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.
Blocking Dynamic URLs with Robots.txt
-
Background:
My e-commerce site uses a lot of layered navigation and sorting links. While this is great for users, it ends up in a lot of URL variations of the same page being crawled by Google. For example, a standard category page:
...which uses a "Price" layered navigation sidebar to filter products based on price also produces the following URLs which link to the same page:
http://www.mysite.com/widgets.html?price=1%2C250
http://www.mysite.com/widgets.html?price=2%2C250
http://www.mysite.com/widgets.html?price=3%2C250
As there are literally thousands of these URL variations being indexed, so I'd like to use Robots.txt to disallow these variations.
Question:
-
Is this a wise thing to do? Or does Google take into account layered navigation links by default, and I don't need to worry.
-
To implement, I was going to do the following in Robots.txt:
User-agent: *
Disallow: /*?
Disallow: /*=
....which would prevent any dynamic URL with a '?" or '=' from being indexed. Is there a better way to do this, or is this a good solution?
Thank you!
-
-
If you are happy with any URLs with query strings not being indexed your robots.txt will work fine.
Do any or your URLs with question marks in them have links to them? If so you might want to be careful blocking google from indexing them. I would think you'd lose the benefits those links would pass to your site.
-
Tait,
Thanks for the answer. I think the canonical tag would be ideal, but in terms of implementation, it would require some substantial code modification to the site / PHP code as I have a lot of categories, and adding this manually to each one would be very time consuming.
Would preventing the spiders from indexing any URLs with a "?" or "&" (which would only be dynamic URLs variations) cause any problems? Or is this just not an ideal best practice?
Thanks!
-
I don't know if there's a good solution with robots.txt given your URL structure. However, you could use the rel=canonical link tag in the header to force google to treat many of your URLs the same way. This would help you avoid duplicate content penalties.
More on rel=canonical:
http://www.google.com/support/webmasters/bin/answer.py?answer=139394
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
-
Robots.txt & Disallow: /*? Question!
Hi, I have a site where they have: Disallow: /*? Problem is we need the following indexed: ?utm_source=google_shopping What would the best solution be? I have read: User-agent: *
Intermediate & Advanced SEO | | vetofunk
Allow: ?utm_source=google_shopping
Disallow: /*? Any ideas?0 -
Inactive Products - Inactive URLs
Hi, In our website www.viatrading.com we have many products that might be in stock or not depending on availability. Until now, when a product was not available anymore, we took this page down (and redirected to its product category page). And, only if the product was available again, we re-activated the URL - this might be days, months or even years later. To make this more SEO-friendly, we decided now that while a product is not available, instead or deactivating/redirecting the page, we will leave it online and just add a message saying "This product is currently not available". If we do this, we will automatically re-activate about 500 products pages at once. 1. Just to make sure, is it harmful for SEO to keep activating/deactivating URLs this way? 2. Since most of these pages have been deindexed for a long time due to being redirected - have they lost all their SEO juice? 3. How can we better activate these old 500 pages - is it ok activating them all at once? Thank you,
Intermediate & Advanced SEO | | viatrading11 -
Canonical URL & sitemap URL mismatch
Hi We're running a Magento store which doesn't have too much stock rotation. We've implemented a plugin that will allow us to give products custom canonical URLs (basically including the category slug, which is not possible through vanilla Magento). The sitemap feature doesn't pick up on these URLs, so we're submitting URLs to Google that are available and will serve content, but actually point to a longer URL via a canonical meta tag. The content is available at each URL and is near identical (all apart from the breadcrumbs) All instances of the page point to the same canonical URL We are using the longer URL in our internal architecture/link building to show this preference My questions are; Will this harm our visibility? Aside from editing the sitemap, are there any other signals we could give Google? Thanks
Intermediate & Advanced SEO | | tomcraig860 -
Where to put a page ID in a URL?
Hello, My company is going to change URLs to example.com/category or example.com/product. When we will change the URLs to product or category pages somehow we have to check whether the requested page is from category table in DB or from products table (this gives much speed to page load time). So we have to choose how to make the different product and category pages.
Intermediate & Advanced SEO | | komeksimas
Programmers said that we need to insert id to URL. So the question is: Which is the better way to place an id to an URL? example.com/product-name?id=111 example.com/product-name/111 example.com/product_name-111 Or maybe we should use some other punctuation mark to separate id from product name? p.s. I have read Dynamic URLs vs. static URLs by Google and it still didn't answered which is the best for all of the pages. Somehow others solve this problem by typing only the names to the URL, but could anyone tell what that technology should be?0 -
Canonical URLs and Sitemaps
We are using canonical link tags for product pages in a scenario where the URLs on the site contain category names, and the canonical URL points to a URL which does not contain the category names. So, the product page on the site is like www.example.com/clothes/skirts/skater-skirt-12345, and also like www.example.com/sale/clearance/skater-skirt-12345 in another category. And on both of these pages, the canonical link tag references a 3rd URL like www.example.com/skater-skirt-12345. This 3rd URL, used in the canonical link tag is a valid page, and displays the same content as the other two versions, but there are no actual links to this generic version anywhere on the site (nor external). Questions: 1. Does the generic URL referenced in the canonical link also need to be included as on-page links somewhere in the crawled navigation of the site, or is it okay to be just a valid URL not linked anywhere except for the canonical tags? 2. In our sitemap, is it okay to reference the non-canonical URLs, or does the sitemap have to reference only the canonical URL? In our case, the sitemap points to yet a 3rd variation of the URL, like www.example.com/product.jsp?productID=12345. This page retrieves the same content as the others, and includes a canonical link tag back to www.example.com/skater-skirt-12345. Is this a valid approach, or should we revise the sitemap to point to either the category-specific links or the canonical links?
Intermediate & Advanced SEO | | 379seo0 -
URL Shorteners. Are they SEO Friendly?
Do URL shortener services like bit.ly act as 301 redirects? I was thinking about utilizing one for longer query based URLs and didn't want to risk losing link juice. Thanks for the insight! Regards - Kyle
Intermediate & Advanced SEO | | kchandler0 -
Robots.txt & url removal vs. noindex, follow?
When de-indexing pages from google, what are the pros & cons of each of the below two options: robots.txt & requesting url removal from google webmasters Use the noindex, follow meta tag on all doctor profile pages Keep the URLs in the Sitemap file so that Google will recrawl them and find the noindex meta tag make sure that they're not disallowed by the robots.txt file
Intermediate & Advanced SEO | | nicole.healthline0 -
URL Length or Exact Breadcrumb Navigation URL? What's More Important
Basically my question is as follows, what's better: www.romancingdiamonds.com/gemstone-rings/amethyst-rings/purple-amethyst-ring-14k-white-gold (this would fully match the breadcrumbs). or www.romancingdiamonds.com/amethyst-rings/purple-amethyst-ring-14k-white-gold (cutting out the first level folder to keep the url shorter and the important keywords are closer to the root domain). In this question http://www.seomoz.org/qa/discuss/37982/url-length-vs-url-keywords I was consulted to drop a folder in my url because it may be to long. That's why I'm hesitant to keep the bradcrumb structure the same. To the best of your knowldege do you think it's best to drop a folder in the URL to keep it shorter and sweeter, or to have a longer URL and have it match the breadcrumb structure? Please advise, Shawn
Intermediate & Advanced SEO | | Romancing0