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
    3074
    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

                • Caffeine_Marketing

                  .com vs .co.uk

                  Hi, we are a UK based company and we have a lot of links from .com websites. Does the fact that they are .com or .co.uk affect the quality of the links for a UK website?

                  Intermediate & Advanced SEO | | Caffeine_Marketing
                  0
                • BeckyKey

                  Anchor Text vs. Button Links

                  Hi How important are anchor text links within your own site vs. buttons for SEO? We've redesigned some of our pages from anchor text links to buttons which are just clickable images.I know historically this isn't the best way, but is it still as important as it used to be?

                  Intermediate & Advanced SEO | | BeckyKey
                  0
                • Julien.Ferras

                  Google doesn't index image slideshow

                  Hi, My articles are indexed and images (full size) via a meta in the body also. But, the images in the slideshow are not indexed, have you any idea? A problem with the JS Example : http://www.parismatch.com/People/Television/Sport-a-la-tele-les-femmes-a-l-abordage-962989 Thank you in advance Julien

                  Intermediate & Advanced SEO | | Julien.Ferras
                  0
                • GalcoIndustrial

                  Lowercase VS. Uppercase Canonical tags?

                  Hi MOZ, I was hoping that someone could help shed some light on an issue I'm having with URL structure and the canonical tag. The company I work for is a distributor of electrical products and our E-commerce site is structured so that our URL's (specifically, our product detail page URL's) include a portion (the part #) that is all uppercase (e.g: buy/OEL-Worldwide-Industries/AFW-PG-10-10). The issue is that we have just recently included a canonical tag in all of our product detail pages and the programmer that worked on this project has every canonical tag in lowercase instead of uppercase.  Now, in GWT, I'm seeing over 20,000-25,000 "duplicate title tags" or "duplicate descriptions". Is this an issue?  Could this issue be resolved by simply changing the canonical tag to reflect the uppercase URL's?  I'm not too well versed in canonical tags and would love a little insight. Thanks!

                  Intermediate & Advanced SEO | | GalcoIndustrial
                  0
                • MarshallThompson

                  Would it be better to Start Over vs doing a Website Migration?

                  Hey guys /gals I have a question please.  I have a computer repair business that does extremely well in search and is on the front page of google for anything computer repair related. However, I am currently re-branding my company and have completely redesigned every aspect of the UI and the SEO Site structure as well as the fact that I have completely written vastly different content and different title tag lines and meta descriptions for each page. So basically when doing a migration we know that we want to keep our content, titles, headlines and meta descriptions the same as to not lose our page rank. Seeing that I have completely went against the grain in all directions on a much needed company re-branding and everything is completely different from the old site is it even worthwhile 301 redirecting my old urls to the new ones that would (best) correspond with the new? In the plainest English, would I do better at Ranking the New Website QUICKER without doing 301 redirects from the OLD to the NEW? In an EXTREME instance like what I have done, would the Domain Migration IMPEDED me ranking the new site seeing how nothing is the same? I have build a Rock solid SILO Site Architecture on the New site which is WordPress using the Thesis Framework and the old domain is built on JOOMLA 1.5 Thank fellas Marshall

                  Intermediate & Advanced SEO | | MarshallThompson
                  0
                • JohnW-UK

                  One Way Links vs Two Way Links

                  Hi, Was speaking to a client today and got asked how damaging two way links are. i.e. domaina.com links to domainb.com and domainb.com links back to domaina.com. I need a nice simple layman's explanation of if/how damaging they are compared to one way links. And please don't answer with you lose link juice as I have a job explaining link juice.... I am explaining things to a non techie! Thank you!!

                  Intermediate & Advanced SEO | | JohnW-UK
                  0
                • Caleone

                  800 Number vs. Local Phone

                  I have a client with multiple locations throughout the US. They are currently using different 800 numbers on their site for their different locations. As they try to optimize their local presence but submitting to local directories, we are trying to determine two things: Does having a local number reroute to an 800 number devalue the significance of it being a local number (I've never heard of this, but someone told them it did) Locality and consistency are important. Assuming they can't remove the 800 numbers from the site, are they better off keeping the 800 numbers on their site and using local numbers every else online OR just using the 800 numbers for all of their local listings?

                  Intermediate & Advanced SEO | | Caleone
                  0
                • nicole.healthline

                  Wordtracker vs Google Keyword Tool

                  When I find keyword opportunities in Wordtracker, I'll sometimes run them through Adwords Keyword tool only to find that Google says these keywords have 0 search volume. Would you use these keywords even though Google says users aren't searching for them?

                  Intermediate & Advanced SEO | | nicole.healthline
                  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.