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. High resolution (retina) images vs load time

    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.

    High resolution (retina) images vs load time

    Intermediate & Advanced SEO
    3
    6
    3080
    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.
    • deelo555
      deelo555 last edited by

      I have an ecommerce website and have a product slider with 3 images.

      Currently, I serve them at the native size when viewed on a desktop browser (374x374).

      I would like to serve them using retina image quality (748px).

      However how will this affect my ranking due to load time?

      Does Google take into account image load times even though these are done asynchronously? Also as its a slider, its only the first image which needs to load. Do the other images contribute at all to the page load time?

      1 Reply Last reply Reply Quote 1
      • deelo555
        deelo555 @mathamatix last edited by

        "Large pictures tend to be bad for user experience."

        I disagree. I think what you mean is slower loading is bad for the user experience. Higher quality pictures are better for the user experience.

        I've been looking into deferring loading of the additional slider images. That should definitely improve load time as all the bandwidth can be used to download the first slider image.

        Also the first slider image if you use a progressive format should show something quickly and then improve over time.

        1 Reply Last reply Reply Quote 0
        • mathamatix
          mathamatix Subscriber @deelo555 last edited by

          You also have to keep in mind that users will access your site from mobile devices and that the larger the page the longer it takes to load fully. You may lose some people during the time it takes to load the page. My website used to have a slider with three images. i removed the slider and replaced it with one static image. Large pictures tend to be bad for user experience.

          deelo555 1 Reply Last reply Reply Quote 0
          • Marcus_Miller
            Marcus_Miller last edited by

            Hey Dwayne

            They are big images but from experience I have never seen a meaningful impact from these kind of changes (in around 15 years). Maybe work on optimising the images themselves as best as possible to bring the overall size down as much as possible. Sure, if your site is a slow loading nightmare and this is just the final straw then it may be an issue but by the sounds of it you are already taking that into consideration and your site is well hosted and performs better than most of everything else out there.

            But, as ever in this game, my advice would be to be aware of possible implications, weigh up the pros and cons and then test extensively. If you see an impact in your loading time and search results (and more importantly in user interaction, bounce etc) after changing this one factor then you know you can roll it back.

            Hope that helps

            Marcus

            1 Reply Last reply Reply Quote 0
            • deelo555
              deelo555 @Marcus_Miller last edited by

              Hi,

              Its not that small a change...the size of each image will quadruple from around 10kb to 40kb. As there are three images thats 90kb more data. Which is around 20% of the total page size.

              That's interesting what you mention about the first byte load time. I would have thought that was overly simple and would definitely have assumed Google would actually be more concerned with how long it takes for the page "to load" (e.g. using their pagespeed metrics).

              I've optimized my site extensively and have pagespeed score of 95% and I use the amazon AWS servers.

              I agree with your idea about doing what's right for my users. But if Google includes the image load time then my site will rank poorly and then I won't have any users!

              In summary, I think what this question really comes down to is how does Google calculate page load times and does this include image load time and does it include load time for all images (even ones which aren't being rendered in the slider).

              Thanks,

              Dwayne

              mathamatix 1 Reply Last reply Reply Quote 0
              • Marcus_Miller
                Marcus_Miller last edited by

                Hey

                I think this is such a small issue overall that you should not worry about a slight increase in image sizes damaging your SEO (assuming everything else is in place).

                I would ask myself the questions:

                • Is this better for my site users?
                • does the seriously impact load times (and therefore usability / user experience)?

                If you believe it creates a better experience and does not impact loading times in a meaningful way then go for it and don't worry about a likely negligible impact on loading times.

                A few things I would do:

                • test average loading times with a tool like pingdom: http://tools.pingdom.com/fpt/
                • replace your images and test again
                • look at other areas where you can speed up loading times
                • make sure your hosting does not suck

                For reference there was a post here a while back re the whole loading times / SEO angle that determined it was time to first byte (response time) rather than total loading time that had the impact - this would make total loading time academic from a pure SEO perspective but... it's really not about SEO, it's about your site users and whether this makes things better (improved images) or worse (slow loading) for them.

                Seriously - don't worry about this small change too much from an SEO perspective. Use it as an excuse to improve loading time as that is a good exercise for lots of reasons but go with what is right for your users.

                Hope that helps
                Marcus

                Ref
                http://moz.com/blog/how-website-speed-actually-impacts-search-ranking

                http://moz.com/blog/improving-search-rank-by-optimizing-your-time-to-first-byte

                deelo555 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

                • snj_cerkez

                  Bulk reverse image search?

                  Hi, i have a couple fashion clients who have very active blogs and post lots of fashion content and images. Like 50+ images weekly. I want to check if these images have been used by other sources in bulk, are there any good reverse image search tools which can do this? Or any recommended ways to efficiently do this for a large number of images? Cheers

                  Intermediate & Advanced SEO | | snj_cerkez
                  0
                • Victoria_

                  Lazy Loading of Blog Posts and Crawl Depths

                  Hi Moz Fans, We are looking at our blog and improving the content as much as we can for SEO purposes, but we have hit a bit of a blank in terms of lazy loading implications and issues with crawl depths. We introduced lazy loading onto the blog home page to increase site speed initially and it works well with infinite scroll, but we were wondering whether this would cause any issues regarding SEO. A lot of the resources online seem to be conflicting and some are very outdated, so some clarification on what is best in terms of lazy loading and crawl depths for blogs, would be fantastic! I hope someone can help and give us some up to date insights - If you need anymore information, I'll reply ASAP

                  Intermediate & Advanced SEO | | Victoria_
                  0
                • alphonseha

                  Google not Indexing images on CDN.

