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
-
I want to load my ecommerce site xml via CDN
Hello Experts. My ecommerce site - abcd.com
Technical SEO | | micey123
My ecommrece site sitemap abcd.com/sitemap.xml
My subdomain - xyz.abcd.com ( this is blank page but status is 200 which runs from cdn) My ecommerce site sitemap abcd.com/sitemap.xml contains only 1 link of subdomain sitemap- xyz.abcd.com/sitemap.xml
And this sitemap- xyz.abcd.com/sitemap.xml contains all category and product links of abcd.com So my query is :- Above configuration is okay? In search console I will add new property - xyz.abcd.com. and add sitemap xyz.abcd.com/sitemap.xml So Google will able to give errors for my website abcd.com Purpose - I want to run my xml sitemap from cdn that's why i have created subdomain like xyz.abcd.com Hope you understood my query. Thanks!0 -
Tools/Software that can crawl all image URLs in a site
Excluding Screaming Frog, what other tools/software to use in order to crawl all image URLs in a site? Because in Screaming Frog, they don't crawl image URLs which are not under the site domain. Example of an image URL outside the client site: http://cdn.shopify.com/images/this-is-just-a-sample.png If the client is: http://www.example.com, Screaming Frog only crawls images under it like, http://www.example.com/images/this-is-just-a-sample.png
Technical SEO | | jayoliverwright0 -
CSS background image links bad for seo?
On one of the websites I manage SEO for, the developers are changing how our graphical links are coded. They're basically coding in such away where there is no anchor text and no alt tag, so for example: So there's no anchor nor alt context for Google's crawler. How badly will this affect SEO, or is it extremely minimal and I shouldn't worry about? Thanks in advance.
Technical SEO | | JimLynch0 -
Does a subdomain benefit from being on a high authority domain?
I think the title sums up the question, but does a new subdomain get any ranking benefits from being on a pre-existing high authority domain. Or does the new subdomain have to fend for itself in the SERPs?
Technical SEO | | RG_SEO0 -
"Fourth-level" subdomains. Any negative impact compared with regular "third-level" subdomains?
Hey moz New client has a site that uses: subdomains ("third-level" stuff like location.business.com) and; "fourth-level" subdomains (location.parent.business.com) Are these fourth-level addresses at risk of being treated differently than the other subdomains? Screaming Frog, for example, doesn't return these fourth-level addresses when doing a crawl for business.com except in the External tab. But maybe I'm just configuring the crawls incorrectly. These addresses rank, but I'm worried that we're losing some link juice along the way. Any thoughts would be appreciated!
Technical SEO | | jamesm5i0 -
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 -
Subdomain vs Main Domain Penalties
We have a client who's main root.com domain is currently penalized by Google, but the subdomain.root.com is appearing very well. We're stumped - any ideas why?
Technical SEO | | Prospector-Plastics0 -
Where should a knowledge base be hosted for max. SEO benefit?
A client would like to set up a knowledge base to work in conjunction with their website and we are tossing up whether to go with a hosted solution (and therefore set up as a subdomain) or find a solution that we host on the clients domain (which will presumably have more SEO benefit). We are leaning towards the latter (although are mindful that we need to balance the client’s desire for a quality KB solution). Appreciate your feedback.
Technical SEO | | E2E0