Why I built a suite of 14 web tools using ONLY Client-Side JavaScript 🚀 (Zero-Trust Architecture)

Hey DEV community! 👋 As web developers, we use online utilities every single day. We format massive JSON responses, compare code snippets, compress images, and convert PDFs. But recently, I hit a breaking point. I was working on a project involving sensitive user data, and I needed to format a massive, minified JSON payload. I instinctively googled "JSON formatter" and was about to paste the data into the first result. Then it hit me: Where exactly is this data going? Most of these "free" online tools upload your data to a backend server, process it, and send it back. For proprietary code, API keys, or confidential financial documents, this is a massive security nightmare. So, I decided to build my own solution. 🛠️ Enter: Mini-Tools.uk I spent the last few weeks engineering a suite of 14 essential daily utilities with one strict rule: Zero server uploads. 100% Client-Side processing. Here is how I tackled the technical challenges without relying on a backend: The Developer Suite (JSON