What’s website positioning Log File Evaluation? A Newbie’s Information

What is SEO Log File Analysis? A Beginner's Guide

Why are log recordsdata essential for website positioning?

For starters, they comprise data that’s not accessible elsewhere

Log recordsdata are additionally one of many solely methods to see Google’s precise habits in your website. They supply helpful information for evaluation and can assist inform valuable optimizations and data-driven decisions.

Performing log file evaluation frequently can assist you to know which content material is being crawled and the way typically, and reply different questions round search engines like google and yahoo crawling habits in your website.

It may be an intimidating activity to carry out, so this put up supplies a place to begin in your log file evaluation journey.

What are Log Information?

Log recordsdata are information of who accessed a web site and what content material they accessed. They comprise data on who has made the request to entry the web site (also referred to as ‘The Shopper’).

This might be a search engine bot, resembling Googlebot or Bingbot, or an individual viewing the positioning. Log file information are collected and saved by the net server of the positioning, and they’re often saved for a sure time period.


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What Information Does a Log File Include?

A log file sometimes appears to be like like this:

27.300.14.1 – – [14/Sep/2017:17:10:07 -0400] “GET https://allthedogs.com/dog1/ HTTP/1.1” 200 “https://allthedogs.com” “Mozilla/5.0 (suitable; Googlebot/2.1; +http://www.google.com/bot.html)”

Damaged down, this accommodates:

  • The consumer IP.
  • A timestamp with the date and time of the request.
  • The strategy of accessing the positioning, which might be both GET or POST.
  • The URL that’s requested, which accommodates the web page accessed.
  • The Standing Code of the web page requested, which shows the success or failure of the request.
  • The User Agent, which accommodates additional details about the consumer making the request, together with the browser and bot (for instance, whether it is coming from cellular or desktop).

Sure internet hosting options can also present different data, which may embody:

  • The host title.
  • The server IP.
  • Bytes downloaded.
  • The time taken to make the request.

Tips on how to Entry Log Information

As talked about, log recordsdata are saved by the net server for a sure time period and are solely made accessible to the webmaster(s) of the positioning.

The strategy to entry these depends upon the internet hosting answer, and the easiest way to learn the way they are often accessed is to look their docs, and even to Google it!


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For some, you may entry log recordsdata from a CDN and even your command line. These can then be downloaded domestically to your laptop and parsed from the format they’re exported in.

Why is Log File Evaluation Essential?

Performing log file evaluation can assist present helpful insights into how your web site is seen by search engine crawlers.

This can assist you inform an website positioning technique, discover solutions to questions, or justify optimizations it’s possible you’ll be trying to make.

It’s Not All About Crawl Funds

Crawl budget is an allowance given by Googlebot for the variety of pages it would crawl throughout every particular person go to to the positioning. Google’s John Mueller has confirmed that almost all of websites don’t need to worry too much about crawl price range.

Nevertheless, it’s nonetheless helpful to know which pages Google is crawling and the way regularly it’s crawling them.

I wish to view it as ensuring the site is being crawled both efficiently and effectively. Making certain the important thing pages on the positioning are being crawled and that new pages and infrequently altering pages are discovered and crawled shortly is essential for all web sites.

Totally different website positioning Analyzers

There are a number of completely different instruments accessible to assist with log file evaluation, together with:

  • Splunk.
  • Logz.io.
  • Screaming Frog Log File Analyser.

If you’re utilizing a crawling instrument, there may be typically the flexibility to mix your log file information with a crawl of your website to broaden your information set additional and achieve even richer insights with the mixed information.

Search Console Log Stats

Google additionally presents some insights into how they’re crawling your website inside the Google Search Console Crawl Stats Report.

I gained’t go into an excessive amount of element on this put up, as you will discover out extra here.

Primarily, the report permits you to see crawl requests from Googlebot for the final 90 days.

It is possible for you to to see a breakdown of standing codes and file sort requests, in addition to which Googlebot sort (Desktop, Cellular, Advert, Picture, and many others.) is making the request and whether or not they’re new pages discovered (discovery) or beforehand crawled pages (refresh).

GSC Crawl Stats Report.Screenshot from Google Search Console, September 2021

GSC additionally shares some instance pages which can be crawled, together with the date and time of the request.


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Nevertheless, it’s price making an allowance for that it is a sampled instance of pages so is not going to show the total image that you will note out of your website’s log recordsdata.

Performing Log File Evaluation

After you have your log file information, you should utilize it to carry out some evaluation.

As log file information accommodates data from each time a consumer accesses your web site, the advisable first step in your evaluation is to filter out non-search engine crawlers so you might be solely viewing the information from search engine bots.

If you’re utilizing a instrument to research log recordsdata, there needs to be an possibility to decide on which consumer agent you wish to extract the data from.

Chances are you’ll have already got some insights that you’re searching for, or questions that you could be discover solutions for.

Nevertheless, if not, listed here are some instance questions you should utilize to start your log file evaluation:

  • How a lot of my website is definitely getting crawled by search engines like google and yahoo?
  • Which sections of my website are/aren’t getting crawled?
  • How deep is my website being crawled?
  • How typically are sure sections of my website being crawled?
  • How typically are frequently up to date pages being crawled?
  • How quickly are new pages being found and crawled by search engines like google and yahoo?
  • How has site structure/architecture change impacted search engine crawling?
  • How briskly is my web site being crawled and sources downloaded?


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As well as, listed here are some solutions for issues to assessment out of your log file information and use in your evaluation.

Standing Codes

You should use log recordsdata to know how crawl price range is being distributed throughout your website.

Grouping collectively the standing codes of the pages crawled will show how a lot useful resource is being given to essential 200 standing code pages in comparison with getting used unnecessarily on damaged or redirecting pages.

