Skip to content
    Moz logo Menu open Menu close
    • Products
      • Moz Pro
      • Moz Pro Home
      • Moz Local
      • Moz Local Home
      • STAT
      • Moz API
      • Moz API Home
      • Compare SEO Products
      • Moz Data
    • Free SEO Tools
      • Domain Analysis
      • Keyword Explorer
      • Link Explorer
      • Competitive Research
      • MozBar
      • More Free SEO Tools
    • Learn SEO
      • Beginner's Guide to SEO
      • SEO Learning Center
      • Moz Academy
      • MozCon
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Digital Marketers
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • The Moz Story
      • New Releases
    • Log in
    • Log out
    • Products
      • Moz Pro

        Your all-in-one suite of SEO essentials.

      • Moz Local

        Raise your local SEO visibility with complete local SEO management.

      • STAT

        SERP tracking and analytics for enterprise SEO experts.

      • Moz API

        Power your SEO with our index of over 44 trillion links.

      • Compare SEO Products

        See which Moz SEO solution best meets your business needs.

      • Moz Data

        Power your SEO strategy & AI models with custom data solutions.

      Track AI Overviews in Keyword Research
      Moz Pro

      Track AI Overviews in Keyword Research

      Try it free!
    • Free SEO Tools
      • Domain Analysis

        Get top competitive SEO metrics like DA, top pages and more.

      • Keyword Explorer

        Find traffic-driving keywords with our 1.25 billion+ keyword index.

      • Link Explorer

        Explore over 40 trillion links for powerful backlink data.

      • Competitive Research

        Uncover valuable insights on your organic search competitors.

      • MozBar

        See top SEO metrics for free as you browse the web.

      • More Free SEO Tools

        Explore all the free SEO tools Moz has to offer.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      Learn more
    • Learn SEO
      • Beginner's Guide to SEO

        The #1 most popular introduction to SEO, trusted by millions.

      • SEO Learning Center

        Broaden your knowledge with SEO resources for all skill levels.

      • On-Demand Webinars

        Learn modern SEO best practices from industry experts.

      • How-To Guides

        Step-by-step guides to search success from the authority on SEO.

      • Moz Academy

        Upskill and get certified with on-demand courses & certifications.

      • MozCon

        Save on Early Bird tickets and join us in London or New York City

      Access 20 years of data with flexible pricing
      Moz API

      Access 20 years of data with flexible pricing

      Find your plan
    • Blog
    • Why Moz
      • Digital Marketers

        Simplify SEO tasks to save time and grow your traffic.

      • Small Business Solutions

        Uncover insights to make smarter marketing decisions in less time.

      • Agency Solutions

        Earn & keep valuable clients with unparalleled data & insights.

      • Enterprise Solutions

        Gain a competitive edge in the ever-changing world of search.

      • The Moz Story

        Moz was the first & remains the most trusted SEO company.

      • New Releases

        Get the scoop on the latest and greatest from Moz.

      Surface actionable competitive intel
      New Feature

      Surface actionable competitive intel

      Learn More
    • Log in
      • Moz Pro
      • Moz Local
      • Moz Local Dashboard
      • Moz API
      • Moz API Dashboard
      • Moz Academy
    • Avatar
      • Moz Home
      • Notifications
      • Account & Billing
      • Manage Users
      • Community Profile
      • My Q&A
      • My Videos
      • Log Out

    The Moz Q&A Forum

    • Forum
    • Questions
    • Users
    • Ask the Community

    Welcome to the Q&A Forum

    Browse the forum for helpful insights and fresh discussions about all things SEO.

    1. Home
    2. Digital Marketing
    3. Web Design
    4. Can anyone recommend a tool that will identify unused and duplicate CSS across an entire site?

    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.

    Can anyone recommend a tool that will identify unused and duplicate CSS across an entire site?

    Web Design
    4
    6
    3521
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as question
    Log in to reply
    This topic has been deleted. Only users with question management privileges can see it.
    • danatanseo
      danatanseo last edited by

      Hi all,

      So far I have found this one: http://unused-css.com/   It looks like it identifies unused, but perhaps not duplicates? It also has a 5,000 page limit and our site is 8,000+ pages....so we really need something that can handle a site larger than their limit.

      I do have Screaming Frog. Is there a way to use Screaming Frog to locate unused and duplicate CSS?

      Any recommendations and/or tips would be great. I am also aware of the Firefix extensions, but to my knowledge they will only do one page at a time?

      Thanks!

      1 Reply Last reply Reply Quote 0
      • danatanseo
        danatanseo @danatanseo last edited by

        I read your post at Mstoic Hemant and noticed your comment about Firefox 10. Since I couldn't get Dust-Me Spider to work in my current version of Firefox I tried downloading and installing the older version 10 as you suggested. When I did so, I received the message that the Dust-Me Spider was not compatible with this version of Firefox and it was disabled.

