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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      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.

      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. Lazy Loading of products on an E-Commerce Website - Options Needed

    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.

    Lazy Loading of products on an E-Commerce Website - Options Needed

    Intermediate & Advanced SEO
    2
    4
    2639
    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.
    • JBGlobalSEO
      JBGlobalSEO last edited by

      Hi Moz Fans.

      We are in the process of re-designing our product pages and we need to improve the page load speed.

      Our developers have suggested that we load the associated products on the page using Lazy Loading, While I understand this will certainly have a positive impact on the page load speed I am concerned on the SEO impact.

      We can have upwards of 50 associated products on a page so need a solution.

      So far I have found the following solution online which uses Lazy Loading and Escaped Fragments - The concern here is from serving an alternate version to search engines.

      The solution was developed by Google not only for lazy loading, but for indexing AJAX contents in general.
      Here's the official page: Making AJAX Applications Crawlable.

      The documentation is simple and clear, but in a few words the solution is to use slightly modified URL fragments.
      A fragment is the last part of the URL, prefixed by #. Fragments are not propagated to the server, they are used only on the client side to tell the browser to show something, usually to move to a in-page bookmark.
      If instead of using # as the prefix, you use #!, this instructs Google to ask the server for a special version of your page using an ugly URL. When the server receives this ugly request, it's your responsibility to send back a static version of the page that renders an HTML snapshot (the not indexed image in our case).

      It seems complicated but it is not, let's use our gallery as an example.

      1. Every gallery thumbnail has to have an hyperlink like:  http://www.idea-r.it/...#!blogimage=<image-number></image-number>
      2. When the crawler will find this markup will change it to
        http://www.idea-r.it/...?_escaped_fragment_=blogimage=<image-number></image-number>

      Let's take a look at what you have to answer on the server side to provide a valid HTML snapshot.
      My implementation uses ASP.NET, but any server technology will be good.

      var fragment = Request.QueryString[``"_escaped_fragment_"``];``if (!String.IsNullOrEmpty(fragment))``{``var escapedParams = fragment.Split(``new``[] { ``'=' });``if (escapedParams.Length == 2)``{``var imageToDisplay = escapedParams[1];``// Render the page with the gallery showing ``// the requested image (statically!)``...``}``}

      What's rendered is an HTML snapshot, that is a static version of the gallery already positioned on the requested image (server side).
      To make it perfect we have to give the user a chance to bookmark the current gallery image.
      90% comes for free, we have only to parse the fragment on the client side and show the requested image

      if (window.location.hash)``{``// NOTE: remove initial #``var fragmentParams = window.location.hash.substring(1).split(``'='``);``var imageToDisplay = fragmentParams[1]``// Render the page with the gallery showing the requested image (dynamically!)``...``}

      The other option would be to look at a recommendation engine to show a small selection of related products instead. This would cut the total number of related products down. The concern with this one is we are removing a massive chunk of content from he existing pages, Some is not the most relevant but its content.

      Any advice and discussion welcome 🙂

      1 Reply Last reply Reply Quote 0
      • Tom-Anthony
        Tom-Anthony @JBGlobalSEO last edited by

        Ok, cool. To reiterate - with escaped_fragment you are just serving the same content in a tweaked format and Google recommend it rather than frown upon it. Good to be sure though.

        See you at SearchLove! 🙂

        1 Reply Last reply Reply Quote 2
        • JBGlobalSEO
          JBGlobalSEO last edited by

          Hi Tom, Thank you for the response,

          The concern about serving an alt version is that it would be frowned up from a SEO perspective and may lead to a form of penalty.

          I agree that escaped_fragment would be the best approach and just wanted to satisfy my own concerns before I get them working on this.

          Thank you and see you at Search Love 🙂

          Tom-Anthony 1 Reply Last reply Reply Quote 0
          • Tom-Anthony
            Tom-Anthony last edited by

            Hi,

            I am not sure I follow your concerns around serving an alternative version of the page to search engines - is that concern based on concerns it will be frowned upon or technical concerns?

            Using the escaped_fragment methodology would work for your purposes, and would be the best approach. If you have technical concerns around creating the HTML snapshots you could look at a service such as https://prerender.io/ which helps manage this process.

