In short: If you need to crawl more than 50k URLs in a single crawl, a 64-bit OS with lots of memory.
Memory: The SEO Spider stores all crawl data in memory. The more memory you have allocated, the more URLs you will be able to crawl. To be able to allocate more than 1GB of memory you need a 64-bit operating system and 64-bit Java. Most PCs purchased in the last couple of years will be running a 64-bit OS. So the most important thing is to make sure you have plenty of memory available. Each website is unique in terms of how much memory it requires, so we cannot give exact figures on how much memory is required to crawl a certain number of URLs. As a very rough guide, a 64-bit machine with 8GB of RAM will generally allow you to crawl about 200,000 URLs.
CPU: The speed of a crawl will normally be limited by the website itself, rather than the SEO Spider, as most sites limit the number of concurrent connections they will accept from a single IP. When crawling hundreds of thousand URLs some operations will be limited by CPU, such as sorting and searching, so a fast CPU will help minimise these slowdowns.
Hard Disk: Size and performance is only relevant when saving and restoring crawl files, so an SSD will speed this up.
The spider is opening off screen, possibly due to a multi monitor setup that has recently changed. To move the spider on to the active monitor use Alt + Tab to select the spider, then hold in the Windows key and use the arrow keys to move the Spider window into view.Back to top
The SEO Spider runs from the machine it is installed on, so the IP address is simply that of this machine/network. You can find out what this is by typing “IP Address” into Google.
The local port used for the connection will be from the ephemeral range. The port being connected to will generally be port 80, the default http port or port 443, the default https port. Other ports will be connected to if the site being crawled or any of its links specify a different port. For example: http://www.example.com:8080/home.html
Licences are individual per user. A single licence key is for a single authorised user. If you have five users using five copies of the Screaming Frog SEO Spider software, you will require 5 separate licences.
Please see section 3 of our terms and conditions for full details.
If the SEO Spider says your ‘licence key is invalid’, then please check the following, as the licence keys we provide always work.
If you have lost your a licence key or invoice from the 22nd of September 2014 onwards, please login to your account to retrieve the details.
If you have lost your account password, then simply request a new password via the form.
If you purchased a licence before the 22nd of September 2014, then please contact firstname.lastname@example.org with your username or e-mail you used to pay for the premium version.
Simply click on the ‘buy a licence’ option in the SEO Spider ‘licence’ menu or visit our purchase a licence page directly.
You can then create an account & make payment. When this is complete, you will be provided with your licence key to open up tool & remove the crawl limit. If you have just purchased a licence and have not received your licence, please check your spam / junk folder. You can also view your licence(s) details and invoice(s) by logging into your account.
Please note, the account login has only been active from the 22nd of September 2014. If you purchased before this date, it won’t be available and you can contact us for any information.
No, the Screaming Frog SEO Spider is a separate product to the Log File Analyser. They have different licences, which will need to be purchased individually. You can purchase a Log File Analyser licence here.Back to top
Yes, please see our SEO Spider licence page for more details on discounts.Back to top
Not directly, but by selecting the “PayPal” option on our Billing page: Then choosing “Check Out as Guest” when you get to PayPal you should be able to use your Amex card. This option is available in most countries. If you don’t get this option, please use another card, PayPal or contact us via support and you can set-up to pay via bank transfer.Back to top
Yes, if you are not in the UK. To do this you must have a valid VAT number and enter this on the Billing page during checkout. Select business and enter your VAT number as shown below: Your VAT number will be checked against the VIES system and VAT removed if it is valid. The VIES system does go down from time to time, so if this happens please try again later. Unfortunately we cannot refund VAT once a purchase has been made.Back to top
Resellers can purchase an SEO Spider licence online on behalf of a client. Please be aware that licence usernames are automatically generated from the account name entered during checkout. If you require a custom username, then please request a PayPal invoice in advance.
For resellers who are unable to purchase online with PayPal or a credit card and encumber us with admin such as vendor forms, we reserve the right to charge an administration fee of £50.
There is no part number or SKU.Back to top
Screaming Frog is a UK based company, so this is not applicable.Back to top
This is nearly always due to an out of date version of Java. If you are running the PC version, please make sure you have the latest version of Java and you choose to install the 64 bit version, if you're on a 64bit machine (which is very likely today).
If you are running the Mac version, please make sure you have the most up to date version of the OS which will update Java or download Java manually.