                  My URL is: http://bit.ly/1H2TArH We have set up a CDN on our own domain: http://bit.ly/292GkZC  We have an image sitemap: http://bit.ly/29ca5s3 The image sitemap uses the CDN URLs. We verified the CDN subdomain in GWT. The robots.txt does not restrict any of the photos: http://bit.ly/29eNSXv. We used to have a disallow to /thumb/ which had a 301 redirect to our CDN but we removed both the disallow in the robots.txt as well as the 301. Yet, GWT still reports none of our images on the CDN are indexed. The above screenshot is from the GWT of our main domain.The GWT from the CDN subdomain just shows 0. We did not submit a sitemap to the verified subdomain property because we already have a sitemap submitted to the property on the main domain name. While making a search of images indexed from our CDN, nothing comes up: http://bit.ly/293ZbC1While checking the GWT of the CDN subdomain, I have been getting crawling errors, mainly 500 level errors. Not that many in comparison to the number of images and traffic that we get on our website. Google is crawling, but it seems like it just doesn't index the pictures!? Can anyone help? I have followed all the information that I was able to find on the web but yet, our images on the CDN still can't seem to get indexed.

                  Intermediate & Advanced SEO | | alphonseha
                  0
                • Waismann

                  Different Header on Home Page vs Sub pages

                  Hello, I am an SEO/PPC manager for a company that does a medical detox. You can see the site in question here: http://opiates.com. My question is, I've never heard of it specifically being a problem to have a different header on the home page of the site than on the subpages, but I rarely see it either. Most sites, if i'm not mistaken, use a consistent header across most of the site. However, a person i'm working for now said that she has had other SEO's look at the site (above) and they always say that it is a big SEO problem to have a different header on the homepage than on the subpages. Any thoughts on this subject? I've never heard of this before. Thanks, Jesse

                  Intermediate & Advanced SEO | | Waismann
                  0
                • khi5

                  How Many Images on 1 Page Are Acceptable

                  Example I have a page with a slideshow of 35 pictures. They are all unique pictures and relevant to the page, have unique alt text, though no captions or description surrounding the images. Page also has a lot of unique written content. Question: is this large nr of pictures potentially overwhelming for search engines and they may think it is spammy and it would be a safer bet to only keep the top 10 pictures on such page? I did review this great whiteboard Friday - http://moz.com/blog/image-seo-basics-whiteboard-friday - and I noticed this at very end: "The other part, and I see this happen a lot especially with bigger clients, is when you put lots and lots of images on one page, like an image gallery, those pages tend to be very hard to get indexed. The reason for that is there's not a lot unique textual content. A lot of times it's just overwhelming to users. It doesn't provide a lot of benefit in a search result." My page has been indexed, but will ranking potentially be hurt and to play it safe I better reduce nr of pictures? I do understand the "do what is best for the user" scenario and that is what I am doing with a lot of amazing original pictures not found on any other website. However, with search engines we obviously have to consider how they operate as well. Thank you

                  Intermediate & Advanced SEO | | khi5
                  0
                • steviephil

                  Best way to noindex an image?

                  Hi all, A client wanted a few pages noindexed, which was no problem using the meta robots noindex tag. However they now want associated images removed, some of which still appear on pages that they still want indexed. I added the images to their robots.txt file a few weeks ago (probably over a month ago actually) but they're all still showing when you do an image search. What's the best way to noindex them for good, and how do I go about implementing it? Many thanks, Steve

                  Intermediate & Advanced SEO | | steviephil
                  0
                • DonnieCooper

                  Site Architecture: Cross Linking vs. Siloing

                  I'm curious to know what other mozzers think about silo's... Can we first all agree that a flat site architecture is the best practice? Relevant pages should be grouped together. Shorter, broader and (usually) therefore higher volume keywords should be towards the top of each category. Navigation should flow from general to specific. Agreed? As Google say's on page 10 of their SEO Starter Guide, "you should think about how visitors will go from a general page (your root page) to a page containing more specific content ." OK, we all agree so far, right? Great! Enter my question: Bruce Clay (among others) seem to recommend siloing as a best practice. While Richard Baxter (and many others @ SEOmoz), seem to view silos as a problem. Me? I've practiced (relevant) internal cross linking, and have intentionally avoided siloing in almost all cases. What about you? Is there a time and place to use silos? If so, when and where? If not, how do we rectify the seemingly huge differences of opinions between expert folks such as Baxter and Clay?

                  Intermediate & Advanced SEO | | DonnieCooper
                  7
                • VizionSEO99

                  Will having image lightbox with content on a web page SEO friendly?

                  This website is done in CMS. Will having lightbox pop up with content be SEO friendly? If you go to the web page and click on the images at the bottom of the page. There are lightbox that will display information. Will these lightbox content information be crawl by Google? Will it be consider as content for the url http://jennlee.com/portfolio/bran.. Thanks, John

                  Intermediate & Advanced SEO | | VizionSEO99
                  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

                Access all your tools in one place. Whether you're tracking progress or analyzing data, everything you need is at your fingertips.

                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.