            If that doesn't answer your question, please give more information so we can understand more specifically where you concerns are. 🙂

            1 Reply Last reply Reply Quote 1
            • 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

            • bedynamic

              SEO on dynamic website

              Hi. I am hoping you can advise. I have a client in one of my training groups and their site is a golf booking engine where all pages are dynamically created based on parameters used in their website search. They want to know what is the best thing to do for SEO. They have some landing pages that Google can see but there is only a small bit of text at the top and the rest of the page is dynamically created. I have advised that they should create landing pages for each of their locations and clubs and use canonicals to handle what Google indexes.Is this the right advice or should they noindex? Thanks S

              Intermediate & Advanced SEO | | bedynamic
              0
            • binhlai

              If my website do not have a robot.txt file, does it hurt my website ranking?

              After a site audit, I find out that my website don't have a robot.txt. Does it hurt my website rankings? One more thing, when I type mywebsite.com/robot.txt, it automatically redirect to the homepage. Please help!

              Intermediate & Advanced SEO | | binhlai
              0
            • seoman10

              Check website update frequency?

              Is the tools out there that can check our frequently website is updated with new content products? I'm trying to do an SEO analysis between two websites. Thanks in advance Richard

              Intermediate & Advanced SEO | | seoman10
              0
            • birchlore

              Shopify Product Variants vs Separate Product Pages

              Let's say I have 10 different models of hats, and each hat has 5 colors. I have two routes I could take: a) Make 50 separate product pages Pros: -Better usability for customer because they can shop for just masks of a specific color. We can sort our collections to only show our red hats. -Help SEO with specific kw title pages (red boston bruins hat vs boston bruins hat). Cons: -Duplicate Content: Hat model in one color will have almost identical description as the same hat in a different color (from a usability and consistency standpoint, we'd want to leave descriptions the same for identical products, switching out only the color) b) Have 10 products listed, each with 5 color variants Pros: -More elegant and organized -NO duplicate Content Cons: -Losing out on color specific search terms -Customer might look at our 'red hats' collection, but shopify will only show the 'default' image of the hat, which could be another color. That's not ideal for usability/conversions. Not sure which route to take. I'm sure other vendors must have faced this issue before. What are your thoughts?

              Intermediate & Advanced SEO | | birchlore
              0
            • bloomnation

              DNS or 301 Website Redirect

              We are running a marketplace site, so we have thousands of vendors selling their products on our site. Each vendor has a Profile page and we are soon to launch a premium store-front that is white label. Many of these vendors will want to point a custom url to their premium store-front (which is a sub domain of the marketplace) and we are trying to get an understanding of how we should instruct them to point their url in a way that will give the main marketplace site the seo juice. We also want to understand what will show up in the address bar.  Will it be their url or our sub domain? Will any of the marketplace seo juice boost their url local listing status?

              Intermediate & Advanced SEO | | bloomnation
              0
            • seo22

              [e-commerce] Should I index product variants?

              Hi guys, I have e-commerce site, that sells car tires. I was wondering would I benefit from making all Product Variants ( for example each tire size ) as different page, that has link to the main product to provide some affiliation, or should I make each variant noindex, and add rel=canonical to the main product. The benefits from having each variant indexed can be many: greater click through rate more relative results for customers etc. But I'm not sure how to handle the duplicate content issue ( in this case, only the title, URL and H1 can be different ). Regards.

              Intermediate & Advanced SEO | | seo22
              0
            • neooptic

              Deferred javascript loading

              Hi! This follows on from my last question. I'm trying to improve the page load speed for http://www.gear-zone.co.uk/. Currently, Google rate the page speed of the GZ site at 91/100 – with the javascript being the only place where points are being deducated. The only problem is, the JS relates to the trustpilot widget, and social links at the bottom of the page – neither of which work when they are deferred. Normally, we would add the defer attribute to the script tags, but by doing so it waits until the page is fully loaded before executing the scripts. As both the js I mentioned (reviews and buttons) use the document.Write command, adding this would write the code off the page and out of placement from where they should be. Anyone have any ideas?

              Intermediate & Advanced SEO | | neooptic
              0
            • AndrewY

              Max # of Products / Links per Page on E-Commerce Site

              We are getting ready to re-launch our e-commerce site and are trying to decide how many products to list per category page.  Some of of our category pages have upwards of 100 products.  While I'd love to list ALL the products on the root category page (to reduce hassle for customer, to index more products on a higher PR page), I'm a little worried about having it be too long, and containing too many on-page links. Would love some guidance on: Maximum number of internal links on a page If Google frowns on really long category pages Anything else I should be considering when making this decision Thanks for your input!

              Intermediate & Advanced SEO | | AndrewY
              2

            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
            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.