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.
How does badly formatted HTML affect SEO?
-
Our website uses a custom built CMS, but uses a fairly standard WYSIWYG text editor.
I've looked at some of the code it produces, and it's not pretty. My gut feeling tells me that this extra bloat is bad for SEO.
Am I right in thinking that Google doesn't look kindly upon badly formatted and bloated HTML?
Thanks,
James -
Great, thanks for the info. I always thought Google was really hot on compliance, but good to know there is a bit of leeway.
-
James, You might also want to look at the cached version of your page and then click on Text-only version and see if it shows up correctly. If it does, no need to worry from that perspective, but definitely worth checking from a usability, accessibility etc.
-
The main concern is whether or not the spider can read the HTML. If something's broken, the spider may get confused. It's a good idea to check the site's W3C compliance and correct what you can, but I'm certain the search engines don't ding you if you're not perfectly compliant.
The real problems with bad HTML are load times and cross-browser compatibility. (Although, frankly, great HTML can have cross-browser compatibility issues, since IE still refuses to get with the program.) Make sure the site looks good in all major browsers.
-
As long as the code produced is readable in a web browser then it being bloated shouldn't have much of an impact in terms of SEO. The code bloats only downside is that it might slow the page load which will have impact on SEO. Remember crawlers like Google bot essentially look at the page content in terms of textual content, what labels (alt tags etc), images and links are on there not how neatly it is presented or whether it is valid markup or not. I would take a look at your page speed otherwise I would worry as long as it is able to fulfil all the basic on page requirements such as headers, page titles etc.
Just to reiterate this - I have worked with CMS driven sites that aren't W3C compliant and don't produce the nicest html, but have loaded fast and ranked in the top 3 for competitive terms.
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
-
Is using a subheading to introduce a section before the main heading bad for SEO?
I have noticed a popular trend in web design which involves sections of content being started with what looks to be smaller sub heading something like <h3>, <h4> or <h5> and then followed by a bigger heading <h2>. My question is, what is the best way to deal with this visual structure and will having a structure like this hurt your SEO? <h5>Contact Us</h5> <h2>Get started with your next project in minutes!<h2> <p>Some text here ...</p> Here are some examples where the header structure is similar to above (smaller before bigger): https://www.snappr.com/ https://form.taxi/ https://fluz.app/ If that structure is bad for SEO, then it seems like a simple solution is to make it purely visual, mimicking a sub header with styling on a span or paragraph like these sites do: https://www.andrejilderda.nl/ https://nightwatch.io/ https://www.swingvy.com/ https://www.figma.com/ My only concern with that approach is because your section sub heading is no longer an actual header you will miss out on ranking important and relevant keyword information for that section. Is this correct something to be worried about? There is one last solution I stumbled upon that involves using headings for both but in reverse hierarchy so a <h3> is first but styled to be smaller, followed by a visually bigger <h4> which provides the addition context. https://avocode.com/ Anyone have thoughts, expertise or resources on the matter?
Intermediate & Advanced SEO | | si.analytics0 -
I need help in doing Local SEO
Hey guys I hope everyone is doing well. I am new to SEO world and I want to do local SEO for one of my clients. The issue is I do not know how to do Local SEO at all or where to even start. I would appreciate it if anyone could help me or give me an article or a course to learn how to do it. Main question The thing that I want to do is that, I want my website to show up in top 3 google map results for different locations(which there is one actual location). For example I want to show up for
Intermediate & Advanced SEO | | seopack.org.ofici3
online clothing store in new york
online clothing store in los angeles or... Let's assume that we can ship our product to every other cities. So I hope I could deliver what I mean. I'd appreciate it if you could answer me with practical solutions.0 -
Are "Powered By..." type footer backlinks good or bad for SEO?
Hi guys, We're running a software company which is also selling WP themes amongst other things. We've heard recently that footer backlinks like "Powered by BigBangThemes" might do more harm than good. Some clients usually forget to change them - so we want to make sure we stop including them in case this is true. Thanks!
