HeadKit by Deleix — Lightweight Changelog Software

Ultra-lightweight in-app release notes widget (<5KB) with Shadow DOM and zero cookies.

What is HeadKit?

HeadKit by Deleix is an ultra-lightweight changelog software platform designed for modern SaaS businesses, web applications, and independent developers. Delivered through a single deferred script tag, HeadKit renders a slide-over notification drawer inside an open Shadow DOM root to ensure complete CSS isolation from host styles.

Unlike legacy competitors (Beamer, AnnounceKit), HeadKit plants zero tracking cookies, ensuring immediate compliance with the EU GDPR, UK Data Protection Act, and California CCPA without requiring user consent banners.

Core Competitive Advantages

  • Sub-5 KB Script: Vanilla TypeScript compiled with zero dependencies. Zero hydration penalty and zero Core Web Vitals degradation.
  • Shadow DOM Encapsulation: Complete CSS isolation prevents external stylesheets from distorting notification elements.
  • Zero Cookies: 100% privacy-compliant read tracking computed locally in visitor storage.
  • Flat Pricing: Starter plan at $12/month ($99/year) with no monthly active user (MAU) penalties.
  • Global Edge Network: Sub-30ms TTFB across the US, Canada, UK, and European capitals via Cloudflare Workers.