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.
Is "last modified" time in XML Sitemaps important?
-
My Tech lead is concerned that his use of a script to generate XML sitemaps for some client sites may be causing negative issues for those sites.
His concern centers around the fact that the script generates a sitemap which indicates that every URL page in the site was last modified at the exact same date and time. I have never heard anything to indicate that this might be a problem, but I do know that the sitemaps I generate for other client sites can choose server response or not.
What is the best way to generate the sitemap? Last mod from actual time modified, or all set at one date and time?
-
Glad to be of help Sha
-
Thanks Alan,
I will continue to use the server response setting when generating other sitemaps and recommend that our Techs ditch the home grown script that assigns the single date and time in future.
II must say also, it is great to have such clear and reliable advice - very glad to have you around!
Thanks again.
-
Sitemap.xml files are one of many "hints" search engines use to evaluate, classify and otherwise associate relevance, importance and freshness of individual pages, and in turn, an entire site.
When the entire file flags every page with the same date/time it can have a negative impact, purely from the single-point signal perspective. If the actual pages themselves have different date/time stamps at the HTML code level, those would counter the sitemap.xml file reporting, and either resolve it or just cause confusion.
Any time search engines have a potential conflict that needs to be resolved, the potential for less than maximum value exists.
Because of these combined potential problems, SEO best practices dictate that this issue be resolved, so as to ensure it does not, in fact, lead to problems, however minor they might be on a per-page basis. If resolving the issue takes an extensive amount of time, an evaluation of how important the issue is to overall SEO. At a certain point, you cross into the realm of diminishing returns.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
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.
Related Questions
-
Desktop & Mobile XML Sitemap Submitted But Only Desktop Sitemap Indexed On Google Search Console
Hi! The Problem We have submitted to GSC a sitemap index. Within that index there are 4 XML Sitemaps. Including one for the desktop site and one for the mobile site. The desktop sitemap has 3300 URLs, of which Google has indexed (according to GSC) 3,000 (approx). The mobile sitemap has 1,000 URLs of which Google has indexed 74 of them. The pages are crawlable, the site structure is logical. And performing a Landing Page URL search (showing only Google/Organic source/medium) on Google Analytics I can see that hundreds of those mobile URLs are being landed on. A search on mobile for a longtail keyword from a (randomly selected) page shows a result in the SERPs for the mobile page that judging by GSC has not been indexed. Could this be because we have recently added rel=alternate tags on our desktop pages (and of course corresponding canonical ones on mobile). Would Google then 'not index' rel=alternate page versions? Thanks for any input on this one. PmHmG
Technical SEO | | AlisonMills0 -
"5XX (Server Error)" - How can I fix this?
Hey Mozers! Moz Crawl tells me I am having an issue with my Wordpress category - it is returning a 5XX error and i'm not sure why? Can anyone help me determine the issue? Crawl Issues and Notices for: http://www.refusedcarfinance.com/news/category/news We found 1 crawler issue(s) for this page. High Priority Issues 1 5XX (Server Error) 5XX errors (e.g., a 503 Service Unavailable error) are shown when a valid request was made by the client, but the server failed to complete the request. This can indicate a problem with the server, and should be investigated and fixed.
Technical SEO | | RocketStats0 -
Removing Redirected URLs from XML Sitemap
If I'm updating a URL and 301 redirecting the old URL to the new URL, Google recommends I remove the old URL from our XML sitemap and add the new URL. That makes sense. However, can anyone speak to how Google transfers the ranking value (link value) from the old URL to the new URL? My suspicion is this happens outside the sitemap. If Google already has the old URL indexed, the next time it crawls that URL, Googlebot discovers the 301 redirect and that starts the process of URL value transfer. I guess my question revolves around whether removing the old URL (or the timing of the removal) from the sitemap can impact Googlebot's transfer of the old URL value to the new URL.
Technical SEO | | RyanOD0 -
"nofollow pages" or "duplicate content"?