Intermediate & Advanced SEO | | andy.bigbangthemes0 -
6 .htaccess Rewrites: Remove index.html, Remove .html, Force non-www, Force Trailing Slash
i've to give some information about my website Environment 1. i have static webpage in the root. 2. Wordpress installed in sub-dictionary www.domain.com/blog/ 3. I have two .htaccess , one in the root and one in the wordpress
Intermediate & Advanced SEO | | NeatIT
folder. i want to www to non on all URLs Remove index.html from url Remove all .html extension / Re-direct 301 to url
without .html extension Add trailing slash to the static webpages / Re-direct 301 from non-trailing slash Force trailing slash to the Wordpress Webpages / Re-direct 301 from non-trailing slash Some examples domain.tld/index.html >> domain.tld/ domain.tld/file.html >> domain.tld/file/ domain.tld/file.html/ >> domain.tld/file/ domain.tld/wordpress/post-name >> domain.tld/wordpress/post-name/ My code in ROOT htaccess is <ifmodule mod_rewrite.c="">Options +FollowSymLinks -MultiViews RewriteEngine On
RewriteBase / #removing trailing slash
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^(.*)/$ $1 [R=301,L] #www to non
RewriteCond %{HTTP_HOST} ^www.(([a-z0-9_]+.)?domain.com)$ [NC]
RewriteRule .? http://%1%{REQUEST_URI} [R=301,L] #html
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteRule ^([^.]+)$ $1.html [NC,L] #index redirect
RewriteCond %{THE_REQUEST} ^[A-Z]{3,9}\ /index.html\ HTTP/
RewriteRule ^index.html$ http://domain.com/ [R=301,L]
RewriteCond %{THE_REQUEST} .html
RewriteRule ^(.*).html$ /$1 [R=301,L]</ifmodule> The above code do 1. redirect www to non-www
2. Remove trailing slash at the end (if exists)
3. Remove index.html
4. Remove all .html
5. Redirect 301 to filename but doesn't add trailing slash at the end0 -
AJAX requests and implication for SEO
Hi, I got a question in regard to webpages being served via AJAX request as I couldn't find a definitive answer in regard to an issue we currently face: When visitors on our site select a facet on a Listing Page, the site doesn't fully reload. As a consequence only certain tags of the content (H1, description,..) are updated, while other tags like canonical URLs, meta noindex,nofollow tag, or the title tag are not updating as long as you don't refresh the page. We have no information about how this will be crawled and indexed yet but I was wondering if anyone of you knows, how this will impact SEO?
Intermediate & Advanced SEO | | FashionLux0 -
Yoast seo title question
I was referred to this plugin and have found it to be the most irritating and poorly designed plugin in the world. I want to be able to set my titles without it changing my page headers as well. For instance - If I set my title to be "This is my article name | site name" it will make my H1 tag read the same. I do not want or desire this nonsense. Why would they think this is something wise? Why would I want my site name on every single H1 tag on my site? How can I fix this? I only want my title to be my title. I want my H1 tag to remain the post/page name that I define in wordpress.
Intermediate & Advanced SEO | | Atomicx0 -
Is .ME domain is effective in SEO ?
I am always listening about TLD. com. org .net but what about the .me domain. Can this will be effective in SEO. Can i able to beat down my competitors, if i choose .me . I also have a .com or other TLD option but if i am making my name than .me is for me but i need your suggestion for the seo purpose. Is there really domain affective in term of SEO.
Intermediate & Advanced SEO | | pnb5670 -
Sitewide footer links - bad or not?
Hi, Sitewide footer links, is this bad for SEO? Basically I see all the time the main navigation repeated in the footer, sometimes as almost something to just fill the footer up. Is this bad for SEO (im guessing it is) and can you explain why you think it is? Cheers
Intermediate & Advanced SEO | | activitysuper0