        We are considering purchasing the paid version of Unused CSS (http://unused-css.com/pricing) - Do you have any experience using the upgraded version? Does it deliver what it promises?

        Thanks!

        1 Reply Last reply Reply Quote 0
        • danatanseo
          danatanseo @mstoic last edited by

          Hi Hemant,

          I tried using Dust-Me in Firefox, but for some reason it won't work on this sitemap:  http://www.ccisolutions.com/rssfeeds/CCISolutions.xml

          Could it be that this sitemap is too large? I even tried setting up a local folder to store the data, but everytime I try the spider I get the message "The sitemap has no links."

          I am using Firefox 27.0.1

          danatanseo 1 Reply Last reply Reply Quote 0
          • Christy-Correll
            Christy-Correll Staff last edited by

            Hi Dana, did either of these responses help? What did you end up settling on? We'd love an update! Thanks.

            Christy

            1 Reply Last reply Reply Quote 0
            • mstoic
              mstoic last edited by

              I have an article on that here. An extension for firefox called Dust-Me selectors can help you identify unused CSS on multiple pages. It tracks all the pages you visit of a website and tracks classes and ids which were never used. Moreover, you can also give it a sitemap and it will figure out the CSS which was never used.

              danatanseo 1 Reply Last reply Reply Quote 1
              • Travis_Bailey
                Travis_Bailey last edited by

                This sounds like it might just do the trick. You'll need to have Ruby installed for it to work. If you have a Mac, it's already on there. If you have a Windows you'll need this. It's pretty easy, I installed Ruby on my Windows gaming rig. If you're running a Linux flavor, try this.

                Just take your URLs from the site crawl and make a txt file. You can compare that with your CSS file. I've never tried it on a large site, let me know how it goes for you.

                1 Reply Last reply Reply Quote 1
                • 1 / 1
                • First post
                  Last post

                Got a burning SEO question?

                Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.


                Start my free trial


                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.

                • See all categories

                Related Questions

                • PabloCulebras

                  Can I safely asume that links between subsites on a subdirectories based multisite will be treated as internal links within a single site by Google?

                  I am building a multisite network based in subdirectories (of the mainsite.com/site1 kind)  where the main site is like a company site, and subsites are focused on brands or projects of that company. There will be links back and forth from the main site and the subsites, as if subsites were just categories or pages within the main site (they are hosted in subfolders of the main domain, after all). Now, Google's John Mueller has said: <<as far="" as="" their="" url="" structure="" is concerned,="" subdirectories="" are="" no="" different="" from="" pages="" and="" subpages="" on="" your="" main="" site.="" google="" will="" do="" its="" best="" to="" identify="" where="" sites="" separate="" using="" but="" the="" is="" same="" for="" a="" single="" site,="" you="" should="" assume="" that="" seo="" purposes,="" network="" be="" treated="" one="">></as> This sounds fine to me, except for the part "Google will do its best to identify where sites are separate", because then, if Google establishes that my multisite structure is actually a collection of different sites, links between subsites and mainsite would be considered backlinks between my own sites, which could be therefore considered a link wheel, that is, a kind of linking structure Google doesn't like. How can I make sure that Google understand my multisite as a unique site? P.S. - The reason I chose this multisite structure, instead of hosting brands in categories of the main site, is that if I use the subdirectories based multisite feature I will be able to map a TLD domain to any of my brands (subsites) whenever I'd choose to give that brand a more distinct profile, as if it really was a different website.

                  Web Design | | PabloCulebras
                  0
                • RyanUK

                  Do Wordpress sites outrank SquareSpace?

                  I was a big fan of Wordpress. I used it for 10 years. However, because I run a very small business, the constant upkeep needed on WP in the end started to frustrate me in the end, so I moved to SquareSpace. However, I am beginning to question my decision, as one of my sites is struggling really badly, and I mean badly. The other sites are okay. So I started asking around, and most people are saying there shouldn't be a difference. A few people have said their Wordpress sites always outranks their SquareSpace sites. Then I read what Rand Fishkin said in the below Twitter thread, now I am even more confused. I am very reluctant to move to Wordpress, its just so much hassle. But at the same time, if a site doesn't get much traffic then it's useless. https://twitter.com/drew_pickard/status/991659074134556673 https://twitter.com/randfish/status/991974456477278209 Please let me know your thoughts and experience.

                  Web Design | | RyanUK
                  0
                • PlanetDISH

                  Will having two wordpress themes installed hurt seo?

