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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Web Utilities</title>
<meta name="description" content="A collection of single-file, portable web utilities. Your data never leaves the browser. Ever. Unless there's a supply chain attack. In which case, tough luck.">
<!-- Google Fonts -->
<link rel="preconnect" href="https://fonts.googleapis.com">
<link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
<link href="https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=Inter:wght@400;500;600&display=swap" rel="stylesheet">
<!-- Tailwind CSS -->
<script src="https://cdn.tailwindcss.com"></script>
<script>
tailwind.config = {
theme: {
extend: {
fontFamily: {
sans: ['Inter', 'sans-serif'],
outfit: ['Outfit', 'sans-serif'],
},
colors: {
brand: { 500: '#3b82f6', 600: '#2563eb' }
}
}
}
}
</script>
<style>
body { font-family: 'Inter', sans-serif; }
.bg-grid {
background-size: 20px 20px;
background-image:
linear-gradient(to right, #f1f5f9 1px, transparent 1px),
linear-gradient(to bottom, #f1f5f9 1px, transparent 1px);
}
</style>
</head>
<body class="bg-gray-50 text-gray-800 font-sans min-h-screen flex flex-col bg-grid">
<main class="flex-1 flex flex-col justify-center items-center px-4 py-16 relative overflow-hidden">
<div class="max-w-4xl w-full text-center mb-12 relative z-10">
<h1 class="text-4xl font-extrabold font-outfit mb-3 text-gray-900 tracking-tight">
Web Utilities
</h1>
<p class="text-lg text-gray-600 max-w-2xl mx-auto">
A collection of single-file, portable web utilities. Your data never leaves the browser. Ever. Unless there's a supply chain attack. In which case, tough luck.
</p>
</div>
<div class="max-w-4xl w-full grid grid-cols-1 md:grid-cols-2 gap-6 relative z-10">
<a href="./webutils/pdf-scanner.html" class="bg-white border border-gray-200 rounded-xl p-6 flex flex-col justify-between transition-all duration-200 hover:shadow-md hover:border-blue-500 group">
<div>
<div class="flex items-center justify-between mb-3">
<h2 class="text-xl font-bold font-outfit text-gray-900 group-hover:text-blue-600 transition-colors">
Scanify Pro
</h2>
<div class="w-8 h-8 rounded-lg bg-gray-100 flex items-center justify-center text-gray-500 group-hover:bg-blue-600 group-hover:text-white transition-all duration-200">
<svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3" />
</svg>
</div>
</div>
<p class="text-sm text-gray-600 group-hover:text-gray-700 transition-colors leading-relaxed">
High-performance document scanner simulation. Add tilt, blur, grain, and threshold effects to PDFs to simulate real scanner output. Local processing only.
</p>
</div>
</a>
<a href="./webutils/subnet-calculator.html" class="bg-white border border-gray-200 rounded-xl p-6 flex flex-col justify-between transition-all duration-200 hover:shadow-md hover:border-blue-500 group">
<div>
<div class="flex items-center justify-between mb-3">
<h2 class="text-xl font-bold font-outfit text-gray-900 group-hover:text-blue-600 transition-colors">
Visual Subnet Calculator
</h2>
<div class="w-8 h-8 rounded-lg bg-gray-100 flex items-center justify-center text-gray-500 group-hover:bg-blue-600 group-hover:text-white transition-all duration-200">
<svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3" />
</svg>
</div>
</div>
<p class="text-sm text-gray-600 group-hover:text-gray-700 transition-colors leading-relaxed">
Split, join, and visualize IPv4 subnets effortlessly. Light-themed, responsive dashboard with real-time math.
</p>
</div>
</a>
<a href="./webutils/encoder-decoder.html" class="bg-white border border-gray-200 rounded-xl p-6 flex flex-col justify-between transition-all duration-200 hover:shadow-md hover:border-blue-500 group">
<div>
<div class="flex items-center justify-between mb-3">
<h2 class="text-xl font-bold font-outfit text-gray-900 group-hover:text-blue-600 transition-colors">
String Codec
</h2>
<div class="w-8 h-8 rounded-lg bg-gray-100 flex items-center justify-center text-gray-500 group-hover:bg-blue-600 group-hover:text-white transition-all duration-200">
<svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3" />
</svg>
</div>
</div>
<p class="text-sm text-gray-600 group-hover:text-gray-700 transition-colors leading-relaxed">
Universal local utility to safely encode, decode, and hash text using formats like Base64, Base32, Base58, Hexadecimal, Binary, UUEncode, URL Encoding, and ROT13. Includes robust cryptographic checksum algorithms (MD5, SHA-1, SHA-256, SHA-512) via CryptoJS and intelligent auto-detection for decoding payloads.
</p>
</div>
</a>
<a href="./webutils/cidr-aggregator.html" class="bg-white border border-gray-200 rounded-xl p-6 flex flex-col justify-between transition-all duration-200 hover:shadow-md hover:border-blue-500 group">
<div>
<div class="flex items-center justify-between mb-3">
<h2 class="text-xl font-bold font-outfit text-gray-900 group-hover:text-blue-600 transition-colors">
CIDR Aggregator
</h2>
<div class="w-8 h-8 rounded-lg bg-gray-100 flex items-center justify-center text-gray-500 group-hover:bg-blue-600 group-hover:text-white transition-all duration-200">
<svg xmlns="http://www.w3.org/2000/svg" class="h-4 w-4" fill="none" viewBox="0 0 24 24" stroke="currentColor">
<path stroke-linecap="round" stroke-linejoin="round" stroke-width="2" d="M14 5l7 7m0 0l-7 7m7-7H3" />
</svg>
</div>
</div>
<p class="text-sm text-gray-600 group-hover:text-gray-700 transition-colors leading-relaxed">
A single-file visual utility to safely and optimally aggregate massive sets of IP addresses and subnets into their minimal corresponding CIDR blocks.
</p>
</div>
</a>
</div>
</main>
<footer class="py-8 text-center text-xs text-gray-500 border-t border-gray-200 relative z-10 bg-white">
<p>© 2026 sruffilli. github.io. Built with passion & AI.</p>
</footer>
</body>
</html>