Website Analytics Glossary: 40 Terms Every Site Owner Should Know

Analytics tools use a lot of jargon. Most of it stands for something simple, but the terminology often gets in the way of understanding. This glossary covers the 40 most common analytics terms in plain English — with examples and links to deep dives where they exist.

If you're just getting started, bookmark this page. If you've been doing analytics for a while, scan for any terms you've heard but never quite understood. The list is alphabetical.

B

Bounce Rate

The percentage of visitors who view only one page before leaving. High bounce can be good (quick-answer pages) or bad (broken UX). See our full bounce rate guide.

C

Conversion

A visitor completing a desired action — buying, signing up, contacting, downloading. Each site defines its own conversion events.

Conversion Rate

Conversions divided by sessions (or visitors), expressed as a percentage. The single most important e-commerce metric.

CTR (Click-Through Rate)

The percentage of impressions that led to a click. Used for ads, email links, and search result snippets.

D

DAU (Daily Active Users)

The number of unique users who used your site or app on a given day. Common for SaaS retention tracking.

Direct Traffic

Visits with no referrer — typed URLs, bookmarks, app links, or stripped referrers. Often a mix of brand loyalty and missing tracking.

E

Engagement Rate

The percentage of sessions that included meaningful interaction (scroll, click, or stay time). GA4's replacement for bounce rate.

Entry Page

The first page in a visitor's session. Compare entry pages with exit pages — see our entry vs exit pages guide.

Event

A tracked interaction beyond a pageview — button click, video play, form submit, scroll depth. Events power custom analytics.

Exit Page

The last page in a visitor's session. High exit rates on funnel pages signal friction; high exits on thank-you pages are normal.

F

Funnel

A defined sequence of steps a visitor takes (view product → add to cart → checkout → confirmation). Funnel analytics show where drop-off happens.

G

Goal

A specific conversion you've configured to track, like "newsletter signup" or "form submit." Goals turn raw events into business outcomes.

H

Heatmap

A visualization showing where visitors click, move, or scroll most. Useful for understanding which page elements get attention.

Hit

Legacy term for any single tracked interaction — a pageview, event, or transaction. Mostly retired in modern analytics.

I

Impression

A view of content — usually an ad or a search result. Doesn't require a click. "10,000 impressions" = the content was shown 10,000 times.

L

Landing Page

Same as entry page in analytics terminology. In marketing, it can also mean a dedicated campaign page built for conversions.

M

MAU (Monthly Active Users)

Unique users in a 30-day window. Standard retention metric for SaaS and apps. Often paired with DAU as a ratio (DAU/MAU).

N

New Visitor

A visitor the analytics tool hasn't seen before. The opposite of a returning visitor — see new vs returning visitors.

O

Organic Traffic

Visits arriving from unpaid search engine results. The most cost-effective long-term channel for content-driven sites.

P

Page Title

The HTML <title> of a page. Used in search results, browser tabs, and analytics page reports.

Pageview

A single load (or render) of a page. The most basic analytics metric. See unique visitors vs pageviews.

Path

The sequence of pages a visitor moves through during a session. Path analysis reveals natural navigation flows.

R

Referrer

The page the visitor came from. Sent by the browser via the HTTP Referer header. Empty referrers become "direct" traffic.

Returning Visitor

A visitor recognized from a previous visit. Sign of audience loyalty and content quality.

S

Sampling

When analytics tools compute reports from a fraction of data instead of all of it. Common in GA4 at high traffic volumes. Statpx does not sample.

Search Engine

Sites that send organic traffic — Google, Bing, DuckDuckGo, Yandex, Baidu, Ecosia, Brave. See tracking organic keywords.

Session

A group of pageviews from one visitor within a short time window (usually 30 minutes of inactivity ends a session).

Session Duration

Time between first and last activity within a session. See what session duration means.

Site Speed

How fast pages load. Critical for both UX and SEO. Slow sites bounce harder and rank lower.

SPA (Single-Page Application)

A site where navigation happens in JavaScript without full page reloads. Needs special tracking — see tracking SPA analytics.

Source / Medium

"Source" is where a visit came from (google, facebook, newsletter); "medium" is the category (organic, social, email). Together they categorize traffic.

T

Time on Page

How long a visitor spent on a specific page. Often estimated from the gap between pageviews; precise only on the last page if an exit-event fires.

Tracking Code

The JavaScript snippet you paste into your site to record visits. Statpx's is under 1KB.

Traffic

General term for visits to your site. "Doubling traffic" usually means doubling visitors or sessions, depending on context.

U

Unique Visitor

A distinct individual recognized within a tracking window. Multiple visits in the same day count as one unique visitor.

UTM Parameters

Tags added to URLs (utm_source, utm_medium, utm_campaign) to track campaign performance. Must be added manually to your campaign links.

V

Visit

Older term for session. Modern tools use "session" more often, but the meaning is essentially the same.

Visitor

A person who came to your site. Unique visitors = distinct people; total visitors usually = total sessions.

W

Web Analytics

The practice of measuring and analyzing website traffic to improve user experience and business outcomes. See what is web analytics.

Webhook

An automated HTTP callback fired when an event happens. Used to push analytics events to external systems in real time.

WPO (Web Performance Optimization)

The discipline of making websites faster — compression, caching, code splitting, image optimization. Directly impacts bounce rate and SEO.

Final Note

You don't need to memorize all 40 terms. You just need to recognize them when an analytics tool puts them in front of you. Each definition here is short on purpose — when you need depth, follow the linked guides. Otherwise, this page is a quick reference. Bookmark it.

The Bottom Line

Analytics jargon is not complicated — it is just vocabulary, and knowing these 40 terms is the difference between staring at a dashboard and actually reading it. The most practical step you can take right now is to open your analytics tool, find a metric you have been ignoring because the name was unclear, and look it up here. Once the terminology clicks, patterns in your data become obvious. statpx surfaces all of the metrics in this glossary — bounce rate, sessions, traffic sources, and more — in a single dashboard, with no sampling and no pageview limits.