Please uninstall, then reinstall the SEO Spider and try again.
This will generally be due to the SEO Spider reaching its memory limit. Please read how to increase memory.Back to top
If you have just increased your memory allocation or updated Java and now receive a ‘Could not create the Java virtual machine’ error message like this – It will be due to one of the two following reasons –
Connection refused is displayed in the Status column when the SEO Spiders connection attempt has been refused at some point between the local machine and website. If this happens for all sites consistently then it is an issue with the local machine/network. Please check the following:
Connection timeout occurs when the SEO Spider struggles to receive an HTTP response at all and the request times out. It can often be due to a slow responding website or server when under load, or it can be due to network issues. We recommend the following –
The SEO Spider determines the character encoding of a web page by the “charset=” parameter in the http Content-Type header, eg:
You can see this in the SEO Spider’s interface in the ‘Content’ columns (in various tabs). If this is not present in the http header, the SEO Spider will then read the first 2048 bytes of the html page to see if there is a charset within the html.
For example –
“meta http-equiv=”Content-Type” content=”text/html; charset=windows-1255″
If this is not the case, we continue assuming the page is UTF-8.
The Spider does log any character encoding issues. If there is a specific page that is causing problems, perform a crawl of only that page by setting the maximum number of URLs to crawl to be 1, then crawling the URL. You may see a line in the trace.txt log file (the location is – C:UsersYourprofile.ScreamingFrogSEOSpidertrace.txt):
20-06-12 20:32:50 INFO seo.spider.net.InputStreamWrapper:logUnsupportedCharset Unsupported Encoding ‘windows-‘ reverting to ‘UTF-8’ on page ‘http://www.example.com’ java.io.UnsupportedEncodingException: windows-‘. This could be an error on the site or you may need to install an additional language pack.
The solution to fix this is to specify the format of the data by either the Content-Type field of the accompanying HTTP header or ensuring the charset parameter in the source code is within the first 2048 bytes of the html within the head element.
There are generally two reasons for this:
If you’re using Ubuntu and are unable to view the graphs, this is because the SEO Spider makes use of the JavaFX library for its graphing function. This requires java 7 from Oracle to be installed. This is an optional step, but required if you would like the Spider to display graphs/charts etc. Click here to view our Java 7 Installation GuideBack to top
The SEO Spider will check links to PDF documents. These URLs can be seen under the PDF filter in the Internal and External tabs. It does not parse PDF documents to find links to crawl.Back to top
First ensure the Spider is still crawling the site and if so what the URLs it has been finding look like. Depending on the URLs the Spider has been finding will explain why the crawl percentage is not increasing:
Because Windows Defender is running a security scan on it, this can take up to a couple of minutes. Unfortunately when downloading the file using Google Chrome it gives no indication that it is running the scan. Internet Explorer does give an indication of this, and Firefox does not scan at all. If you go directly to your downloads folder and run the installer from there you don’t have to wait for the security scan to run.Back to top
Because the SEO Spider is not obeying your windows scaling settings. You must choose the Windows Look and Feel by going to Configuration -> User Interface, selecting “Enable Windows Look and Feel” and restarting the SEO Spider.Back to top
This is a known java 8 bug relating to fonts. You can see details of this bug here.
The issue is around the use of non-standard fonts. If you restore standard fonts the SEO Spider will be able to start. To do this, open the “Font Book” application and choose File->Restore Standard Fonts. The SEO Spider should now be able to start without issue.
The removed fonts will now appear in the folder
/Library/Fonts (Removed). You can then add them back in one by one, so you can work out and avoid the one(s) that are causing the issue.
From version 2.50 the SEO Spider requires Java 7 or above to run. This is only available on OS X 10.7.3 and above, which means older 32-bit Macs (the last of which we understand were made 8-9 years ago) will not be able to use the latest version of the SEO Spider. Newer 64-bit Macs which haven’t yet updated their version of OS X will need to update their OS before installing Java.
We do still support version 2.40 for OS X versions below 10.7.3 (and 32-bit) Macs which can be downloaded here. The only difference is the graphs, which require Java 7 for the feature. Features added in later versions such as Graphs, Google Analytics and Search Analytics Integration are not supported either.
