SEO Advice: When to Use Subdomains

As a expert Research Engine Optimizer, I am requested a good deal of issues by folks who will not know the very first factor about computer systems permit alone search engines. I am also requested issues of people blessed number of who are new to the area, and among these so-known as “newbies” a recurring concern often pops up – Which of the pursuing means is ideal to framework website URLs?

  • OR

In this posting I will attempt to solution the concern, “which URL framework is ideal in conditions of SEO, subfolders or subdomains?”

Shorter Answer: If the breadth of an problem or keyphrase will be coated in this sort of element that a new website really should be created to ideal accommodate the content, or much more simply, if the site’s graphical navigation will will need to be altered, use subdomains. In all other situations, use subfolders.

Long Answer: To solution this concern in element, we will will need to go more than a number of key specifics concerning subdomains, subfolders and website themes.


  • Represented in the URL by the figures after “http://” and the kinds in advance of “”
  • Are seen by Research Engines as totally one of a kind web-sites independent of the dad or mum area.
  • Web-site Authority (in other terms, the ability for the website and its subsequent web pages to rank in the search engines) is not handed down from the dad or mum area.
  • Can be listed on the very first website page of the SERPs alongside with primary area web pages. Feasibly, all 10 of the results on the very first website page of a search engine could be subdomains of a one dad or mum area.


  • Represented in the URL by the figures after “” and in advance of “filename.html”.
  • Are seen by Research Engines as a subdirectory within just a website.
  • Web-site Authority is handed down from the primary area.
  • At most, 1 subfolder can look on the very first SERP from the very same area or subdomain.

Web-site Theme:

  • As a standard rule, the much more targeted the topic of a website the less complicated it is for that website to rank for search phrases directly associated to its topic.
  • Is described working with all of the site’s web pages, not just the homepage or major subpages.

So here’s the extended solution:

Research engine optimization is all about driving the most visitors. Where by the goal is to make an authority website with plenty of excellent content that will be identified by search engine pushed site visitors working with laser-focus on search conditions, as nicely as one of a kind, “extended-tail” search conditions that most would hardly ever believe to improve for, but look on web pages in the subfolders of your website and generate visitors just the very same.

Utilizing subdomains may possibly look captivating mainly because they can direct to a likely greater quantity of again-backlinks (nevertheless not if each individual subdomain is hosted on the very same IP), or they can sway the SERPs in your favor by crowding out the major positions with your web pages. But with no right promotion, a subdomain only stops potential laser-qualified as nicely as “extended-tail” search site visitors from obtaining your website.

My information is only to use subdomains when the amount of content on a provided topic is so burgeoning that it needs a individual navigation and design (i.e. its have website), or is of excellent sufficient high quality that it will purchase backlinks and stand on its have.

For example:

  • If you have a 15 website page website about your garden-care company, and 10 of people web pages revolve all around a special fertilizer you’ve got designed, you may possibly contemplate making “” so that you can sector your fertilizer separately.
  • Take my company’s area “”. Not too long ago, we designed a subdomain “”, mainly because we had so a great deal information and facts concerning our wi-fi application development options that it only made feeling to generate a individual website for it.

In this example, the target is narrow but there is nevertheless an comprehensive amount of content. So we are sending site visitors to the subdomain working with qualified search phrases although site visitors are also obtaining us working with “extended-tail” lookups and landing on the web pages of subfolders.

The in general lesson listed here is to generate subdomains ONLY when you have the high quality and/or quantity of content to help them. Bear in mind that subdomains are independent web-sites in the eyes of the search engines, meaning that in order for them to rank, they will need promotion and connection constructing endeavours.