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
-
Does changing template for a wordpress site affect SEO
Hi I work for an Inventory Management Software company and we already have a WordPress site but I am currently working on re-designing of our WordPress site and in this process, we are looking for moving to a new template. I want to know what will be the impact on SEO performance while taking a shift to a new template.
Intermediate & Advanced SEO | | Cin7_Marketing0 -
Default Wordpress 301 Redirects of JS and CSS files. Bad for SEO & How to Fix?
Hi there: We are developers with some digital marketing expertise, but a current issue has us perplexed. An outside SEO firm has asked us to clean up a large number of 301 redirects. Most of these are 'default' Wordpress behavior that relate to calling the latest version of a JS or CSS file. For instance, a JS file is called with this: https://websitexyz.com/wp-includes/js/wp-embed.min.js?ver=4.9.1 but ultimately redirects to this: https://websitexyz.com/wp-includes/js/wp-embed.min.js. We are being asked to prevent the redirect from happening by, presumably, calling the ultimate file to begin with. The issue is that, as far as we know, there's no easy way to alter WP behavior to call the ultimate file to begin with. Does anyone have any thoughts on this? Thanks.
Intermediate & Advanced SEO | | Daaveey0 -
Images with a token in the url, in Drupal. How does it affect to SEO?
Hi everyone! I am checking now a website that works with Drupal, and I found that images have urls like this... http://www.brandname.com/sites/default/files/styles/directory_xyz/public/name-of-the-picture.png?itok=T89RpzrK I was wondering how an URL like that with the token at the and, can affect to SEO. I cound't find anything. Anyone knows? Thank you!
Intermediate & Advanced SEO | | teconsite0 -
Double hyphen in URL - bad?
Instead of a URL such as domain.com/double-dash/ programming wants to use domain.com/double--dash/ for some reason that makes things easier for them. Would a double dash in the URL have a negative effect on the page ranking?
Intermediate & Advanced SEO | | CFSSEO0 -
Will the use of lightbox affect SEO?
I am looking to condense a features list on my pricing page. it is currently a static list however I want the user to click a button and a full list of standard features will pop up in a lightbox. How will this affect my SEO? Can Google read content in a lightbox?
Intermediate & Advanced SEO | | ParkerSoftware0 -
If you have an unlimited SEO budget, what would you do?
Here's a bit of background information: I've achieved the targets and is now being offered what is essentially an unlimited budget. I have a nice list of ideas but thought I would the brilliant people here at the SEOMOZ community what they would do. So as to promote as much response as possible, I'm going to keep my list to myself for now. And by "SEO", I mean I can do things like content strategy, blogging, infographics, etc. Shoot away!
Intermediate & Advanced SEO | | andrep0 -
Changing Servers + Effect on SEO
Hi, I am currently with a very slow server. Our website takes quite a while to load, FTP is very slow and content changes with Wordpress are slow because even the database connection takes a lot of time. However, my website ranks very well. Traffic has doubled in the last year. Our domain has been registered with this company for over 10 years. I am wondering if changing to a different hosting provider would have an effect on my rankings due to the change in IP.
Intermediate & Advanced SEO | | MangoMan160 -
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