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
-
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!
-
Thanks for the helpful advice!
-
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.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
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.
Related Questions
-
Google image search filter tabs and how to rank on them
I have noticed Google image search has included suggestion tabs (e.g,. design, nature... when searching background) on the top of the image search.
Technical SEO | | Mike555
Are there specific meta tags I can add into my images so that my images will show up on each tab?
Do those filters just show content based on image keywords or something else? IRme7gQ0 -
Do I need a separate robots.txt file for my shop subdomain?
Hello Mozzers! Apologies if this question has been asked before, but I couldn't find an answer so here goes... Currently I have one robots.txt file hosted at https://www.mysitename.org.uk/robots.txt We host our shop on a separate subdomain https://shop.mysitename.org.uk Do I need a separate robots.txt file for my subdomain? (Some Google searches are telling me yes and some no and I've become awfully confused!
Technical SEO | | sjbridle0 -
Loading images below the fold? Impact on SEO
I got this from my developers. Does anyone know if this will be a SEO issue? We hope to lazy-load images below the fold where possible, to increase render speed - are you aware of any potential issues with this approach from an SEO point of view?
Technical SEO | | KatherineWatierOng1 -
Best Practice on 301 Redirect - Images
We have two sites that sell the same products. We have decided to retire one of the sites as we'd like to focus on one property. I know best practice is to redirect apples to apples, which in our case is easily done since the sites sold the same thing. www.SiteABC.com/ProductA can be redirected to www.SiteXYZ.com/ProductA. My question is how far does that thinking go regarding images? Each product has a main product page, of course, and then up to 6 images in some cases. Is it necessary to redirect www.SiteABC.com/ProductA-Image1.jpg to www.SiteXYZ.com/ProductA-Image1.jpg? Or can they all be redirected to just the product page?
Technical SEO | | Natitude0 -
For an image which is in the CSS and not the HTML, can you add an alt tag?
I would like to improve SEO on a page with three big images, which are currently hosted in the CSS. The sample I am working with is at http://xquisitevents.com/about-us/ and I put my cursor over the big picture of the wedding dress with bouquet, I inspected the element and saw this code in a div tag: #upperleft { background-image:url(images/AboutTopLeft.jpg); Can I add an alt tag to the CSS somehow, or can I have it added to the HTML? What is the best way to handle this, to include keywords like exquisite weddings and special event designs?
Technical SEO | | BridgetGibbons0 -
Changing images on site without losing ranking
A number of images on my site rank very well under google image search but need to be replaced with updated versions. If I keep the file name and pixel dimensions identical will switching the image effect my rankings? Thanks!
Technical SEO | | Justin450 -
Can hotlinking images from multiple sites be bad for SEO?
Hi, There's a very similar question already being discussed here, but it deals with hotlinking from a single site that is owned by the same person. I'm interested whether hotlinking images from multiple sites can be bad for SEO. The issue is that one of our bloggers has been hotlinking all the images he uses, sometimes there are 3 or 4 images per blog from different domains. We know that hotlinking is frowned upon, but can it affect us in the SERPs? Thanks, James
Technical SEO | | OptiBacUK0