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

      Unlock flexible pricing & new endpoints
      Moz API

      Unlock flexible pricing & new endpoints

      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
    3519
    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
                • SEOguy1

                  Https pages indexed but all web pages are http - please can you offer some help?

                  Dear Moz Community, Please could you see what you think and offer some definite steps or advice.. I contacted the host provider and his initial thought was that WordPress was causing the https problem ?: eg when an https version of a page is called, things like videos and media don't always show up. A SSL certificate that is attached to a website, can allow pages to load over https. The host said that there is no active configured SSL it's just waiting as part of the hosting package just in case, but I found that the SSL certificate is still showing up during a crawl.It's important to eliminate the https problem before external backlinks link to any of the unwanted https pages that are currently indexed. Luckily I haven't started any intense backlinking work yet, and any links I have posted in search land have all been http version.I checked a few more url's to see if it’s necessary to create a permanent redirect from https to http. For example, I tried requesting domain.co.uk using the https:// and the https:// page loaded instead of redirecting automatically to http prefix version.  I know that if I am automatically redirected to the http:// version of the page, then that is the way it should be. Search engines and visitors will stay on the http version of the site and not get lost anywhere in https. This also helps to eliminate duplicate content and to preserve link juice. What are your thoughts regarding that?As I understand it, most server configurations should redirect by default when https isn’t configured, and from my experience I’ve seen cases where pages requested via https return the default server page, a 404 error, or duplicate content. So I'm confused as to where to take this.One suggestion would be to disable all https since there is no need to have any traces to SSL when the site is even crawled ?. I don't want to enable https in the htaccess only to then create a https to http rewrite rule; https shouldn't even be a crawlable function of the site at all.RewriteEngine OnRewriteCond %{HTTPS} offor to disable the SSL completely for now until it becomes a necessity for the website.I would really welcome your thoughts as I'm really stuck as to what to do for the best, short term and long term.Kind Regards

                  Web Design | | SEOguy1
                  0
                • SOS_Children

                  Can external links in a menu attract a penalty?

                  We have some instances of external links (i.e. pointing to another domain) in site menus. Although there are legitimate reasons (e.g. linking to a news archive kept on a separate domain) I understand this can be considered bad from a usability perspective. This begs the question - is this bad for SEO? With the recent panda changes we've seen certain issues which were previously "only" about usability attract SEO penalties, but I can't find any references to this example. Anyone have thoughts / experience?

                  Web Design | | SOS_Children
                  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
                • ScottMcPherson

                  Will google penalize a website for using a table layout?

                  I just got a new client today and his entire website layout and structure is using tables instead of divs. This client is on a tight budget and wants to avoid unnecessary hours for re-coding the website, but at the same time he wants me to improve his SEO organically. This is the first time I've been asked to do work on an existing website that uses pure tables for the entire layout and I'm wondering if this effects the SEO in any way. So my question is, will tables effect rankings and SEO in any way?

                  Web Design | | ScottMcPherson
                  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
                • RetroOnline

                  Duplicate H1 tag IF it holds SAME text?

                  Hello people, I know that majority of SEO gurus (?) claim that H1 tag should only be used once per page. In the landing page design I'm working with, we actually need to repeat our core message stated in H1 & H2 - at the bottom of the page. Now the question is: Can that in any way cause any ranking penalty from big G? In my eyes that is not attempt to over optimize page as it contains SAME info as the H1 & H2 at the top of the page. Confusing, so I'm hope that some SEO gurus here will share some light on this. Thanks in advance!

                  Web Design | | RetroOnline
                  0
                • eseyo

                  Site-wide footer links or single "website credits" page?

                  I see that you have already answered this question before back in 2007 (http://www.seomoz.org/qa/view/2163), but wanted to ask your current opinion on the same question: Should I add a site-wide footer link to my client websites pointing to my website, or should I create a "website credits" page on my clients site, add this to the footer and then link from within this page out to my website?

                  Web Design | | eseyo
                  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.