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.

      Enhance Keyword Discovery with Bulk Analysis
      Moz Pro

      Enhance Keyword Discovery with Bulk Analysis

      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

      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
    • 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. Speed benefits from loading images from a subdomain

    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.

    Speed benefits from loading images from a subdomain

    Technical SEO
    2
    3
    1731
    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.
    • Gordian
      Gordian last edited by

      I have read that loading images from a subdomain of your site instead of the main domain will give you speed benefits on load time. Has anyone actually seen that to be the case? Thanks!

      1 Reply Last reply Reply Quote 0
      • Gordian
        Gordian @TakeshiYoung last edited by

        Thanks for the helpful advice!

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

          If you are talking about using a cookie-free subdomain, that can definitely have an impact on site speed:

          http://developer.yahoo.com/performance/rules.html#cookie_free

          Just using a subdomain won't have any benefit, and may even slow things down. Using a CDN for images and other components is usually the quickest and easiest solution for most sites.

          Gordian 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

          • 21centuryweb

            Why images are not getting indexed and showing in Google webmaster

            Hi, I would like to ask why our website images not indexing in Google. I have shared the following screenshot of the search console.  https://www.screencast.com/t/yKoCBT6Q8Upw Last week (Friday 14 Sept 2018) it was showing 23.5K out 31K were submitted and indexed by Google. But now, it is showing only 1K 😞 Can you please let me know why might this happen, why images are not getting indexed and showing in Google webmaster.

            Technical SEO | | 21centuryweb
            0
          • Tucker_10

            Moving from a subdomain to subfolder

            Hello, I am currently working on a site that is leveraging multiple subdomains. I wanted to see if it suggested to migrate them into subfolders. One of the subdomains is a .shop and the other is location specific. Thanks, T

            Technical SEO | | Tucker_10
            0
          • ArchieChilds

            Does google index images or ALT text only?

            Does google index images or ALT text only?

            Technical SEO | | ArchieChilds
            0
          • MattWatts

            Can you use multiple videos without sacrificing load times?

            We're using a lot of videos on our new website (www.4com.co.uk), but our immediate discovery has been that this has a negative impact on load times. We use a third party (Vidyard) to host our videos but we also tried YouTube and didn't see any difference. I was wondering if there's a way of using multiple videos without seeing this load speed issue or whether we just need to go with a different approach. Thanks all, appreciate any guidance! Matt

            Technical SEO | | MattWatts
            1
          • QuantumWeb62

            Removing site subdomains from Google search

            Hi everyone, I hope you are having a good week? My website has several subdomains that I had shut down some time back and pages on these subdomains are still appearing in the Google search result pages. I want all the URLs from these subdomains to stop appearing in the Google search result pages and I was hoping to see if anyone can help me with this. The subdomains are no longer under my control as I don't have web hosting for these sites (so these subdomain sites just show a default hosting server page). Because of this, I cannot verify these in search console and submit a url/site removal request to Google. In total, there are about 70 pages from these subdomains showing up in Google at the moment and I'm concerned in case these pages have any negative impacts on my SEO. Thanks for taking the time to read my post.

            Technical SEO | | QuantumWeb62
            0
          • solvid

            Server Connection Error when using Google Speed Test Insight and GTMetrix

            Hi Guys, Recently got into the issue when testing load speed of my website (https://solvid.co.uk). Occasionally, Google Speed Insights gives me a server connection error which states _"PageSpeed was unable to connect to the server. Ensure that you are using the correct protocol (_http vs https), the page loads in a browser, and is accessible on the public internet." Also, GTMetrix gives me an error as well, which states the following: "An error occurred fetching the page: HTTPS error: SSl connect attempt failed" All of my redirects seem to be set-up correctly as well as the SSL certificate. I've contacted my hosting provider (godaddy), they are saying that everything is fine with the server and the installation. Also, tried in different browsers in incognito mode, still gives me the same error. Until yesterday I haven't had such a problem. I've also attached the error screenshot links. I would really appreciate your help! Dmytro UxchPYR M52iPDf

            Technical SEO | | solvid
            1
          • bedbugsupply

            Reverse proxy a successful blog from subdomain to subfolder?

            I have an ecommerce site that we'll call confusedseo.com. I created a WordPress blog and CNAME'd it to blog.confusedseo.com. Since then, the blog has earned a PageRank of 3 and a decent amount of organic traffic. I am considering a reverse proxy to forward blog.confusedseo.com to confusedseo.com/blog/. As I understand it, this will greatly help the "link juice" of the root domain. However, I'm concerned about any potential harm done to the existing SEO value of the blog. What, if anything, should I be doing to ensure that the reverse proxy doesn't hurt my "juice" rather than help it?

            Technical SEO | | bedbugsupply
            0
          • allstatetransmission

            Removing images from site and Image Sitemap SEO advice

            Hello again, I have received an update request where they want me to remove images from this site (as of now its a bunch of thumbnails) current page design: http://1stimpressions.com/portfolio/car-wraps/ and turn it into a new design which utilized a slider (such as this): http://1stimpressions.com/portfolio/ They don't want the thumbnails on the page anymore. My question is since my site has a image sitemap that has been indexed will removing all the images hurt my SEO greatly? What would the recommended steps to take to reduce any SEO damage be, if so? Thank you again for your help, always great and very helpful feedback! 🙂 cheers!

            Technical SEO | | allstatetransmission
            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.