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
-
How google crawls images and which url shows as source?
Hi, I noticed that some websites host their images to a different url than the one their actually website is hosted but in the end google link to the one that the site is hosted. Here is an example: This is a page of a hotel in booking.com: http://www.booking.com/hotel/us/harrah-s-caesars-palace.en-gb.html When I try a search for this hotel in google images it shows up one of the images of the slideshow. When I click on the image on Google search, if I choose the Visit Page button it links to the url above but the actual image is located in a totally different url: http://r-ec.bstatic.com/images/hotel/840x460/135/13526198.jpg My question is can you host your images to one site but show it to another site and in the end google will lead to the second one?
Technical SEO | | Tz_Seo0 -
Migrating to new subdomain with new site and new content.
Our marketing department has decided that a new site with new content is needed to launch new products and support our existing ones. We cannot use the same subdomain(www = old subdomain and ww1 = new subdomain)as there is a technically clash between the windows server currently used, and the lamp stack required to run the new wordpress based CMS and site. We also have an aging piece of SAAS software on the www domain which is makes moving it to it's own subdomain far too risky. 301's have been floated as a way of managing the transition. I'm not too keen on that idea due to the double effect of new subdomain and content, and the SEO impact it might have. I've suggested uploading the new site to the new subdomain while leaving the old site in place. Then gradually migrating sections over before turning parts of the old site off and using a 301 at that point to finalise the move. The old site would inform user's there is a new version and it would then convert them to the new site(along with a cookie to auto redirect them in future.) while still leaving the old content in place for existing search traffic, bookmarks and visitors via static URLs. Before turning off sections on the old site we would create rel canonicals to redirect to the new pages based on a a mapped set of URLs(this in itself concerns me as the rel canonical is essentially linking to different content). Would be grateful for any advice on whether this strategy is flawed or whether another strategy might be more suitable?
Technical SEO | | Rezza0 -
Is there any benefit in using a subdomain redirected to a single page?
For example if we have a domain www.bobshardware.com.au and we setup a subdomain sydneysupplies.bobshardware.com.au and then brisbanescrewdrivers.bobshardware.com.au and used those in ad campaigns. Each subdomain being redirected back to a single page such as bobshardware.com.au/brisbane-screw-drivers etc. Is there a benefit ? Cheers
Technical SEO | | techdesign0 -
Removed Subdomain Sites Still in Google Index
Hey guys, I've got kind of a strange situation going on and I can't seem to find it addressed anywhere. I have a site that at one point had several development sites set up at subdomains. Those sites have since launched on their own domains, but the subdomain sites are still showing up in the Google index. However, if you look at the cached version of pages on these non-existent subdomains, it lists the NEW url, not the dev one in the little blurb that says "This is Google's cached version of www.correcturl.com." Clearly Google recognizes that the content resides at the new location, so how come the old pages are still in the index? Attempting to visit one of them gives a "Server Not Found" error, so they are definitely gone. This is happening to a couple of sites, one that was launched over a year ago so it doesn't appear to be a "wait and see" solution. Any suggestions would be a huge help. Thanks!!
Technical SEO | | SarahLK0 -
Robots.txt on subdomains
Hi guys! I keep reading conflicting information on this and it's left me a little unsure. Am I right in thinking that a website with a subdomain of shop.sitetitle.com will share the same robots.txt file as the root domain?
Technical SEO | | Whittie0 -
Product Images with organic results in SERP
Hey Mozzers, I've noticed that several of our product page results in Google have the product image associated with them. Today is the first day I've seen this. Does anyone know anything about these? Has Google put anything out about this? Here's a couple examples: http://content.screencast.com/users/Will_Swales/folders/Jing/media/08a16dcf-505e-443c-866d-fae6d805743e/2014-03-31_1031.png http://content.screencast.com/users/Will_Swales/folders/Jing/media/04972e7b-f6b2-4e78-ab11-95c52d69a200/2014-03-31_1056.png What's interesting is that they don't show for me when I use Chrome's Incognito mode. Any insights much appreciated! Will
Technical SEO | | evoNick4 -
Why are old versions of images still showing for my site in Google Image Search?
I have a number of images on my website with a watermark. We changed the watermark (on all of our images) in May, but when I search for my site getmecooking in Google Image Search, it still shows the old watermark (the old one is grey, the new one is orange). Is Google not updating the images its search results because they are cached in Google? Or because it is ignoring my images, having downloaded them once? Should we be giving our images a version number (at the end of the file name)? Our website cache is set to 7 days, so that's not the issue. Thanks.
Technical SEO | | Techboy0 -
How to move my blog from subdomain to subfolder?
Not an unusual situation, I have a blog on blog.domain.com it has quite a few blog postings. The platform is old and will be scrapped, but the blog content itself is going to be moved to domain.com/blog. The current process is we are manually listing all linked to/content pages and we are going to 301 redirect them to their counterparts on the new blog. This is going to be a tedious process. A) Is there any way to automate the moving of the blog? B) What is the best way to do the massive 301 redirect, php headers, .htaccess? Should we move the individual pages with redirects, or redirect the domain in the .htaccess (this will be very difficult to match all the titles and file structure)?
Technical SEO | | MarloSchneider0