You possibly can take the outcomes from the log file information and pivot them with the intention to see what number of requests are being made to completely different status codes.

You possibly can create pivot tables in Excel however might wish to think about using Python to create the pivots you probably have a considerable amount of information to assessment.

Status Code Breakdown.Screenshot from Microsoft Excel, September 2021

Pivot tables are a pleasant approach to visualize aggregated information for various classes and I discover them significantly helpful for analyzing giant log file datasets.


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You too can assessment how search engine bots are crawling indexable pages in your website, in comparison with non-indexable pages.

Combining log file information with a crawl of your web site can assist you to know if there are any pages that could be losing crawl price range if they aren’t vital so as to add to a search engine’s index.

Indexable Breakdown.Screenshot from Microsoft Excel, September 2021

Most vs. Least Crawled Pages

Log file information can even enable you to to know which pages are being crawled essentially the most by search engine crawlers.


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This permits you to make sure that your key pages are being discovered and crawled, in addition to that new pages are found effectively, and frequently up to date pages are crawled typically sufficient.

Equally, it is possible for you to to see if there are any pages that aren’t being crawled or are usually not being seen by search engine crawlers as typically as you want to.

Crawl Depth and Inside Linking

By combining your log file information with insights from a crawl of your web site, additionally, you will have the ability to see how deep in your website’s structure search engine bots are crawling.

If, for instance, you’ve gotten key product pages at ranges 4 and 5 however your log recordsdata present that Googlebot doesn’t crawl these ranges typically, it’s possible you’ll wish to look to make optimizations that may enhance the visibility of those pages.

Level Breakdown.Screenshot from Microsoft Excel, September 2021

One possibility for that is internal links, which is one other essential information level you may assessment out of your mixed log file and crawl insights.


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Typically, the extra inside hyperlinks a web page has, the simpler it’s to find. So by combining log file information with inside hyperlink statistics from a website crawl, you may perceive each the construction and discoverability of pages.

You too can map bot hits with inside hyperlinks and conclude whether or not there’s a correlation between the 2.

Key Website Classes

Segmenting information from log recordsdata by folder construction can help you determine which classes are visited essentially the most regularly by search engine bots, and guarantee crucial sections of the positioning are seen typically sufficient crawlers.

Relying on the trade, completely different website classes will probably be of various significance. Due to this fact, it’s essential to know on a site-by-site foundation which folders are crucial and which should be crawled essentially the most.

Segmenting data from log files by folder structure.Screenshot from Microsoft Excel, September 2021

Log file information over time

Amassing log file information over time is beneficial for reviewing how a search engine’s habits modifications over time.


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This may be significantly helpful in case you are migrating content material or altering a website’s construction and wish to perceive how the change has impacted search engines like google and yahoo crawling of your website.

Google's change in crawling when folder structure is changed.Screenshot from Microsoft Excel, September 2021

The above instance reveals Google’s change in crawling when a brand new folder construction is added (yellow line) and one other is eliminated and redirected (inexperienced line).

We will additionally see how lengthy it took for Google to know and replace its crawling technique.


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Desktop vs. Cellular

As talked about, log file information additionally reveals the consumer agent that was used to entry the web page and may subsequently inform you whether or not they had been accessed by a cellular or desktop bot.

This will, in flip, enable you to to know what number of pages of your website are crawled by cellular vs. desktop and the way this has modified over time.

You might also discover {that a} sure part of your website is primarily being crawled by a desktop consumer agent and can subsequently wish to do additional evaluation as to why Google are preferring this over mobile-first crawling.

Optimizations to Make From Log File Evaluation

After you have carried out some log file evaluation and found beneficial insights, there could also be some modifications you’ll want to make to your website.

For instance, when you uncover that Google is crawling numerous damaged or redirecting pages in your website this could spotlight a difficulty with these pages being too accessible for search engine crawlers.


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You’ll subsequently wish to make sure that you don’t have any inside hyperlinks to those damaged pages, in addition to clear up any redirecting inside hyperlinks.

You might also be analyzing log file information with the intention to perceive how modifications which were made have impacted crawling, or to gather information forward of upcoming modifications you or one other group could also be making.

For instance, in case you are trying to make a change to a web site’s structure, it would be best to make sure that Google remains to be in a position to uncover and crawl crucial pages in your website.

Different examples of modifications it’s possible you’ll look to make following log file evaluation embody:

  • Eradicating non-200 standing code pages from sitemaps.
  • Fixing any redirect chains.
  • Disallowing non-indexable pages from being crawled if there may be nothing contained on them that’s helpful for search engines like google and yahoo to search out.
  • Guarantee there aren’t any essential pages that by accident comprise a noindex tag.
  • Add canonical tags to spotlight the significance of specific pages.
  • Evaluate pages that aren’t crawled as regularly as they need to be and guarantee they’re simpler to search out by growing the variety of inside hyperlinks to them.
  • Replace inside hyperlinks to the canonicalized model of the web page.
  • Guarantee inside hyperlinks are all the time pointing to 200 standing code, indexable pages.
  • Transfer essential pages larger up within the website structure with extra inside hyperlinks from extra accessible pages.
  • Assess the place crawl price range is being spent and make suggestions for potential website construction modifications if wanted.
  • Evaluate crawl frequency to website classes and guarantee they’re being crawled frequently.

Remaining Ideas

Performing common log file evaluation is beneficial for website positioning professionals to higher perceive how their web site is crawled by search engines like google and yahoo resembling Google, in addition to discovering beneficial insights to assist with making selections primarily based on the information.


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I hope this has helped you to know a bit extra about log recordsdata and find out how to start your log file evaluation journey with some examples of issues to assessment.

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Featured picture: Alina Kvaratskhelia/Shutterstock

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