                  We currently have 3 sites built on WordPress that have little to no blogging capabilities. Currently, all published posts show up on a /category page which does not resemble the traditional blog format and is not aesthetically pleasing. We would like to have a more traditional blog and are considering installing a second wordpress theme on the site which will strictly be used for /blog and all the posts. My question is will having the second WordPress installation on the sites hurt us in any way on the SEO front and if we go this way should we place the install in a subfolder or on a subdomain? Is there anything else we need to worry about with making this transition? Thank you in advance for the advice! Patrick

                  Web Design | | PlanetDISH
                  0
                • KempRugeLawGroup

                  Fixing Render Blocking Javascript and CSS in the Above-the-fold content

                  We don't have a responsive design site yet, and our mobile site is built through Dudamobile. I know it's not the best, but I'm trying to do whatever we can until we get around to redesigning it. Is there anything I can do about the following Page Speed Insight errors or are they just a function of using Dudamobile? Eliminate render-blocking JavaScript and CSS in above-the-fold content Your page has 3 blocking script resources and 5 blocking CSS resources. This causes a delay in rendering your page.None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript: http://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js http://mobile.dudamobile.com/…ckage.min.js?version=2015-04-02T13:36:04 http://mobile.dudamobile.com/…pts/blogs.js?version=2015-04-02T13:36:04 Optimize CSS Delivery of the following: http://fonts.googleapis.com/…:400|Great+Vibes|Signika:400,300,600,700 http://mobile.dudamobile.com/…ont-pack.css?version=2015-04-02T13:36:04 http://mobile.dudamobile.com/…kage.min.css?version=2015-04-02T13:36:04 http://irp-cdn.multiscreensite.com/kempruge/files/kempruge_0.min.css?v=6 http://irp-cdn.multiscreensite.com/…mpruge/files/kempruge_home_0.min.css?v=6 Thanks for any tips, Ruben

                  Web Design | | KempRugeLawGroup
                  0
                • Nightwing

                  What's the point of an EU site?

                  Buongiorno from 18 degrees C Wetherby UK 🙂 On this site http://www.milwaukeetool.eu/ the client wants to hold on to the EU site despite there being multiple standalone country sittes e.g. http://www.milwaukeetool.fr & http://www.milwaukeetool.co.uk Why would you ever need an EU site? I mean who ever searches for an EU site? If the client holds on to the eu site despite my position it's a waiste of time from a search perspective is the folowing the best appeasment? When a user enters the eu url or redirects to country the detected, eg I'm in Paris I enter www.milwaukeetool.eu it redirects to http://www.milwaukeetool.fr. My felling this would be the most pragmatic thing to do? Any ideas please,
                  Cioa,
                  David

                  Web Design | | Nightwing
                  0
                • Tiberiu

                  Does Google penalize duplicate website design?

                  Hello, We are very close to launching five new websites, all in the same business sector. Because we would like to keep our brand intact, we are looking to use the same design on all five websites. My question is, will Google penalize the sites if they have the same design? Thank you! Best regards,
                  Tiberiu

                  Web Design | | Tiberiu
                  0
                • Lusodados

                  Seo and CSS media queries

                  Hello to all participants! I'm starting on responsive design with css media queries and I was wondering if hidding content can, in this case, can also be bad for seo? I know that hidding content is bad (eg. display: none;), but is it also like that with responsive design or does Google see it other way? If I have a news column with title, image and text for 1024px and hide the text and image leaving just the title for 768px, or smaller, will Google consider this black hat and will it be bad for seo? are there any articles I can read about this subject, and other similar subjects? sorry for my english 🙂 thanks

                  Web Design | | Lusodados
                  1
                • JChronicle

                  My Site Is Using A Lot of Hosting Bandwidth. Suggestions?

                  My website http://www.socialseomanagement.com/ is using tons of bandwidth.  I received a message from the hosting company saying I exceeded my monthly bandwidth and it has only been a few days.  Can anyone take a look and make suggestions? Thanks

                  Web Design | | JChronicle
                  0

                Get started with Moz Pro!

                Unlock the power of advanced SEO tools and data-driven insights.

                Start my free trial
                Products
                • Moz Pro
                • Moz Local
                • Moz API
                • Moz Data
                • STAT
                • Product Updates
                Moz Solutions
                • SMB Solutions
                • Agency Solutions
                • Enterprise Solutions
                • Digital Marketers
                Free SEO Tools
                • Domain Authority Checker
                • Link Explorer
                • Keyword Explorer
                • Competitive Research
                • Brand Authority Checker
                • Local Citation Checker
                • MozBar Extension
                • MozCast
                Resources
                • Blog
                • SEO Learning Center
                • Help Hub
                • Beginner's Guide to SEO
                • How-to Guides
                • Moz Academy
                • API Docs
                About Moz
                • About
                • Team
                • Careers
                • Contact
                Why Moz
                • Case Studies
                • Testimonials
                Get Involved
                • Become an Affiliate
                • MozCon
                • Webinars
                • Practical Marketer Series
                • MozPod
                Connect with us

                Contact the Help team

                Join our newsletter
                Moz logo
                © 2021 - 2025 SEOMoz, Inc., a Ziff Davis company. All rights reserved. Moz is a registered trademark of SEOMoz, Inc.
                • Accessibility
                • Terms of Use
                • Privacy

                Looks like your connection to Moz was lost, please wait while we try to reconnect.