carry more weight than h4 tags?

                    Of course H tags are key signals for relevance in search.  Does an h2 tag send a significantly "louder" signal than an h4 tag?

                    Technical SEO | | aj613
                    0
                  • JohnHuynh

                    Miss meta description on 404 page

                    Hi, My 404 page did not have meta description. Is it an error? Because I run report and seomoz said that a problem. Thanks!

                    Technical SEO | | JohnHuynh
                    0
                  • ZiaTG

                    Should H1 tags include location?

                    I have an IT services company that is based out of Denver. In the past I always used Denver in the H1 tag like this "Denver IT Support & Managed Services" or "Denver Data Center Solutions" I know that H tags are not that important any more but I still want to put them on each page. My question is in a post panda world do those look too spammy? Should I not include Denver on each page. I have about 25 service pages that I was going to do this for. Each page will be different because of the service but I was going to include Denver on each page. On that same note how, I normally put never in the title for each page. Should I rethink this also? Obvisouly I want to rank on Denver and the service. Any help on this would be great. Thanks

                    Technical SEO | | ZiaTG
                    0
                  • zazo

                    How to tell if PDF content is being indexed?

                    I've searched extensively for this, but could not find a definitive answer. We recently updated our website and it contains links to about 30 PDF data sheets. I want to determine if the text from these PDFs is being archived by search engines. When I do this search http://bit.ly/rRYJPe  (google - site:www.gamma-sci.com and filetype:pdf) I can see that the PDF urls are getting indexed, but does that mean that their content is getting indexed? I have read in other posts/places that if you can copy text from a PDF and paste it that means Google can index the content.  When I try this with PDFs from our site I cannot copy text, but I was told that these PDFs were all created from Word docs, so they should be indexable, correct? Since WordPress has you upload PDFs like they are an image could this be causing the problem? Would it make sense to take the time and extract all of the PDF content to html? Thanks for any assistance, this has been driving me crazy.

                    Technical SEO | | zazo
                    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.