Efficient CSS Selectors
-
How much practical impact do inefficient CSS selectors have on page speed?
-
Hi Brett,
Poorly written CSS selectors do not have much, if any, impact on site speed. I've never seen an issue where bad CSS changed the load of a page I was working on. That said, writing clean CSS can be helpful in a lot of other areas, including code maintainability.
There is a good article on this that you might find interesting: http://css-tricks.com/efficiently-rendering-css/
I hope that helps.
Matthew
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
-
Content that's behind CSS..
For content that's been loaded onto the page.. but it requires a click for it to be revealed.. as in a slider, or a tab, to save space or for a page's organization.. what are your thoughts on Google counting or weighting this content? It would make sense for Google to give it partial or no weighting as if Google attributes the content to being there, its confusion for the user to land on the page and have to find it/click around to find it.. Sorry if this is an obvious question to SEOs.. I've always assumed as long as it was loaded, it'd be mostly counted.. but I'm beginning to doubt my assumption. Thanks!
On-Page Optimization | | speedcommerce0 -
Eliminate render-blocking CSS in above the fold content with shopify
Hello, It seems that my shopify website needs to eliminate render-blocking CSS in above the fold content to get better mobile speed and I don't see or find anything about how this could be done. I have succeeded with a wordpress site but the way things are restricted with shopify, I have not been able to do the same. The other thing would be to leverage browser caching which I have no clue how it can be done with shopify either. Thanks!
On-Page Optimization | | Mabo320 -
How many css and Javascript on ecommerce site?
Hello, I want any tool which seach css and javascript of whole ecommerce cite? Please suggest. Thanks! Dev
On-Page Optimization | | devdan0 -
Having a terrible time ordering the CSS Styles and Scripts in my header
Hi Guys, I am having a terrible time trying to get the correct optimized (for speed, none blocking etc) order for loading my external css and JS. I follow the recommendations from Google Page Speed or Chrome Audit and it seems no matter where I move the CSS file too (top or bottom) it complains about more blocking and stopping rendering of the page. My URL is http://www.MyFairyTaleBooks.com if some smart person out there could help me figure out what I am doing wrong and the order in which my should be organized I'd appreciate it! Oh I'm not a developer but I can re-arrange text in a file! 😉 Thank you!
On-Page Optimization | | MyFairyTaleBooks
Dinesh0 -
Does css float affect SEO?
It is generally believed that the closer the content is to the top of the page, the better it is for SEO. If that's incorrect, please let me know. I have a 2 column site where the left menu is navigation and right side is content. Obviously, the left menu appears in the code before the content does, but I can flip them around via css float. If I do that, the content will appear on the left visually, even though in the code it still comes after the left side navigation. Do either positions affect seo?
On-Page Optimization | | cmp1010 -
Combining CSS
One recommendation from a page speed analysis of my site was to combine CSS (external style sheets) but after reading more on the topic others say that this is not always best. Any thoughts on either approach?
On-Page Optimization | | casper4340 -
CSS background images weight impact
Hi,
On-Page Optimization | | GianniCuccu
do you think that the use of a single 1.8Mb background image sitewide could have a big negative impact and make a website disappear from SERPS? thank you0 -
Are Amazon meta tags efficient?
We are probably all familiar with general and Google guidelines for writing title and description tags. But Amazon. com often create another structure where they put in a) amazon.com, b) product name or description and c) the Amazon category the product is featured in, like this: | Amazon.com: Mac Motion Chairs Model 2-Piece Recliner with Matching Ottoman Mocha Microfiber with Walnut Frame: Home & Garden Is this a well developed description tag? |
On-Page Optimization | | KnutDSvendsen
|0