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
-
Lightboxes and SEO
Do lightboxes (AKA popup boxes when you click "learn more" type CTAs) have any negative effect on SEO? We are looking at revamping our sites to have more of a tiled approach, and a lightbox with summary content popping out with additional CTAs, directing to pages with more information or free trial pages. Is there any downside to this approach from an organic perspective? is there anything specific to keep in mind when creating these if not?
Intermediate & Advanced SEO | | Chris81980 -
Does having a different sub domain for your Landing Page and Blog affect your overall SEO benefits and Ranking?
We have a domain www.spintadigital.com that is hosted with dreamhost and we also have a seperate subdomain blog.spintadigital.com which is hosted in the Ghost platform and we are also using Unbounce landing pages with the sub domain get.spintadigital.com. I wanted to know whether having subdomain like this would affect the traffic metric and ineffect affect the SEO and Rankings of our site. I think it does not affect the increase in domain authority, but in places like similar web i get different traffic metrics for the different domains. As far as i can see in many of the metrics these are considered as seperate websites. We are currently concentrating more on our blogs and wanted to make sure that it does help in the overall domain. We do not have the bandwidth to promote three different websites, and hence need the community's help to understand what is the best option to take this forward.
Intermediate & Advanced SEO | | vinodh-spintadigital0 -
CDN for SEO (or not)?
Does CDN impact on SEO or not? There seems conflicting ideas as to whether they impact positively or negatively, I realise that if the page loads quicker this is a good thing for SEO and usability of course. Does Google see CDN as just cheating and a get-around for not doing the work from the ground up and using good hosting etc? Do you have any direct experience? All constructive input much appreciated!
Intermediate & Advanced SEO | | seoman101 -
Will obfuscating HTML have a bad effect on my ranking?
I would like to obfuscate my HTML so that people do not see that I used a Template on my site. Does obfuscating HTML have a bad effect on the ranking in google? Thanks!
Intermediate & Advanced SEO | | RWW0 -
PDF or HTML Page?
One of our sales team members has created a 25 page word document as a topical page. The plan was to make this into an html page with a table of contents. My thoughts were why not make it a pdf? Is there any con to using a PDF vs an html page? If the PDF was properly optimized would it perform just as well? The goal is to have folks click back to our products and hopefully by after reading about how they work.
Intermediate & Advanced SEO | | Sika220 -
How to detect a bad link and remove ?
As per google penguin, all the low quality back links are going to affect the website SERPS hugely. So, we need to find all the bad back links and then remove them one by one. What I would like to know is, what tool do you use to find all the bad back links ? And how do we know which is a bad back link or bad website, where our link should not be there ? Then what service what do you suggest for back links removal. I contacted LinkDelete.com and they quoted me 97$ for a month to remove all links in less than 3 weeks.
Intermediate & Advanced SEO | | monali123
Let me know, what you suggest.0 -
Is linking to search results bad for SEO?
If we have pages on our site that link to search results is that a bad thing? Should we set the links to "nofollow"?
Intermediate & Advanced SEO | | nicole.healthline0 -
Does domain WhoIs Privacy affect SEO efforts?
Hi guys, I got a hopefully quick question. I am designing a site currently that is made up of many different domain names as part of a network. I've heard that Google will penalize however is linking is passed back and forth between these domains if the registrant information was the same. I have WhoIS privacy information on all the domains to stop telemarketers and spam as well as (hopefully stop Google from getting suspicious). I'm not doing anything bad or against Google rules but I can see how they might think that if I have a huge network and links are being passed between these. It's a friend of mine who owns like 2000 domains and he wants to put legitimate information on each one and rank them higher, it's an interesting concept but I won't go into to much detail. So my question is basically, does having WhoIS privacy on all these domains, will it affect me in anyway in the SEO process? Will google count the links passing back and forth as legitimate? Or might it get suspicious and think I am spam? Are there ways to see what server it's coming from? Should all these sites be on different servers? Any help is much appreciated!
Intermediate & Advanced SEO | | itechware0