We have a huge site with lots of geographical-pages in this structure: domain.com/country/resort/hotel domain.com/country/resort/hotel/facts domain.com/country/resort/hotel/images domain.com/country/resort/hotel/excursions domain.com/country/resort/hotel/maps domain.com/country/resort/hotel/car-rental Problem is that the text on ie. /excursions is often exactly the same on .../alcudia/hotel-sea-club/excursion and .../alcudia/hotel-beach-club/excursion The two hotels offer the same excursions, and the intro text on the pages are the exact same throughout the entire site. This is also a problem on the /images and /car-rental pages. I think in most cases the only difference on these pages is the Title, description and H1. These pages do not attract a lot of visits through search-engines. But to avoid them being flagged as duplicate content (we have more than 4000 of these pages - /excursions, /maps, /car-rental, /images), do i add a nofollow-tag to these, do i block them in robots.txt or should i just leave them and live with them being flagged as duplicate content? Im waiting for our web-team to add a function to insert a geographical-name in the text, so i could add ie #HOTELNAME# in the text and thereby avoiding the duplicate text. Right now we have intros like: When you visit the hotel ... instead of: When you visit Alcudia Sea Club But untill the web-team has fixed these GEO-tags, what should i do? What would you do and why?
Technical SEO | | alsvik0 -
404 crawl errors from "tel:" link?
I am seeing thousands of 404 errors. Each of the urls is like this: abc.com/abc123/tel:1231231234 Everything is normal about that url except the "/tel:1231231234" these urls are bad with the tel: extension, they are good without it. The only place I can find this character string is on each page we have this code which is used for Iphones and such. What are we doing wrong? Code: Phone: <a href="[tel:1231231234](tel:7858411943)"> (123) 123-1234a>
Technical SEO | | EugeneF0 -
301 for "index.php" in Web.config?
Hi there, I'm trying to create a 301 redirect for the file "index.php" but I keep getting a "fail to redirect" message in Firefox whenever I insert it into the Web.config file. <location path="index.php"></location> Is there anyway around this? Thanks for any help According to Open Site Explorer, there are about 500 links to my index file but it only has a 302 status so will not be passing link juice.
Technical SEO | | tdsnet0 -
Include pagination in sitemap.xml?
Curious on peoples thoughts around this. Since restructuring our site we have seen a massive uplift in pages indexed and organic traffic with our pagination. But we haven't yet included a sitemap.xml. It's an ancient site that never had one. Given that Google seems to be loving us right now, do we even need a sitemap.xml - aside from the analytical benefis in WM Tools? Would you include pagination URL's (don't worry, we have no duplicate content) in the sitemap.xml? Cheers.
Technical SEO | | sichristie0 -
Hyphenated Domain Names - "Spammy" or Not?
Some say hyphenated domain names are "spammy". I have also noticed that Moz's On Page Keyword Tool does NOT recognize keywords in a non-hyphenated domain name. So one would assume neither do the bots. I noticed obviously misleading words like car in carnival or spa in space or spatula, etc embedded in domain names and pondered the effect. I took it a step further with non-hyphenated domain names. I experimented by selecting totally random three or four letter blocks - Example: randomfactgenerator.net - rand omf act gene rator Each one of those clips returns copious results AND the On-Page Report Card does not credit the domain name as containing "random facts" as keywords**,** whereas www.business-sales-sarasota.com does get credit for "business sales sarasota" in the URL. This seems an obvious situation - unhyphenated domains can scramble the keywords and confuse the bots, as they search all possible combinations. YES - I know the content should carry it but - I do not believe domain names are irrelevant, as many say. I don't believe that hyphenated domain names are not more efficient than non hyphenated ones - as long as you don't overdo it. I have also seen where a weak site in an easy market will quickly top the list because the hyphenated domain name matches the search term - I have done it (in my pre Seo Moz days) with ft-myers-auto-air.com. I built the site in a couple of days and in a couple weeks it was on page one. Any thoughts on this?
Technical SEO | | dcmike0