Where Does Semrush Get Its Data From?

When you enter a query in Semrush, let’s say a keyword or a domain, it comes with various insights. Semrush relies on its massive data reservoir containing millions of URLs, billions of keywords, and trillions of links to provide you with these details.

But from where does Semrush’s data come?

Here’s a detailed post to help you understand how Semrush acquires its data and its various sources and methods to collect it.

Bonus: You can read our in-depth Semrush review to learn about what it offers. 

Why does it matter to know the source of Semrush data?

Digital marketing has a highly data-driven approach. Without the correct data, it is just grappling in the dark. That’s why it becomes essential to understand where the SEO tool is pulling data from.

Here are some of the reasons why it matters to know the source of Semrush data:

  • To assess the reliability and validity of the data

Different data sources have different accuracy levels, and knowing about them helps users make a more informed decision based on data quality.

  • To evaluate the data coverage

Data coverage signifies the extent and scope of data provided by Semrush. Knowing about it helps users understand the websites, geographic locations, industries, etc., where the data comes from, and whether it’s relevant to their particular needs.

  • For comparative analysis with other tools

When you are aware of the sources from which Semrush fetches data, it becomes easy to compare it with other tools. It significantly helps to understand the added value that Semrush provides to its users and the level of accuracy it brings to the table. Consequently, you are equipped with better insights to devise powerful SEO strategies.

  • To understand the data limitations of Semrush

Knowing the Semrush data source has another advantage – it helps you recognize the limitations of the data. Different sources of data collection methods might introduce discrepancies or have inherent limitations. Understanding them helps users better interpret data and use it to their advantage.

Sources of Data for Semrush

Let us check Semrush’s sources in detail below:

Organic Search Data

For organic search data, Semrush relies on third-party data providers. Incidentally, Semrush maintains a keyword database of over 25 billion keywords.

And to collect such massive keywords, its data providers scour around 808 million domains in Google search results.

Likewise, Semrush also acquires domain and Keyword ranking data from the top 100 domains in Google SERPs. Also, Semrush thoroughly analyzes the organic and paid search results to give a complete overview of any website listed in the SERPs.

Paid Search Data

I always talk about why Semrush surpasses other similar tools by a margin. It also includes a robust PPC and online advertising module, which is often missing in SEO tools. And to power its paid search module, Semrush banks upon its database of over 1 billion Google ads and historical data from 2012. Semrush thoroughly analyzes PPC and Google shopping ads to collect this data and then secures relevant details in its database.

Backlinks Data

No SEO tool understands the criticality of backlinks for higher search ranking than Semrush. That’s why it maintains the largest repository of backlinks in the SEO tool segment.

Semrush has its very own crawlers to collect backlinks details. In fact, Semrush has the fastest backlinks crawlers in the digital space. They scan over 25 billion domains each day to acquire any new backlinks they might find. These crawlers analyze websites, identify links pointing to a particular URL and evaluate their quality and relevance before submitting them to the database.

Semrush Backlinks Data

Traffic Analytics Data

Semrush provides one of the most accurate traffic estimates in the entire SEO tool segment. In fact, its traffic analytics details are 35% closer to actual GSC figures than other tools. 

Semrush has partnered with hundreds of clickstream data providers to acquire traffic estimates data. These data providers record over 2 million events across the internet each minute. This humongous clickstream data is then fed to Semrush’s indigenous Neural Network algorithm that analyzes data with statistical sampling and provides an accurate estimate of web traffic.

Semrush traffic analytics data

Social Media Data

Semrush collects social media data via the public APIs of these social media platforms. You can quickly get an overview of the performance of your social media profiles with Semrush. It can fetch details like followers, retweets, engagement, hashtags, video views, etc.

It then segments and organizes the data and presents it in an easily digestible format. This way, you can easily gauge the growth and engagement gaye of your social media presence.

If you are wondering if Semrush is accurate with its data, we tested the tool and came up with the verdict about how accurate is Semrush. Check it out here

How does Semrush Process and Analyze data?

Data collection is one thing, but analyzing and presenting it in a way that showcases the details in the easiest way possible is altogether different. Thankfully, Semrush aces it too. Here’s how Semrush process and analyze data:

Cleaning and organizing raw data

For analysis and live presentation, Semrush first cleans and organizes data. The process might include removing duplicate data and eliminating inconsistencies or errors in the raw data. By organizing data, Semrush ensures its quality and accuracy and prepares it for further analysis.

Applying algorithms and machine learning techniques

Semrush has developed in-house machine-learning algorithms to process and segment the collected insights. These sophisticated algorithms identify trends, correlations, and patterns in the data. Furthermore, Smerush employs machine learning algorithms for topic modeling, keyword clustering, and more.

Generating insights and reports

For generating meaningful insights from the raw and processed information, Semrush has put in place neural network algorithms. These networks identify and perceive data similar to the human brain. This way, Semrush is able to understand audience behavior better and organize data that is easy to understand by the user.

How updated is Semrush data?

Semrush updates its data on a daily and weekly basis. It has a live update algorithm in place that is used to refresh the data.

It updates its keyword database each day and adds around 7 million new keywords daily on average, which amounts to 210 million monthly KWs. Also, Semrush claims that its keywords database is totally revamped each month based on popularity, ranking, and other factors related to searched terms. Similarly, Semrush also updates its position tracking insights in 24 to 48 hours. 

Moreover, Semrush Backlinks crawlers continually scan the web for new backlinks and check for changes in backlinks profiles or over 1 billion URLs. Therefore, the Semrush Backlinks database is updated with new links on a daily basis.

Want to read more about Semrush? Check out our Semrush Statistics!

Limitations and Accuracy of Semrush’s Data

Despite having the most extensive database compared to any other SEO tool, Semrush still has some limitations. One is its reliance on third-party data providers, meaning you only have rough estimates of data fetched by these providers.

Secondly, Semrush only fetches data from Google search results, limiting its data coverage. It means Semrush might miss some websites or is unable to crawl many, which impacts its data representation.

Also, Semrush does not represent Real-time data. This gap is due to the time required for data collection, analysis, and visualization. Consequently, the insights provided by Semrush may represent a delayed snapshot of the SERPs.

Considering it is a non-Google tool, The depth of data it provides and the comprehensiveness it includes is unmatched. I have yet to find a tool that accurately represents SEO and SEM statistics more than Semrush.


To conclude, the various sources of data and its cutting-edge data collection and analysis process enable it to construct the most accurate snapshot of any website’s SEO and paid search status. While it has some limitations regarding its data, Semrush remains the most valuable tool for optimizing and enhancing your online presence in the market currently.


How does Semrush collect data?

Semrush utilizes third-party data providers, web crawlers, machine learning algorithms, and neural networks to collect, analyze, and organize data.

What is clickstream data?

Clickstream data is the record of every click made by users while surfing the internet. It might also include details like the visited websites, time spent on a particular website, pages viewed, search terms entered in Google or other search engines, links clicked, etc.

How is clickstream data collected?

Clickstream data is collected through web analytics tools. Moreover, ISP data, browser extensions, cookies, etc., are also used to collect clickstream data.

Does Semrush use clickstream data?

Yes, Semrush uses clickstream data to churn out its traffic estimate details.

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