Unfortunately we are at the mercy of Oracle to update their Mac look and feel to more closely match the new style introduced in Mac OS X Yosemite. There is a Java bug related to this at JDK-8052173. This will be updated in a future Java release.Back to top
Feedback is welcome, please just follow the steps on the support page to submit feedback. Please note we will try to read all messages but might not be able to reply to all of them. We will update this FAQ as we receive additional questions and feedback.Back to top
You cannot use the configuration options in the lite version of the tool. You will need to buy a licence to open up this menu, you can do this by clicking the ‘buy a licence’ option in the Spider’s interface under ‘license’.Back to top
You can bulk export data via the ‘bulk export’ option in the top level navigation menu. Simply choose the ‘images missing alt text’ option to export all references of images without alt text. Please see more on exporting in our user guide.Back to top
You can simply view URLs blocked via robots.txt in the UI (within the ‘Internal’ and ‘Response Codes’ tabs for example). Ensure you have the ‘Show internal URLs blocked by robots.txt’ configuration ticked under the ‘Configuration > Spider > ‘Basic’ tab.
Disallowed URLs will appear with a ‘status’ as ‘Blocked by Robots.txt’ and there’s a ‘Blocked by Robots.txt’ filter under the ‘Response Codes’ tab, where these can be viewed.
The ‘Blocked by Robots.txt’ filter also displays a ‘Matched Robots.txt Line’ column, which provides the line number and disallow path of the robots.txt entry that’s excluding each URL. If multiple lines in robots.txt block a URL, the SEO Spider will just report on the first encountered, similar to Google within Search Console.
Please see our guide on using the SEO Spider as a robots.txt tester.
If you’re using the older 2.40 Mac version of the SEO Spider, you can view the ‘Total Blocked by robots.txt’ for a crawl on the right-hand side of the user interface in the ‘Summary’ section of the overview tab. This count includes both internal and external URLs. Currently, there isn’t a way of seeing which URLs have been blocked in the user interface. However, it is possible to get this information from the SEO Spider log file, after a crawl. Each time a URL is blocked by robots.txt, it will be reported like this:
2015-02-18 08:56:09,652 [RobotsMain 1] INFO - robots.txt file prevented the spider of 'http://www.example.com/page.html', reason 'Blocked by line 2: Disallow: http://www.example.com/'. You can choose to ignore robots.txt files in the Spider configuration.
You can view the log file(s) by either going to the location shown for ‘Log File’ under Help->Debug, or downloading and unzipping the log files from Help->Debug->Save Logs.
The SEO Spider supports two forms of authentication, standards based which includes basic and digest authentication, and web forms based authentication.
The spider obeys robots.txt protocol. Its user agent is ‘Screaming Frog SEO Spider’ so you can include the following in your robots.txt if you wish the Spider not to crawl your site – User-agent: Screaming Frog SEO Spider Disallow: / Please note – There is an option to ‘ignore’ robots.txt and change user-agent, which is down to the responsibility of the user entirely.Back to top
There’s a number of reasons why the number of URLs found in a crawl might not match the number of results indexed in Google (via a site: query) or errors reported in the SEO Spider match those in Google Search Console.
First of all, crawling and indexing are quite separate, so there will always be some disparity. URLs might be crawled, but it doesn’t always mean they will actually be indexed in Google. This is an important area to consider, as there might be content in Google’s index which you didn’t know existed, or no longer want indexed for example. Equally, you may find more URLs in a crawl than in Google’s index due to directives used (noindex, canonicalisation) or even duplicate content, low site reputation etc.
Secondly, the SEO Spider only crawls internal links of a website at that moment of time of the crawl. Google (more specifically Googlebot) crawls the entire web, so not just the internal links of a website for discovery, but also external links pointing to a website.
Googlebot’s crawl is also not a snapshot in time, it’s over the duration of a site’s lifetime from when it’s first discovered. Therefore, you may find old URLs (perhaps from discontinued products or an old section on the site which still serve a 200 ‘OK’ response) that isn't linked to anymore, or content that is only linked to via external sources in their index still. The SEO Spider won’t be able to discover URLs which are not linked to internally, like orphan pages or URLs only accessible by external links.
There are other reasons as well, these may include –
Yes. There are two ways you can do this:
1) Open up a multiple instances of the SEO Spider, one for each domain you want to crawl. Mac users check here.
2) Use list mode (Mode->List). Remove the search depth limit (Configuration->Spider->Limits and untick “Limit Search Depth”, untick “Ignore robots.txt” (Configuration->Spider->Basic) then upload your list of domains to crawl.
