The Studio-Grade Web Performance Analyzer
Velox is a high-performance web performance analyzer that brings GTmetrix-style professional auditing to a lightweight, client-side application. Powered by the Google PageSpeed Insights API v5, Velox provides deep technical insights into any website's speed, structure, and user experience.
Designed with a premium "studio-grade" aesthetic, Velox helps developers and SEO specialists track Core Web Vitals and optimize network bottlenecks with high-fidelity visualization.
Lighthouse-powered 0–100 scores weighted against modern performance standards. Includes a familiar A–F Letter Grade system for instant assessment.
Direct integration with the Chrome User Experience Report. See how real users experience your site (LCP, CLS, FCP, INP) across different network conditions.
A detailed, chronological visualization of every network request. Identify render-blocking scripts, large images, and slow third-party services at a glance.
A prioritized "punch list" of technical improvements. Every audit includes impact levels (High/Medium/Low) and actionable advice for optimization.
Every audit you run is automatically saved to your local browser storage. Track your optimization progress over time and catch regressions before they hit production.
Velox is a marvel of modern vanilla web engineering, built for speed and zero dependencies.
- Core Engine: Vanilla JavaScript (ES6+)
- Design System: Custom CSS Design System (Glassmorphism & Neon accents)
- API: Google PageSpeed Insights API v5
- Typography: Inter & JetBrains Mono (Google Fonts)
- Hosting: Optimized for Vercel
- A modern web browser.
- (Optional) A Google Cloud API Key for increased rate limits.
Velox is a static application. You can run it instantly:
# Clone the repository
git clone https://github.com/YukiStackAI/Velox.git
# Navigate to the folder
cd Velox
# Serve locally (recommended)
npx serve .Velox is pre-configured for growth:
- Adsterra Integrated: Built-in slots for Native Banners and Sidebar Ads.
- SEO Ready: Fully configured
sitemap.xml,robots.txt, and Open Graph tags for search engine visibility.
This project is licensed under the MIT License - see the LICENSE file for details.