Tracker Reference¶

Script Size¶

~650 bytes minified. No external dependencies.

What It Collects¶

Data	How	Privacy
Page URL	`location.href`	No PII
Referrer	`document.referrer`	Domain only stored
Viewport width	`window.innerWidth`	Bucketed: mobile/tablet/desktop
Time on page	`Date.now()` delta on navigation	Seconds only
Scroll depth	`scrollTop / scrollHeight`	Max percentage
LCP	`PerformanceObserver`	Milliseconds
INP	`PerformanceObserver` (event timing)	Milliseconds
CLS	`PerformanceObserver` (layout shift)	Score

What It Does NOT Collect¶

Cookies (none set, none read)
localStorage / sessionStorage (never accessed)
IP address (used server-side for GeoIP, then discarded)
Device fingerprint (no canvas, font, or WebGL probing)
User identifiers (daily-rotating hash prevents cross-day tracking)
Form inputs or page content

Events Sent¶

Event	When	Payload
Pageview	Page load	URL, referrer, viewport
Navigation	SPA pushState/replaceState	URL, time on previous page
`_leave`	`visibilitychange` (hidden)	Duration, scroll depth
`_vitals`	`visibilitychange` (hidden)	LCP, INP, CLS
Custom	`antics.event(name, props)`	Name + properties

SPA Support¶

The tracker automatically intercepts history.pushState and history.replaceState to track SPA page transitions. Works with React Router, Vue Router, SvelteKit, Astro, and any framework that uses the History API.

Custom Events API¶

// Track a conversion
antics.event('signup', { plan: 'pro' });

// Track a download
antics.event('download', { file: 'whitepaper.pdf' });

// Track a form submission
antics.event('contact_form', { source: 'footer' });

Event properties are stored as JSON and can be viewed in the Events page of the dashboard.