Canonicalised, robots.txt blocked, noindex and paginated URIs are not included in the sitemap by default. You may choose to include these in your site map by ticking the appropriate checkbox(s) in the 'Pages' tab when you export the site map.
Please read our user guide on XML Sitemap Creation.
If you are using a regex like
.* that contains a greedy quantifier you may end up matching more than you want. The solution to this is to use a regex like
For example if you are trying to extract the id from the following JSON:
"id":"(.*)" you will get:
007", "name":"James Bond
If you use
"id":"(.*?)" you will extract:
The URLs in your chosen Google Analytics view have to match the URLs discovered in the SEO Spider crawl exactly, for data to be matched and populated accurately. If they don’t match, then GA data won’t be able to be matched and won’t populate. This is the single most common reason.
If Google Analytics data does not get pulled into the SEO Spider as you expected, then analyse the URLs under ‘Behaviour > Site Content > Landing Pages’ and ‘Behaviour > Site Content > All Pages’ depending on which dimension you choose in your query. Try clicking on the URLs to open them in a browser to see if they load correctly.
You can also export the ‘GA & GSC Not Matched’ report which shows a list of URLs returned from the Google Analytics & Search Analytics (from Search Console) API’s for your query, that didn’t match URLs in the crawl. Check the URLs with source as ‘GA’ for Google Analytics specifically (those marked as ‘GSC’ are Google Search Analytics, from Google Search Console). The URLs here need to match those in the crawl, for the data to be matched accurately.
If they don’t match, then the SEO Spider won’t be able to match up the data accurately. We recommend checking your default Google Analytics view settings (such as ‘default page’) and filters such as ‘extended URL’ hacks, which all impact how URLs are displayed and hence matched against a crawl. If you want URLs to match up, you can often make the required amends within Google Analytics or use a ‘raw’ unedited view (you should always have one of these ideally).
Please note – There are some very common scenarios where URLs in Google Analytics might not match URLs in a crawl, so we cover these by matching trailing and non-trailing slash URLs and case sensitivity (upper and lowercase characters in URLs). Google doesn’t pass the protocol (HTTP or HTTPS) via their API, so we also match this data automatically as well.
There’s a number of reasons why data fetched via the Google API into the SEO Spider, might be different to the data reported within the Google Analytics Interface. First of all, we recommend triple checking that you’re viewing the exact same account, property, view, segment, date range and metrics and dimensions. LandingPagePath and PagePath will of course provide very different results for example! If data still doesn’t match, then there are some common reasons why –
We don't have a Chromebook version of the SEO Spider. However, you can install Crouton, set up Ubuntu and download and install the Ubuntu version of the SEO Spider.
Please note, Chromebook's are not very powerful and are generally limited to 4GB of RAM. This will mean memory is restricted, and the number of URLs that can be crawled will also be limited. You can read more about SEO Spider memory in our user guide.
The SEO Spider finds pages by scanning the HTML code of the entered starting URL for
<a href> links, which it will then crawl to find more links. Therefore to find a page there must be a clear linking path to it from the starting point of a crawl for the SEO Spider to follow.
If there is a clear path, then these links or the pages the links are on must exist in a way the SEO Spider either cannot 'see' or crawl. Hence please make sure of the following:
When the licence expires, the SEO Spider returns to the restricted free lite version. The Spider’s configuration options are unavailable, there is a 500 URI maximum crawl limit and previously saved crawls cannot be opened.
To remove the crawl limit, use all the features and configuration options and open up saved crawls, simply purchase a licence upon expiry.
In the same way as the free ‘lite’ version, there are no restrictions on the number of websites you can crawl with a licence. Licences are however, individual per user. If you have five members of the team who would like to use the licenced version, you will need five licences.
The SEO Spider stores the licence in a file called licence.txt in the users home directory in a ‘.ScreamingFrogSEOSpider’ folder. You can see this location by going to Help->Debug and looking at the line labeled “Licence File”. Please check the following to resolve this issue:
user.homevalue supplied to Java is incorrect. Ideally your IT team should fix this. As a work around you can add:
-Duser.home=DRIVE_LETTER:\path\to\new\directory\to the ScreamingFrogSEOSpider.l4j.ini file that controls memory settings.
