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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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.

      Save 36% now!
      Moz Pro

      Save 36% now!

      Sign up
    • 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
    3560
    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

                • pastcatch

                  Site Migration due to Corporate Acquisition

                  Hey everyone, Wanted to check-in on something that I've been thinking way too much about lately. I'll do my best to provide background, but due to some poor planning, it is rather confusing to wrap your head around. There are currently three companies involved, Holding Corp (H Corp) and two operating companies, both in the same vertical but one B2B and the other is B2C. B2C corp has been pushed down the line and we're focusing primarily on H Corp and B2B brand. Due to an acquisition of H Corp and all of it's holdings, things are getting shuffled and Ive been brought in to ensure things are done correctly. What's bizarre is H Corp and it's web property are the dominant authority in SERPs for the B2B brand. As in B2B brand loses on brand searches to H Corp, let alone any product/service related terms. As such, they want to effectively migrate all related content from H Corp site to B2B brand site and handover authority as effectively as possible. Summary: Domain Migration from H Corp site to B2B Brand site. Ive done a few migrations in my past and been brought in to recover a few post-launch so I have decent experience and a trusted process. One of my primary objectives initially is change as little as possible with content, url structure (outside the root) etc so 301s are easy but also so it doesn't look like we're trying to play any games. Here's the thing, the URL structure for H Corp is downright bad from both a UX perspective and a general organizational perspective. So Im feeling conflicted and wanted to get a few other opinions. Here are my two paths as I see and Id love opinions on both: stick with a similar URL structure to H Corp through the migration (my normal process) but deviate from pretty much every best practice for structuring URLs with keywords, common sense and logic. Pro: follow my process (which has always worked in the past) Con: don't implement SEO/On-page best practices at this stage and wait for the site redesign to implement best practices (more work) Implement new URL structure now and deviate from my trusted process. Do you see a third option? Am I overthinking it? Other important details: B2B brand is under-going a site redesign, mostly aesthetic but their a big corporation and will likely take 6-9 months to get up. Any input greatly appreciated. Cheers, Brent

                  Web Design | | pastcatch
                  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
                • ScottImageWorks

                  How to bounce back after a new url & new site design?

                  About a month ago, my company changed domains (from the long-established www.imageworksstudio.com to the new www.imageworkscreative.com) and also did a complete overhaul of our site.  We tried to do everything necessary to keep Google happy as we went through this change, but we've suffered a drastic loss of both rankings and traffic. I know that can happen as a result of a redesign AND as a result of a new domain, but I'm wondering how long you would expect it to take before we bounced back and also, what can we do in the meantime to improve?

                  Web Design | | ScottImageWorks
                  0
                • Robertnweil1

                  Having a second homepage for a site would affect my SEO?

                  Hello guys, One of our clients is planning to have a new landing page for any users hitting the site for the first time. (returning users will still see the current homepage based on cookies ... in other words, the site would technically have 2 home pages). According to this client, they are planning to do something like this: https://www.websitename.com/ (for returning visitors) https://www.websitename.com/newuser (for first time visitors) Our instinct is that is not great to have 2 home pages (that would affect the SEO campaign we are managing for this company) and we are not sure how to handle this. That's why we would appreciate your opinion regarding this topic: From an SEO perspective, do you think this is a good idea? If not, what would you guys do differentiate first-time visitors vs returning visitors without affecting SEO? Maybe just a pop-up? Thanks in advance for your help !

                  Web Design | | Robertnweil1
                  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
                • EcommerceSite

                  What is the best tool to view your page as Googlebot?

                  Our site was done with asp.net and a lot of scripting. I want to see what Google can see and what it can't. What is the best tool that duplicates Googlebot? I have found several but they seem old or inaccurate.

                  Web Design | | EcommerceSite
                  0
                • jensonseo

                  Anyone Got An Honest Opinion Of WPengine

                  Hi Guys, I wonder if any of you have used / are using WPengine. I am had thought about using them before and was really impressed by there load speeds. They are pretty expensive though when compared to others. Now, I already have ok hosting but everything is run through a cdn and S3 for streaming HD Videos. Is it worthwhile shelling out for WP engine (pro) or is it better to just stick with an OK host and cdn. Opinions are greatly appreciated. Thanks Jenson

                  Web Design | | jensonseo
                  0
                • zharriet

                  Separate .mobi site or make .com site mobile friendly?

                  Our website now has enough mobile traffic to justify going mobile friendly, which it is not at this time. I am in favor of making a separate .mobi site designed specifically for mobile phones and smart phones for several reasons. It is cheaper, faster, and easier to accomplish. I think our mobile users will have a good experience though obviously not as much info as our full site. I would use ourdomain.mobi with link or a redirect for mobile users from from the main site. My top three choices for implementing that are http://allwebcodesign.com/setup/mobi-templates.htm#detailsarea
                  Template that can be viewed by mobile or desktop. http://www.onbile.com/ http://www.networksolutions.com/mobile-website/index.jsp Does this seem like a good solution?

                  Web Design | | zharriet
                  1

                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.