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

                • Dan-Louis

                  How to fix non-crawlable pages affected by CSS modals?

                  I stumbled across something new when doing a site audit in SEMRUSH today ---> Modals. The case: Several pages could not be crawled because of (modal:) in the URL. What I know: "A modal is a dialog box/popup window that is displayed on top of the current page" based on CSS and JS. What I don't know: How to prevent crawlers from finding them.

                  Web Design | | Dan-Louis
                  0
                • Myles92

                  Is having a site map page necessary?

                  Hello all! So I know having a sitemap XML file is important to include in your robots.txt file.  I also know it is important to submit your XML sitemap to Google and Bing.  However, I am wondering if it is beneficial for your site's SEO value to have a sitemap page displayed on your website? Or is this just a redundant action if you have already done the above two actions with your XML sitemap? Thanks in advance!

                  Web Design | | Myles92
                  0
                • BearPaw88

                  Is it against google guidelines to use third party review sites as well as have reviews on my site marked up with schema?

                  So, i look after a site for my family business. We have teamed up with the third party site TrustPilot because we like the way it enables us to send out reviews to our customers directly from our system. It's been going great and some of the reviews have been brilliant. I have used a couple of these reviews on our site and marked them up with: REVIEW CONTENT We work in the service industry and so one of the problems we have found is that getting our customers to actually go online and leave a review. They normally just leave their comments on a job sheet that the workers have signed when they leave. So I have created a page on our site where we post some of the reviews the guys receive too. I have used the following: REVIEW TITLE REVIEW Written by: CUSTOMER NAME Type of Service:House Removal Date published: DATE PUBLISHED 10 / 10 stars I was just wondering I was told that this could be against googles guidelines and as i've seen a bit of a drop in our rankings in the last week or so i'm a little concerned. Is this getting me penalised? Should I not use my reviews referencing the ones on trust pilot and should i not have my own reviews page with rich snippets?

                  Web Design | | BearPaw88
                  1
                • codyfrew

                  Moving to new site. Should I take old blog posts with me?

                  Our company website has needed a complete overhaul for some time now and the new one is almost ready to go live.  We also have a separate "news" site that is houses around 800 blog posts and news items.  (That news site will be thrown away because it's on a completely different domain and causes confusion.) So we have a main site with about 100 decent blog posts and a separate news site with 800 poor posts. I plan on bringing all the main site blog posts over to the new site (both WordPress), but my question is whether or not to bring over the news site posts?  All, handful, none? Another issue is the news site doesn't have Google Analytics, so I'm not sure if any posts actually generate traffic, but I can from the main site we do get some referrals from it. As far as quality of content goes, it's poor.  Not sure who wrote it all, but it's mainly text press releases that aren't very interesting. Is it worth bringing over for SEO purposes or simply delete the site and create a mass redirect so all of those pages will direct to the new website's blog page? Any help is greatly appreciated.

                  Web Design | | codyfrew
                  0
                • Discountvc

                  301 Redirect all pictures when moving to a new site?

                  We have 30,000 pictures on our site. Moz will return 404's on some occasionally, but Google seems to ignore those. Should I 301 redirect all those images when we move to a new site lay-out? Appreciate your views!

                  Web Design | | Discountvc
                  0
                • Bill_K

                  Old site to new WordPress site - Client concerned about Yahoo Ranking

                  Hello, Back Story I have a client (law firm) who has a large .html website. He has been doing his own SEO for years and it shows. I think the only reason he reached out to a professional is because he got a huge penalty from Google last fall and fell very far down in rankings. Although, he still retains a #1 spot in Yahoo for his site for the keyword phrase he wants. I have been creating a new WordPress theme for the client and creating all new pages and updating the formatting/SEO. From the beginning I have told the client that when we delete the old site and install a new WordPress site (same domain name, but different page hierarchy) he will take a bump in the search engines until all the 301 redirects get sorted out. I told him I can't guarantee any time frame of how long the dip in SEO will last. Some sites bounce right back while others take longer. Last week, during a discussion, he tells me that if he loses his #1 ranking on Yahoo for any length of time he thinks he will go out of business. Needless to say I was a little taken back. When it comes to SEO I use best practice techniques, do my research, stay on top of trends but I never guarantee rankings when moving to a new site. I'm thinking of ways I can help elevate any type of huge SEO drop off and help the client. Here is what I was thinking of suggesting to the client and I would love some feedback. Main Question He has another domain he isn't doing anything with. It's pretty much his domain name with pc added. I was thinking about using that domain to create a simple 1-2 page WordPress website with brand new content (no duplicate content) aimed at attracting his keyword phrase. I would do as much SEO as I could with a 1-2 page site and give it a month or so to see if this smaller site can get into the top #10 in Yahoo, or higher. Then, when we move the site he will still have a website on the first page of Yahoo for his keyword phrase. I hope I explained it clearly 🙂 I would be open to any suggestions anyone may have. Thanks

                  Web Design | | Bill_K
                  0
                • Atlanta-SMO

                  ECWID How to fix Duplicate page content and external link issue

                  I am working on a site that has a HUGE number of duplicate pages due to ECWID ecommerce platform.  The site is built with Joomla!  How can I rectify this situation?  The pages also show up as "external " links on crawls...  Is it the ECWID platform?  I have never worked on a site that uses this. Here is an example of a page with the issue (there are 6280 issues) URL: http://www.metroboltmi.com/shop-spare-parts?Itemid=218&option=com_rokecwid&view=ecwid&ecwid_category_id=3560081

                  Web Design | | Atlanta-SMO
                  0
                • bronxpad

                  CSS vs Javascript vs JQuery drop down navigation

                  For a user / seo perspective, what is the best way to code a drop down menu nav bar? Is it best to use css, javascript or a scripting library like jquery? I am thinking about overall best practice that will not have a negative impact on serps. I am also thinking about what will work best on all types of devices i.e. desk tops, lap tops, smart phones and tablets. What are the Pro's & Cons of Using CSS for Drop Down Menus. What are the Pro's & cons of using Javascript for drop down menus. And the same question for jquery. Thank you all in advance for your ideas.

                  Web Design | | bronxpad
                  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.