Yes, please take a note of your licence key (you can find this under ‘Licence’ and ‘Enter Licence...’ in the software), then uninstall the SEO Spider on the old computer, before installing and entering your licence on the new machine. If you experience any issues during this move, please contact our support.Back to top
As standard you download the lite version of the tool which is free. However, without a licence the SEO Spider is limited to crawling a maximum of 500 URIs each crawl. The configuration options of the Spider and the custom source code search feature are also only available in the licensed version.
For £149 per annum you can purchase a licence which opens up the Spider’s configuration options and removes restrictions on the 500 URI maximum crawl. A licence is required per individual using the tool. When the licence expires, the SEO Spider returns to the restricted free lite version.
We accept PayPal and most major credit and debit cards. Payment via American Express is covered here. The price of the SEO Spider is in pound sterling (GBP). If you are outside of the UK, please take a look at the current exchange rate to work out the cost. (The automatic currency conversion will be dependent on the current foreign exchange rate and perhaps your card issuer). We do not accept cheques (or checks!)Back to top
If you have just purchased a licence and have not received your licence, please check your spam / junk folder. Licences are sent immediately upon purchase. You can also view your licence(s) details and invoice(s) by logging into your account. Please also check your payment method. If you have paid via an e-cheque, then the licence will only be sent when it has cleared. Paypal explains this as well.Back to top
There are a few reasons this could happen:
The software needs to be downloaded from our website, the licence key is delivered electronically by email.Back to top
We do not offer discounted rates for resellers. The price is GBP at £149 per year, per user.Back to top
No, we only sell in GBP.Back to top
This could be for a number of reasons:
X-Robots-Tagin the HTTP header. These can be seen in the “Directives” tab in the “Nofollow” filter. To ignore the NoFollow directive go to Configuration -> Spider -> and tick "Follow Internal 'No Follow'" and recrawl.
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
This will generally be due to the SEO Spider reaching its memory limit. Please read how to increase memory.Back to top
You may get connection refused on sites that use stronger crypto algorithms than are supported by default in Java. Before going any further, check you have the latest version of Java installed as this fixes a lot of issues connecting to secure sites. If the problem persists, read on.
You will see a “Connection Refused” in the Status column on the SEO Spider interface. The log file will show a line like this:
2015-01-19 09:10:03,218 [SpiderWorker 1] WARN - IO Exception for url: 'https://www.example.com/' reason: 'javax.net.ssl.SSLHandshakeException: Received fatal alert: handshake_failure'
You can view the log file(s) by either going to the location shown for ‘Log File’ under Help->Debug, or downloading and unzipping the log files from Help->Debug->Save Logs.
Due to import restrictions Java cannot supply this stronger crypto support by default. You can however, install the Java higher strength crypto support by downloading the following:
For Java 8: Java 8 Security Fix For Java 7: Java 7 Security Fix
If you download, unzip and follow the instructions in the README.txt file you should be able to crawl your site successfully. Note that you can find where your <java-home> directory is set to by running up the SEO Spider and going to Help->Debug and looking at the Java section.
On OS X: Open a new Finder window, choose Go->Go To Folder... then enter: /Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/lib/security/. This is the location to copy the local_policy.jar and US_export_policy.jar into from the downloaded jce_policy-8.zip file.
For more background information see here and scroll down to the section “Adding stronger algorithms: JCE Unlimited Strength”.
Connection error, or connection timeout is a message when there is an issue in receiving a response at all. This is generally due to network issues or proxy settings. Please check that you can connect to the internet. If you have changed the SEO Spider proxy settings (under configuration, proxy), please ensure that these are correct (or they are switched off).Back to top
The 403 forbidden status codes occurs when a web server denies access to the SEO Spider’s request for some reason.
If this happens consistently and you can see the website in a browser, it could be the web server behaves differently depending on User Agent. In the premium version try adjusting the User Agent setting under Configuration->HTTP Header->User Agent. For example, try crawling as a bot, such as ‘Googlebot Regular’, or as a browser, such as ‘Chrome’.
If this happens intermittently during a crawl, it could be due to the speed the Spider is requesting pages overwhelming the server. In the premium version of the SEO Spider you can reduce the speed of requests. If you are running the ‘lite’ version you may find that right clicking the URL and choosing re-spider will help.
