web-performance
Repositories (897)
External website health check: 16+ security, SEO, maintenance and performance fundamentals in plain language, for actionable results.
Apple-inspired cinematic VR website featuring scroll-driven frame animation, dual HTML5 canvas rendering, asset preloading, and high-performance JavaS...
Site de l'agence OR-Web (Bordeaux) — HTML/CSS/JS vanilla, Express minimal, SSR SEO, 100/100 PageSpeed mobile
A smart desktop utility to subset icon fonts, analyze web projects, and generate lightweight custom fonts.
Strip the editor bloat out of an SVG in your browser. Keep gradients, masks, and animation. See the before and after side by side.
Live in-browser micro-benchmarks of your device's cache, RAM, IndexedDB, and network latency, animated on one logarithmic scale.
Paste text or code and see its raw byte size versus gzip and deflate compressed size, right in your browser. No server, no tracking, no third-party sc...
Sitio corporativo de Nébula Sur con React y Vite: servicios locales, consultoría online, contenido multidioma y SEO técnico.
Local CLI for converting and compressing images to WebP with Sharp.
Turn a HAR file into a ranked third-party cost report with defer/remove/self-host/facade recommendations (terminal, JSON, Markdown, HTML).
Relatório técnico web interativo documentando o diagnóstico de infraestrutura e retenção de cache (Cloudflare) no ambiente de produção.
Auditool audits a website's health from a single URL, showing a per-axis score alongside an aggregated global score.
PageSpeed Analyzer für Agenturen und Entwickler: automatisierte Sitemap-Scans mit Google PageSpeed Insights, Core Web Vitals inkl. CrUX-Felddaten, Lan...
A digital clock with live updates using HTML, CSS, and JavaScript.
Site fan statique pour Dune (2021) — projet pédagogique d'intégration web.
Flame-graph-style web performance auditing agent skill
Agent skill for page performance auditing — Google PageSpeed Insights / Lighthouse / Core Web Vitals. Preserves layout, tracking, UTMs and conversion....
Turn PageSpeed Insights into an agent-actionable fix plan. Pure Python, zero dependencies - CI gate, before/after diff, sitemap crawl, self-contained...
Open-source interaction-design intelligence for AI coding agents - securely discover, select, adapt and validate UI motion, effects and interaction pa...
A public, auditable gallery of live UK Web Marketing client sites: the industry, the live URL, and the exact stack behind each (Astro, self-hosted fon...
Source-only NGINX response compression module in Rust with gzip, deflate, Brotli and Zstandard, supporting dynamic/static builds and HTTP/1.1–3.
Modern single-page frontend portfolio built with Vite, SCSS (BEM), and vanilla JavaScript. Focus on scalable architecture, clean layout, accessibility...
Fast, parallel image optimizer for nginx — generates WebP/AVIF/JPEG XL with double extensions and automatic Accept-header handling.
Public marketing landing for KonquerAI — an invoicing & tax-compliance SaaS for Spanish trades. Built with Astro + Tailwind v4 · zero-runtime-JS · pre...
Licensable architecture-portfolio template — a design-led frontend case for editorial motion, bilingual UX, accessibility, SEO and measured performanc...
A performance checklist for media-heavy, animation-heavy apps that must stay smooth on cheap hardware.
Batch CLI that converts images, GIFs, and video to web-optimized WebP, animated WebP, and WebM — lossy compression, website-standard size presets, and...
Angular v14–v22 performance benchmark: 9 idiomatic app variants + automated harness (build time, bundle size, Lighthouse, runtime FPS). Companion to a...
Interactive simulator comparing how the same assets load under HTTP/1.1, HTTP/2, and HTTP/3 — multiplexing, head-of-line blocking, and prioritization.
AI-powered Next.js SEO skill for metadata, structured data, content optimization, keyword research, and search-friendly page generation.
Personal site for jayjz — jaysystems.dev
Lightweight WordPress plugin that preloads featured images, fonts, CSS & JS to improve LCP and Core Web Vitals.
High-traffic fan landing: Astro with zero JS by default, edge-cached Redis counter, CI-enforced performance budget
Modern front-end lab in Next.js 15 + React 19: Server Components, streaming, design tokens, light/dark theming, virtualization, state, CWV, and a11y d...
A tiny 100% client-side bundle size estimator: raw + real gzip size (via CompressionStream), brotli estimate and load times. No backend, no tracking....
Benchmark your live data grid under real market load — display staleness, update latency, frame stability, money formatting, XSS, and WCAG, measured i...
Sub-2s storefronts using Shopify Hydrogen and Oxygen frameworks. Maximum speed, maximum control — for agencies pitching the most technically demanding...
Bento-style developer portfolio built with React, Vite, and Cloudflare Pages Functions, featuring real-time integrations and modular UI cards.
Project .taste SDK and Taste Gate, an explainable WebMCP preview gate with human-controlled reveal.
Lint browser resource hints (preload/prefetch/preconnect) and fetchpriority in built HTML — scored, CI-ready, zero dependencies.
Native CSS scroll-driven animations and the View Transitions API — patterns, performance profiling, and accessible motion for frontend developers.
Demo de portfolio: landing de astrología evolutiva con Glassmorphism, CSS crítico inline y marcado Schema.org.
A performance case study: one landing page built twice, baseline vs optimized, measured with real Lighthouse numbers. Astro, zero JS, Cloudflare.
Audit web performance with a multi-agent pipeline that turns browser data into actionable fixes for Core Web Vitals.
A CLI tool that benchmarks a list of URLs for HTTP caching correctness and compression efficiency, s
Interactive PHP simulator for hidden per-session request serialization, lock queues, blocked workers, early close, and stateless claims.
Replace the Windows shell with a gamepad-driven interface for handheld devices to improve performance and navigation.
架空企業コーポレートサイト - Astro × Xserver
Lightweight, accessibility-focused profile site for a non-profit consultancy — Astro, Tailwind, Netlif