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 your brand’s footprint in AI search
      Moz Pro

      Track your brand’s footprint in AI search

      Learn more
    • 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.

      Let your business shine with Listings AI

      Let your business shine with Listings AI

      Get found
    • 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
    3653
    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

                • 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
                • vtmoz

                  WordPress redirects are taking too long to navigate: Anyone ever faced this?

                  Hi community, We are using wordpress website. We have redirected hundreds of URLs from wordpress redirect manager for last 10 years around. Suddenly from last one week, the redirects are taking too long to navigate to the pages; like around 1 minute. Could you anybody face the same issue? Please help me on this. Thanks

                  Web Design | | vtmoz
                  0
                • RobertFisher

                  Anyone using CloudFlare on multiple sites?

                  We are considering using CloudFlare as a CDN for a large group of sites. The fees are $5 to $200 depending on many factors. We tried the free trial on one site and were impressed with the results. I am wondering if any of you have any longer term experience with this and performance metrics, etc.

                  Web Design | | RobertFisher
                  1
                • InvoqMarketing

                  Duplicate content on websites for multiple countries

                  I have a client who has a website for their U.S. based customers. They are currently adding a Canadian dealer and would like a second website with much of the same info as their current website, but with Canadian contact info etc. What is the best way to do this without creating duplicate content that will get us penalized? If we create a website at ABCcompany.com and ABCCompany.ca or something like that, will that get us around the duplicate content penalty?

                  Web Design | | InvoqMarketing
                  0
                • DRSearchEngOpt

                  Best way to indicate multiple Lang/Locales for a site in the sitemap

                  So here is a question that may be obvious but wondering if there is some nuance here that I may be missing. Question:  Consider an ecommerce site that has multiple sites around the world but are all variations of the same thing just in different languages.  Now lets say some of these exist on just a normal .com page while others exist on different ccTLD's.  When you build out the XML Sitemap for these sites, especially the ones on the other ccTLD's, we want to ensure that using <loc>http://www.example.co.uk/en_GB/"</loc> <xhtml:link<br>rel="alternate"
                  hreflang="en-AU"
                  href="http://www.example.com.AU/en_AU/"
                  />
                  <xhtml:link<br>rel="alternate"
                  hreflang="en-NZ"
                  href="http://www.example.co.NZ/en_NZ/"
                  /> Would be the correct way of doing this.  I know I have to change this for each different ccTLD but it just looks weird when you start putting about 10-15 different language locale variations as alternate links.  I guess I am just looking for a bit of re-affirmation I am doing this right.</xhtml:link<br></xhtml:link<br> Thanks!

                  Web Design | | DRSearchEngOpt
                  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
                • mdorville

                  Subdomains, duplicate content and microsites

                  I work for a website that generates a high amount of unique, quality content. This website though has had development issues with our web builder and they are going to separate the site into different subdomains upon launch. It's a scholarly site so the subdomains will be like history and science and stuff. Don't ask why aren't we aren't using subdirectories because trust me I wish we could. So we have to use subdomains and I'm wondering a couple questions. Will the duplication of coding, since all subdomains will have the same design and look, heavily penalize us and is there any way around that? Also if we generate a good amount of high quality content on each site could we link all those sites to our other site as a possible benefit for link building? And finally, would footer links, linking all the subdirectories, be a good thing to put in?

                  Web Design | | mdorville
                  0
                • JoshTurner

                  Changing from Squarespace to Wordpress - Will I Lose My Rankings?

                  I have a friend who has a squarespace site that is giving him lots of trouble.  For one, even though it is supposed to redirect to GreenSpaceConstruct.com...Bing and Yahoo don't seem to recognize this domain.  Instead, they show greenlightconstruct.squarespace.com in the serp's.  Oddly, Google shows the site as GreenSpaceConstruct.com. The site is ranking well for some terms.  I'm afraid that converting to wordpress will hurt his rankings in the short term.  If bing and yahoo are crawling this squarespace domain, and he moves it...is there a way not to just completely lose the rankings? Thanks for any thoughts.  Much appreciated! Josh

                  Web Design | | JoshTurner
                  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 - 2026 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.