When a website requires cookies this often appears in the Spider as if the starting URL is redirecting to itself or to another URL and then back to itself (any necessary cookies are likely being dropped along the way). This can also be seen when viewing in a browser with cookies disabled:
For the spider to be able to crawl websites like this the ‘Allow Cookies’ option must first be set:
Configuration > Spider > Advanced > Allow Cookies
To bypass the redirect behaviour, as the Spider only crawls each URL once, a parameter must be added the to the starting URL:
A URL rewriting rule that removes this parameter when the spider is redirected back to the starting URL must then be added:
Configuration > URL Rewriting > Remove Parameters
The Spider should then be able crawl normally from the starting page now it has any required Cookies.
If the site or URL in question has page titles and meta descriptions, but one (or both!) are not showing in the SEO Spider this is generally due to invalid HTML markup between the opening html element and the close head element. The HTML markup between these elements in the source code has to valid, without errors, for page titles and meta descriptions to be parsed and collected by the SEO Spider.
The SEO Spider reads up to a maximum of 20 meta tags. So if there are over 20 meta tags and the meta description is after the 20th meta tag, it will be ignored.
We recommend validating the html using the free W3C markup validation tool. A really nice feature here is the ‘Show Source’ button, which can be very insightful to identify specific errors.
We recommend fixing any html markup errors and then crawling the URL(s) again for these elements to be collected.
These will appear under the 'Images' tab from version 7.0 and above. If you're using an older version of the software, please update, or view them under the 'External' tab.
A content delivery network (or CDN) will either operate from an external domain or a sub domain and hence if one is being used to serve images they will appear under the ‘Images’ tab as usual. Please ensure robots.txt is not blocking the SEO Spider from crawling the CDN. To view alt text of the images, you can still use the ‘image info’ tab in the lower window pane still.
To export all image alt text, simply use the ‘bulk export’ and ‘all images’ export. When you have the data in a spread sheet, simply filter for the destination URL to ‘does not contain’ ‘yourwebsite.com’. This will then display all images and their alt text on the CDN.
This warning is about running Java in your web browser, not Java Script. If you download Java 8 and need to run Java content (Java Applets for example) you will have to visit those web sites using either Safari or Firefox. Google are working on a 64-bit version of Chrome for MAC OSX that will alleviate this issue.
In our testing internally over a 6-month period using the Chrome browser every day alongside Java 8, we haven’t experienced any websites where there was an issue, ever. So, we recommend upgrading and you’ll probably never notice a problem. You can always revert if there was an issue.
Alternatively, we do still support version 2.40 which uses Java 6 and can be downloaded here. This doesn't have as many features and will become unsupported at sometime, however.
This means the crawl did not save completely, which is why it can’t be opened. EOF stands for ‘end of file’, which means the SEO Spider was unable to read to the expect end of the file. This can be due to the SEO Spider crashing during save, which is normally due to running out of memory. This can also happen if you exit the SEO Spider during save, or your machine crashes for example. Unfortunately there is no way to open or retrieve the crawl data, as it’s incomplete and therefore lost. Please also consider increasing your memory allocation, which will help reduce any problems saving a crawl in the future.Back to top
Please note Include/Exclude are case sensitive so any functions need to match the URL exactly as it appears.
Functions will only be applied to URLs that have not yet been discovered by the Spider. Any URLs that have been discovered and queued for crawling will to be affected, hence it is recommended the crawl is restarted between updates to ensure the results are accurate.
Functions will not be applied to the starting URL of a crawl or URLs in list mode.
.* is a the regex wildcard
Try running the file as administrator by right clicking the installer and choosing “Run as administrator”. Alternatively log in to an administrator account. You may need to request assistance from your IT department depending on your company setup.Back to top
Yes, by issuing the following command:
By default this will install the SEO Spider to:
C:\Program Files (x86)\Screaming Frog SEO Spider
You can choose an alternative location by using the following command:
ScreamingFrogSEOSpider-7.1.exe /S /D=C:\My Folder
If you get a message every time you start up that looks like this: Then you are most likely running OS X Yosemite (10.10.x) which has a bug in it's Java Runtime. Installing this patch from Apple will resolve the issue.Back to top
To open additional instances of the SEO Spider open a Terminal and type the following:
open -n /Applications/Screaming\ Frog\ SEO\ Spider.app/
Please follow the steps on the support page so we can help you as quickly as possible. Please note, we only offer full support for premium users of the tool although we will generally try and fix any issues.Back to top
The SEO Spider runs on Windows, Mac and Linux. It’s a Java application and requires a Java 8 runtime environment or later to be to run. You can check here to see the system requirements to run Java. You can download the SEO Spider for free and try it.
