Lightweight analytics script

~5 KB gzipped. Non-blocking. Zero layout shift. Your pages load as if Pixli wasn't there.

Script size comparison

Gzipped transfer size in KB

Pixli

~5 KB

Plausible

~1 KB

Fathom

~6 KB

Google Analytics

~45 KB

Hotjar

~100 KB

Yandex Metrica

~150 KB

How we keep it small

Pixli uses a core + lazy-load architecture. Only the essentials run on page load.

Loading architecture

Core tracker (p.js)~5 KB

Page views, sessions, sources, events, geo

Loads on every page

Loaded on demand

Heatmaps~2 KB

Recordings~2 KB

Web Vitals~1 KB

Interactions~1 KB

One script, defer loaded

The <script defer> tag never blocks HTML parsing. The browser downloads it in the background and executes it after the page is ready.

Lazy-loaded modules

Heatmaps, session recordings, Web Vitals, and interaction tracking are separate modules that load only when active for the site. Most visitors only download the core ~5 KB.

Zero DOM injection

Pixli doesn't inject any visible elements — no banners, no widgets, no modals. Zero layout shift, zero visual impact.

No dependencies

The tracker is vanilla JavaScript with no frameworks or libraries. No jQuery, no React, no lodash — just optimized code.

Impact on Core Web Vitals

Pixli measures your Web Vitals without hurting them.

0 ms

LCP

Largest Contentful Paint

Script defers — never blocks rendering

CLS

Cumulative Layout Shift

No injected UI elements

0 ms

INP

Interaction to Next Paint

No event listener overhead on user interactions

Lighter script, faster site

Replace your bloated analytics stack with a single ~5 KB script.

HTML

<script defer src="https://pixli.io/js/p.js" data-domain="yoursite.com"></script>

Initializing