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
      • SEO Q&A
      • Webinars, Whitepapers, & Guides
    • Blog
    • Why Moz
      • Agency Solutions
      • Enterprise Solutions
      • Small Business Solutions
      • Case Studies
      • 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.

      NEW Keyword Suggestions by Topic
      Moz Pro

      NEW Keyword Suggestions by Topic

      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.

      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
      • 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.

      • Case Studies

        Explore how Moz drives ROI with a proven track record of success.

      • 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. Research & Trends
    3. Algorithm Updates
    4. Does the use of an underscore in filenames adversely affect SEO

    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.

    Does the use of an underscore in filenames adversely affect SEO

    Algorithm Updates
    2
    3
    1847
    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.
    • FFTCOUK
      FFTCOUK last edited by

      We have had a page which until recently was ranked first or second by Google UK and also worldwide for the term "Snowbee".  It is now no longer in the top 50.

      I ran a page optimization report on the url and had a very good score.  The only criticism was that I had used an atypical character in the url.  The only unusual character was an underscore "_"    We use the underscore in most file names without apparent problems with search engines. In fact they are automatically created in html files by our ecommerce software, and other pages do not seem to have been so adversely affected.

      Should we discontinue this practice?  It will be difficult but I'm sure we can overcome this if this is the reason why Google has marked us down.

      I attach images of the SEO Report pages

      8fDPi.jpg AdLIn.jpg

      1 Reply Last reply Reply Quote 0
      • FFTCOUK
        FFTCOUK @SL_SEM last edited by

        Thanks Charles.

        The link was useful.

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

          Underscores are not good to use in URLs as search engines do not treat it as a space or delimiter. So Snow_Bee would be considered Snowbee. I believe search engines have gotten better at figuring out when a word like this should be two words, but the best practice for this is to use hyphens (e.g. Snow-Bee).

          Here is a video from Matt Cutts about it:

          http://www.youtube.com/watch?feature=player_embedded&v=AQcSFsQyct8

          This wouldn't cause you to drop off though especially if you ranked previously. Is it just for this one term or is it for multiple terms? I would be looking at link backgrounds to be sure there weren't any spammy links getting devalued that maybe didn't get caught before, or perhaps review the content of the page to see if it might have gotten caught by the penguin anti-spamminess updates.

          FFTCOUK 1 Reply Last reply Reply Quote 3
          • 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

          • Sam09schulz

            Does changing text content on a site affects seo?

            HI, i have changed some h1 and h2 , changed and added paragraphs,fixed plagiarism,grammar and added some pics with alt text, I have just done it today, I am ranking on second page QUESTION-1 is it gonna affect my 2 months SEO efforts? QUESTION -2 Do I have to submit sitemap to google again? QUESTION-3 does changing content on the site frequently hurts SEO?

            Algorithm Updates | | Sam09schulz
            0
          • martin1970

            Is using REACT SEO friendly?

            Hi Guys Is REACT SEO friendly? Has anyone used REACT and what was the results? Or do you recommend something else that is better suited for SEO? Many thanks for your help in advance. Cheers Martin

            Algorithm Updates | | martin1970
            0
          • micromano

            Does using parent pages in WordPress help with SEO and/or indexing for SERPs?