Mac: If you are using OS X 10.7.2 or lower please see this faq.
Linux: We provide an Ubuntu package for Linux. If you would like to run the SEO Spider on a non-Debian based distribution please extract the jar file from the .deb and run it manually.
Windows: The SEO Spider can also be run on the server variants and Windows 10.
Please note that the rendering feature is not available on older operating systems.
You can bulk export data via the ‘bulk export’ option in the top level navigation menu. Simply choose the ‘all images’ option to export all images and associated alt text found in our crawl. Please see more on exporting in our user guide.Back to top
The Screaming Frog SEO Spider is robots.txt compliant. It checks robots.txt in the same way as Google. So it will check robots.txt of the (sub) domain and follow directives for all robots and specifically any for Googlebot. The tool also supports URL matching of file values (wildcards * / $) like Googlebot. Please see the above document for more information or our robots.txt section in the user guide. You can turn this feature off in the premium version.Back to top
The SEO Spider cannot crawl an unlimited number of URLs, it is restricted by memory allocated. There is not a set number or pages it can crawl, it is dependent on the complexity of the site and a number of other factors. Generally speaking with the standard memory allocation of 512MB, the SEO Spider can crawl between 5K-50K URLs of a site. However, you can increase the SEO Spider’s memory allocation and crawl into hundreds of thousands of URLs. As a very rough guide, a 64bit machine with 8GB of RAM will generally allow you to crawl a couple of hundred thousand URLs.
We recommend crawling large sites in sections. You can use the configuration menu to just crawl HTML (rather than images, CSS or JS), avoid crawling external links, exclude certain sections of the site or only 'include' others. Alternatively, if you have a nicely structured IA you can crawl by directory (/holidays/, /blog/ etc). Please see our 'crawling larger websites' section in the user guide. The tool was not built to crawl entire sites with many hundreds of thousands or millions of pages, as it currently uses RAM rather than a hard disk database for speed and flexibility.
The ‘Completed’ URI total is the number of URIs the SEO Spider has encountered. This is the total URI crawled, plus any ‘Internal’ and ‘External’ URI blocked by robots.txt.
Depending on the settings in the robots.txt section of the ‘Configuration > Spider >Basic’ menu, these blocked URI may not be visible in the SEO Spider interface.
If the ‘Respect Canonical’ or ‘Respect Noindex’ options in the ‘Configuration > Spider > Advanced’ tab are checked, then these URI will count towards the ‘Total Encountered’ (Completed Total) and ‘Crawled’, but will not be visible within the SEO Spider interface.
The ‘Response Codes’ Tab and Export will show all URLs encountered by the Spider except those hidden by the settings detailed above.
No. The Screaming Frog SEO Spider does not communicate any data back to us. All data is stored locally on your machine in its memory. The software does not contain any spyware, malware or adware (as verified by Softpedia) and it does not ‘phone home’ in anyway. You crawl from your machine and we don’t see it! Google APIs use the OAuth 2.0 protocol for authentication and authorisation, and obviously the data provided via Google Analytics is only accessible locally on your machine. We don’t (and technically can’t!) see or store any data ourselves.Back to top
First of all, the free ‘lite’ version is restricted to a 500 URLs crawl limit and obviously a website might be significantly larger. If you have a licence, the main reason an SEO Spider crawl might discover more or less links (and indeed broken links etc), than another crawler is simply down to the different default configuration set-ups of each.
As default the SEO Spider will respect robots.txt, respect ‘nofollow’ of internal and external URLs & crawl canonicals. But other crawlers sometimes don’t respect these as default and hence why there might be differences. Obviously these can all be adjusted to your own preferences within the configuration.
While crawling more URLs might seem to be a good thing, actually it might be completely unnecessary and a waste of time and effort. So please choose wisely what you want to crawl.
We believe the SEO Spider is the most advanced crawler available and it will often find more URLs than other crawls as it crawl canonicals and AJAX similar to Googlebot which other crawlers might not have as standard, or within their current capability. There are other reasons as well, these may include –
Read our ‘How To Create An XML Sitemap‘ tutorial, which explains how to generate an XML Sitemap, include or exclude pages or images and runs through all the configuration settings available.Back to top
If you want all the H1s from the following HTML:
Then we can use:
There are a number of reasons why you might be experiencing slow crawl rate or slow down of the SEO Spider. These include –
No, we do not have an affiliate program for the SEO Spider software at this time.Back to top