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.
<sub>& <sup>tags, any SEO issues?</sup></sub>
-
Hi - the content on our corporate website is pretty technical, and we include chemical element codes in the text that users would search on (like S02, C02, etc.) A lot of times our engineers request that we list the codes correctly, with a <sub>on the last number. Question - does adding this code into the keyword affect SEO? The code would look like SO<sub>2</sub>.</sub>
Thanks.
-
Hi Jenny
jStrong is correct. Subscript (<sub>) and superscript (<sup>) tags are not going to have any effect (positive or negative) on SEO.</sup></sub>
-
Hi Jenny,
I don't think these tags would have any affect on the SEO. They are formatting tags the same as _or _that only affect the styling of the text they surround and it is unlikely that when crawled they are treated as anything but that. __
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
-
If I change Tags and Categories in Wordpress blog post, will it negatively affect SEO and cause 404s?
Hi, I have belatedly come to the conclusion that I have been using tags and categories when blogging in wordpress incorrectly. The result is that Google seems to prefer to show my archives and tags in search results rather than the post itself. Not good UX. As the site is only a few months old, am I best to learn my lesson and tag and categorize correctly moving forward or Should I go back in to these posts and clean them up & categorize and tag correctly. If I do this, will it cause 404s and hurt my SEO? Thanks!
Technical SEO | | johnyfiveisalive2 -
Custom hreflang tags in WP & using with Yoast
Hi My clients dev has added custom fields for adding hreflang tags to head of pages such as: "Rel Type", "The URL", and "Language Code" Am i right in thinking that until a different language/country version of the site is created these can remain empty or should they still be populated once added say with some sort of global reference or best left blank since will leave the head content global by default ? Also how important is it to add charset to the language code ? since seems optional ? Also this set up is on WP multi-site with Yoast and devs asked me the below: _One thing to note is that Yoast generates its own "canonical" tags - so if _
Technical SEO | | Dan-Lawrence
_you are going to use hreflang tags and canonical tags then you don't need to _
_add a canonical using the custom fields I have set up - Yoast has that _
sorted. _But if you are going down the route of NOT having any canonical tags - and _
_using a x-defult for the hreflang tags, I will need to try and suppress the _
_Yoast canonical tag so you can do this. Much depends on your approach and _
what you think is best. So how do i know if using canonicals or x-default, i take it best simplest to leverage Yoast and hence not add canonicals to custom fields ? Isnt x-default just for indicating language selectors/redirector not specific to 1 region? So long as havnt got those then good to proceed with Yoasts generated canonicals ? Cheers dan0 -
Do H2 tags carry more weight than h4 tags?
Of course H tags are key signals for relevance in search. Does an h2 tag send a significantly "louder" signal than an h4 tag?
Technical SEO | | aj6130 -
Canonical tag for Home page: with or without / at the end???
Setting up canonical tags for an old site. I really need advice on that darn backslash / at the end of the homepage URL. We have incoming links to the homepage as http://www.mysite.com (without the backslash), and as http://www.mysite.com/ (with the backslash), and as http://www.mysite.com/index.html I know that there should be 301 redirects to just one version, but I need to know more about the canonical tags... Which should the canonical tag be??? (without the backslash) or (with the backslash) Thanks for your help! 🙂
Technical SEO | | GregB1230 -
Use of title tags on divs for SEO purposes
Hello community, I recently was asked by a client to analyze a website of a competitor. I did was he asked me to do but when I looked at the source code of the website I found this code: I changed the exact words into something for privacy reasons, but I never looked at a code like this.
Technical SEO | | JarnoNijzing
Using a div for an anchor I get but adding a title tag to the div? I never seen that before. Title tags on anchors, yes, using images in divs as background and then adding a title??? Does anyone have any experience with a code like this and if you do how does this impact rankings? Does it impact rankings at all and does anybody know of any correlation between the two? Looking forward for your responses. Regards Jarno0 -
How does Google find /feed/ at the end of all pages on my site?
Hi! In Google Webmaster Tools I find *.../feed/ as a 404 page in crawl errors. The problem is that none of these pages exist and they have no inbound links (except the start page). FYI, it´s a wordpress site. Example: www.mysite.com/subpage1/feed/ www.mysite.com/subpage2/feed/ www.mysite.com/subpage3/feed/ etc Does Google search for /feed/ by default or why do I keep getting these 404´s every day?
Technical SEO | | Vivamedia0 -
Do we need to manually submit a sitemap every time, or can we host it on our site as /sitemap and Google will see & crawl it?
I realized we don't have a sitemap in place, so we're going to get one built. Once we do, I'll submit it manually to Google via Webmaster tools. However, we have a very dynamic site with content constantly being added. Will I need to keep manually re-submitting the sitemap to Google? Or could we have the continually updating sitemap live on our site at /sitemap and the crawlers will just pick it up from there? I noticed this is what SEOmoz does at http://www.seomoz.org/sitemap.
Technical SEO | | askotzko0 -
Google Off/On Tags
I came across this article about telling google not to crawl a portion of a webpage, but I never hear anyone in the SEO community talk about them. http://perishablepress.com/press/2009/08/23/tell-google-to-not-index-certain-parts-of-your-page/ Does anyone use these and find them to be effective? If not, how do you suggest noindexing/canonicalizing a portion of a page to avoid duplicate content that shows up on multiple pages?
Technical SEO | | Hakkasan1