Products Solutions Templates Pricing Resources

How website analytics collects data

Home / Everything About / Everything About Analytics / How website analytics collects data

Every time someone visits your website, invisible processes start working immediately. A small piece of code runs silently in the background, collecting data about what your visitor does. That data gets sent to your analytics platform to be processed, and within moments, the visit appears as a number in your dashboard.

Most website owners never think about how website analytics works. They see the report. They do not see the mechanism behind it. Understanding what happens between a visitor landing and a metric appearing in your dashboard is the difference between using analytics and understanding analytics.

Here is how data collection works in website analytics.

How website analytics works: a quick overview

The basic flow is simple. A visitor lands on your site. Tracking code on your pages springs into action. Data about that visitor and their actions gets collected. That data travels to your analytics platform. The platform processes it. And the visit appears in your dashboard.

Each step involves different technologies and mechanisms. Understanding how they work together is what separates owners who use analytics from owners who understand it.

What happens the moment a visitor arrives

The process starts with a piece of code. This code is a small JavaScript snippet that sits on every page of your website. When a visitor loads your page, their browser runs this code automatically.

That code is a tracking script. It watches what the visitor does and collects information about it.

The visitor does not see this happening. They do not choose to participate. The tracking code runs silently in the background, listening for specific actions and recording data about them.

If you use WEMASY's analytics, the tracking code is installed automatically when you set up analytics in your account. You do not paste code into your website manually. The system handles it. But the mechanics are the same as any other analytics platform.

What tracking scripts collect

Once the tracking script loads on a page, it collects several types of data about the visitor and their actions:

About the visitor and device

The visitor's location (based on their IP address)
What device they are using (phone, tablet, desktop)
What browser they are using (Chrome, Safari, Firefox)
Operating system (Windows, Mac, iOS)
Screen resolution and language settings

About their behavior on your site

Which page they landed on
How long they spent on the page
Which links they clicked
Whether they filled out a form and what they entered
Which pages they visited in order (their journey through your site)
Whether they made a purchase or completed another goal

About where they came from

If they came from a search engine, what keyword they searched for
If they came from another website, which website
If they came from an ad, which ad campaign
If they typed your URL directly into their browser

The tracking code collects all of this in real time, as the visitor is using your site. Every page load, every click, every pause is recorded.

How the code identifies repeat visitors

Here is a problem: when a visitor comes back to your site a week later, how does the analytics system know it is the same person? They might be using a different device, a different browser, or the same device but with a cleared history.

This is where cookies come in.

A cookie is a tiny file that the analytics code stores on the visitor's device. It is just a few bytes of data. When that visitor comes back to your site, the code reads the cookie and says, "I know you. You were here before."

Analytics systems use first-party cookies. These are cookies set by your website directly on your visitor's device. They contain a unique identifier, usually something like a long string of numbers and letters. This identifier means nothing to humans but tells the analytics system that this is a returning visitor.

First-party cookies stay on the visitor's device. They do not identify the person by name. They do not store personal information. They just remember that this device visited your site before.

Third-party cookies exist too. These are cookies set by other companies to track visitors across many websites. Most analytics platforms have moved away from relying on third-party cookies, especially because browsers are blocking them and privacy laws are restricting their use.

How data gets to the analytics platform

After the tracking code collects data, it needs to send that information somewhere. It cannot just sit on the visitor's device. It needs to reach your analytics platform.

There are two ways this happens: client-side tracking and server-side tracking.

Client-side tracking

In client-side tracking, the tracking code sends data directly from the visitor's browser to the analytics platform. The data travels straight from the visitor's device to your analytics servers, or to WEMASY's analytics platform, depending on which system you use.

This is the most common approach and has been the standard for years. It works well, but ad blockers and privacy-focused browsers can block this connection. If a visitor is using an ad blocker or privacy browser, the tracking code cannot send data to the analytics platform. That visit becomes invisible in your reports.

Server-side tracking

Server-side tracking works differently. The tracking code on the visitor's browser does not send data directly to the analytics platform. Instead, it sends the data to your own server first. Your server receives the data, processes it, and then forwards it to the analytics platform.

This approach is more accurate because your server cannot be blocked by ad blockers or privacy browsers in the same way a direct browser connection can. The data is handled on your own infrastructure first, then sent to the analytics system. This is why some companies are moving to server-side tracking — the data quality is higher.

However, server-side tracking requires more technical setup. For small business owners using a website builder like WEMASY, client-side tracking is simpler and works fine for most purposes.

What happens to the data once it arrives

When the analytics platform receives all this raw data, it does not just dump it into your dashboard immediately. It processes it first.

Processing includes:

Filtering out bot traffic. Lots of automated crawlers visit websites. The analytics system filters these out so your real visitor numbers are accurate.
Removing duplicate data. Sometimes the same action gets recorded twice. Processing removes these duplicates.
Organizing data by session. The system groups individual actions into sessions so you can see a visitor's full journey, not just individual clicks.
Applying timestamps. Every action gets tagged with the exact time it happened so you can see patterns (peak traffic times, for example).
Categorizing traffic sources. The system looks at where the visitor came from and puts them into categories (organic search, direct traffic, referral, ad, email, etc).

Once the data is processed, it is ready to be displayed in your analytics dashboard as metrics and reports.

How WEMASY's analytics collects data

WEMASY's analytics works the same way as any analytics system. When you enable analytics in WEMASY, the tracking code is automatically added to your website. You do not have to configure or install anything.

The code collects the same types of data: where visitors come from, what pages they view, how long they stay, whether they convert. It uses first-party cookies to identify returning visitors. It processes the raw data and puts it into your WEMASY dashboard so you can see what is happening on your site.

WEMASY's analytics system includes an important feature for privacy: it respects user privacy settings. If a visitor has enabled the "Do Not Track" setting in their browser, WEMASY respects that and does not track them (though the visit is still recorded in your aggregate traffic numbers). This is part of responsible data collection.

You can track up to 10,000 visits per month with WEMASY analytics in the standard plan. For small businesses just starting to analyze their traffic, this covers most use cases.

Understanding cookies and privacy

Cookies have gotten a complicated reputation because third-party tracking cookies became associated with invasive advertising. But the cookies that analytics systems use are different.

Analytics cookies are first-party cookies set by your own website. They do not follow your visitor around the internet. They do not share information with third-party advertisers (unless you set up ad integration separately). They simply help you remember that a visitor came back.

In many countries, using analytics cookies requires transparency. Websites should disclose that they use analytics and give visitors the option to opt out. This is why most websites have a cookie banner — to comply with laws like GDPR in Europe and CCPA in California.

WEMASY helps you implement compliant analytics by letting you control what is tracked and allowing visitors to opt out if they choose.

What data does not get collected

There are important limits to what analytics systems collect. By design, analytics cannot see:

The visitor's name or email address (unless they fill out a form and you capture it separately)
Passwords or payment card information (ethical analytics systems are designed to ignore this data)
Which ads the visitor saw outside your website
What happened on other websites they visited

Analytics gives you insights into aggregate behavior. For example, you see "10 people visited page X." You see patterns, not people. You never see individual identity.