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Last updated: March 14, 2026

About Web Events

The Web Events Explorer lets you browse, filter, and investigate every event emitted by the Dash0 Web SDK across all your instrumented websites — and serves as the raw data layer underlying the higher-level experience in Website Monitoring.

Dash0 Web Events Explorer showing all web events of the last 30 minutes grouped by event name, with an event count chart and events table

Tip

In Dash0, the Web Events section and the Websites section relate to each other the same way that the Tracing section and the Services section do. The Websites section provides an opinionated, curated experience built on top of Web Events data — with session timelines, web vital summaries, and top-page breakdowns. The Web Events section gives you direct access to the underlying event stream so you can build custom analysis, investigate anomalies, and correlate across the full stack.

It is organized into the following areas:

Global Controls

  • Filter — narrows the event stream shown across all views. More here...
  • Command Menu — provides quick access to common actions and navigation. More here...
  • Time Picker — sets the time range for all views. More here...

Event Visualizations

  • Event Count Chart — a time-series bar chart showing event volume over the selected window, colour-coded by event type (e.g. browser.error, browser.web_vital, product_added_to_cart). Makes it easy to spot spikes in errors or drops in traffic at a glance.

Built-in Views

  • All web events — the complete, unfiltered event stream across all websites and event types. More here...
  • Page Views — filtered to browser.page_view events, distinguishing full page loads from single-page transitions. More here...
  • JavaScript Errors — filtered to browser.error events, surfacing unhandled exceptions and promise rejections. More here...
  • HTTP Requests — filtered to browser.request events, showing every frontend-to-backend HTTP call with status codes and durations. More here...
  • Custom Events — filtered to non-browser.* events, showing application-specific actions you have instrumented manually. More here...

Event Detail Panel

  • Event Sidebar — a context-sensitive detail panel that opens when an event row is selected, surfacing the event type, exact timestamp, raw body payload, all attributes, and the session context of the user who triggered the event — including a direct link to the full session replay in Websites.

Supported Event Types

The Dash0 Web SDK automatically captures the following event types. The supported types include:

  1. browser.page_view — fired on every navigation, for both full page loads and single-page application route transitions.
  2. browser.navigation_timing — detailed browser loading pipeline breakdown recorded once per full page load.
  3. browser.web_vital — LCP, CLS, and INP measurements, updated throughout the session as the user interacts with the page.
  4. browser.request — every asynchronous HTTP request made by the frontend, including status code, duration, and trace correlation context.
  5. browser.error — unhandled JavaScript exceptions and unhandled promise rejections.
  6. Custom events — any named event emitted via trackEvent() in your application code.

Reference: Web SDK Instrumentation Guide

Further Reading

  • Explore All Web Events. Explains how to read the event count chart, browse the event table, open the event detail panel, and navigate from a raw event into the full session replay.

  • Use Custom Events. Describes how to instrument custom events in your application code, what use cases they unlock (feature adoption tracking, funnel analysis, alerting on business metrics), and how to combine them with technical telemetry.

  • Understand Web Event Types. Covers the full schema for each built-in event type — including body payload format, key attributes, and how browser.web_vital values evolve over the course of a session.

  • Filter and Group Web Events. Covers the filter syntax, Group by controls, table view modes (Table, Groups, Triage), and how to save custom views as Favorites.