            I have a law office and we handle four different practice areas. I used to have multiple websites (one for each practice area) with keywords in the actual domain name, but based on the recommendation of SEO "experts" a few years ago, I consolidated all the webpages into one single webpage (based on the rumors at the time that Google was going to be focusing on authorship and branding in the future, rather than keywords in URLs or titles). Needless to say, Google authorship was dropped a year or two later and "branding" never took off. Overall, having one webpage is convenient and generally makes SEO easier, but there's been a huge drawback: When my page comes up in SERPs after searching for "attorney" or "lawyer" combined with a specific practice area, the practice area landing pages don't typically come up in the SERPs, only the front page comes up. It's as if Google recognizes that I have some decent content, and Google knows that I specialize in multiple practice areas, but it directs everyone to the front page only. Prospective clients don't like this and it causes my bounce rate to be high. They like to land on a page focusing on the practice area they searched for. Two questions: (1) Would using parent pages (e.g. http://lawfirm.com/divorce/anytown-usa-attorney-lawyer/ vs. http://lawfirm.com/anytown-usa-divorce-attorney-lawyer/) be better for SEO? The research I've done up to this point appears to indicate "no." It doesn't make much difference as long as the keywords are in the domain name and/or URL. But I'd be interested to hear contrary opinions. (2) Would using parent pages (e.g. http://lawfirm.com/divorce/anytown-usa-attorney-lawyer/ vs. http://lawfirm.com/anytown-usa-divorce-attorney-lawyer/) be better for indexing in Google SERPs? For example, would it make it more likely that someone searching for "anytown usa divorce attorney" would actually end up in the divorce section of the website rather than the front page?

            Algorithm Updates | | micromano
            0
          • Parse.ly

            Does Google use dateModified or date Published in its SERPs?

            I was curious as to the prioritization of dateCreated / datePublished and dateModified in our microdata and how it affects google search results. I have read some entries online that say Google prioritizes dateModified in SERPs, but others that claim they prioritize datePublished or dateCreated. Do you know (or could you point me to some resources) as to whether Google uses dateModified or date Published in its SERPs? Thanks!

            Algorithm Updates | | Parse.ly
            0
          • Alexogilvie

            With regards to SEO is it good or bad to remove all the old events from our website?

            Our website sells tickets for various events across the UK, we do have a LOT of old event pages on our website which simply say SOLD OUT. What is the best practice? Should these event pages be removed and a 301 redirect added to redirect to the home page? Or should these pages remain in tact with simply SOLD OUT on the page?

            Algorithm Updates | | Alexogilvie
            0
          • Chaits

            Non .Com or .Co Versus .ca or .fm sites - In terms of SEO value

            We are launching a new site with a non traditional top level domain . We were looking at either .ca or .in as we are not able to get the traditional .com or .co or .net etc . I was wondering if this has any SEO effect ? Does Google/Bing treat this domain differently .Will it be penalized ? Note : My site is a US based site targeting US audience

            Algorithm Updates | | Chaits
            0
          • Sexandmetal

            Is changing your meta titles frequently good SEO Practice

            Greetings, Im a new SEO and really knew nothing until signing up to SEOMoz. After reading the SEO101 and gathering as much information in a short period of time things started  to become a little clearer. So I started my first campaign used my new SEO knowledge and input all of my meta information. Then I waited a few days to see what happened with my search result. We had never ranked for a single keyword before mind you. So a couple/few of days go by and I started punching in my keywords and looking through the pages. There I was page three. I was SO happy. I read the entire SEO101 again, realized a little more about what I had to do. So I started changing everything up, adding pictures, I found out what a IMG ALT Attributes were in the HTML editor, bolded text and all the other things I missed the first time around. Three days go by and I move up again. I start to notice my traffic is increasing and I am actually getting organic hits through search traffic. This has never happened before. I am over the moon. But I realize that I have my main focus keyword as the second key word in my title tag. So I switch the two words around, wait a few more days. Here's why I ask my question. The original title tag was still showing up and I was on the first page for both keywords, and I could see both title tags when searching for either keyword. So; Is changing your meta titles frequently good SEO Practice ? Warmest regards, Michael S&M Warning: adult site, NSFW

            Algorithm Updates | | Sexandmetal
            0
          • BluespaceCreative

            Hyphens vs Underscores

            I am optimizing a site which uses underscores rather than hyphens as word separators (such_as_this.php vs. such-as-this.php). Most of these pages have been around since 2007, and I am hesitant to just redirect to a new page because I am worried it will cause the rankings to slip. Would you recommend changing the file names to be in hyphenated format and place 301 redirects on the pages with underscores, or stick with the existing pages? Is there anything else that would work better? Thanks!

            Algorithm Updates | | BluespaceCreative
            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
          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.