Stop Installing CLI Tools: 7 Data Format Conversions You Can Do in the Browser

Every developer has been there. You need to quickly convert an IP address to hex, escape a JSON string, or turn some text into a CSV file. Your options? Install yet another npm package, find a shady website that uploads your data to a server, or write a one-off script. What if you could do all of that directly in your browser, with zero data leaving your machine? I built a collection of browser-based developer tools that handle common data format conversions entirely client-side. No server processing, no data uploads, no accounts required. Here's how they solve real problems. The Problem with Existing Tools Most online conversion tools have one or more of these issues: Privacy risk : Your data gets sent to a server. That JSON payload might contain API keys or PII. Slow round-trips : Server processing adds latency, especially for simple transformations. Bloated interfaces : You want one thing, but you get popups, ads, and sign-up walls. Client-side processing eliminates all of these. Th