Install
One line in your <head> — that's it
Web SDK
Behavioral analytics for your website, in one line.
A lightweight, privacy-focused JavaScript library that tracks page views, sessions and custom events — with built-in A/B testing — and streams it all into B2Metric IQ.
From zero to first event in three steps
Drop in one script tag, optionally tune it with data-attributes, or take full control with a manual init.
Configure
Tune batching, event groups & debug via data-attributes
Initialize manually
Full control with the b2mInit() promise
Everything you need to understand web behavior
Auto-tracking gives you a baseline the moment the script loads — then opt into exactly the event groups, experiments and custom events you need.
Auto-Tracking
Page views, sessions & SPA nav, for free.
The moment the script loads it tracks page views, builds a user fingerprint, manages sessions and follows single-page-app route changes — no code required.
Event Tracking
Ten event groups. Activate only what you need.
Opt into modular groups — core, ecommerce, search and more — so you collect exactly the signals that matter and nothing you don't.
Custom Events
Go beyond the built-ins.
Send your own custom events with arbitrary parameters to capture the interactions unique to your product.
A/B Testing & Experiments
Assign, cache and attribute — automatically.
A built-in client requests variant assignments from the experiments service, caches them on the device, and emits exposure events so behavior is attributed to the right variant.
Offline Queue
Capture now, send when connected.
Events recorded while the browser is offline are queued locally and flushed automatically once the connection returns.
Platform Integrations
Drop into the stack you already run.
First-class guides for WordPress and other platforms get the tracker live on existing sites without touching application code.
Configure once. Collect exactly what you need.
Every option is set on the script tag or passed to b2mInit(). Activate only the event groups that matter, tune batching, and point experiments wherever you run them.
- apiKey · string · required — Your API key
- apiUrl · string · Production URL — Collector API URL
- batchSize · number · 10 — Batch send size
- sendInterval · number · 5000 — Send interval (ms)
- sessionTimeout · number · 30 — Session timeout (minutes)
- eventGroups · string[] · ['core'] — Active event groups
- debug · boolean · false — Debug mode
- experimentApiUrl · string · /experiments/assign — A/B assignment endpoint
- experimentCacheTtl · number · 86400000 — A/B cache TTL (ms)
One consistent shape for every event
Auto-tracked or custom, every event is sent in the same structured format — ready for funnels, retention and flows in B2Metric IQ.
- Every event has an event_name, ISO event_date and unix event_timestamp.
- A session_id and fingerprint-based user_id tie events to a visitor.
- event_params and user_params carry your context as key/value pairs.
The full Web SDK reference
From getting started to A/B testing and platform integrations — every page in the B2Metric Academy Web SDK guide.
- 01Introduction
- 02Getting Started
- 03Technical Architecture
- 04Platform Integrations
- 05Event Tracking
- 06Auto-Tracking
- 07Custom Events
- 08A/B Testing & Experiments
- 09Advanced Features
- 10Configuration Reference
- 11Frequently Asked Questions
- 12Support & Contact
Ship your first insight today.
Add one script tag, paste your API key, and watch events arrive in B2Metric IQ in real time.