Focus: Chunking, Encryption, Free Stack
One of the most valuable, high-utility tools you can build from scratch is a . By leveraging the power of HTML5 APIs, modern CSS3 layouts, and vanilla JavaScript , you can create a private, browser-based file-sharing platform without relying on expensive cloud storage or heavy backend frameworks.
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Create a master repository on GitHub titled "60-vanilla-web-projects". Include a beautifully formatted README with screenshots, live demo links, and a brief explanation of what you learned from every single project.
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It’s a among the 60, demonstrating that you can solve real‑world problems (secure large file transfer) with pure web standards.
filename.zip (0 MB) Ready to secure and encrypt... Your Secure Sharing Link (End-to-End Encrypted): Copy That would cover all aspects
senderStatusDiv.innerHTML = "🔐 Generating ephemeral encryption key & processing chunks... (large file may take a moment)"; encryptBtn.disabled = true; try const chunkSize = 1024 * 1024; // 1MB chunks for streaming const file = currentFile; const totalChunks = Math.ceil(file.size / chunkSize); const key = await deriveKeyFromPassword(); // fresh AES-256 key // export key to embed in token (so receiver can decrypt) const rawKey = await crypto.subtle.exportKey("raw", key); const keyBase64 = Array.from(new Uint8Array(rawKey));
You cannot load a 20GB video file directly into a browser's RAM without crashing the tab. To handle large files safely, JavaScript must slice the file asset into small, readable chunks (usually 16KB to 64KB arrays) using the HTML5 File and Blob APIs. javascript
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