I built 180+ free browser-side developer tools — no login, no data uploads

I got tired of having 12 different browser tabs open for developer tools. One tab for JSON formatting. Another for Base64. One for regex testing. One for JWT decoding. Another for converting that MySQL CLI output into something readable... So I built Devy Tools — 180+ free developer utilities in a single website. The one thing that makes it different Everything runs 100% in your browser. No server. No data uploads. No account required. Your API keys, JWT tokens, database output, and sensitive configs never leave your device — ever. Most online tools quietly send your data to their servers. Devy Tools uses the Web Crypto API and standard browser APIs to do all processing locally. You can even use it offline after the first load. What's inside 🗂️ Data Conversion CSV ↔ JSON ↔ XML — bi-directional converters CSV → HTML Table — paste CSV, get a styled table with 7 themes JSON → HTML Table — supports arrays of objects, 2D arrays, single objects XML → HTML Table — auto-detects repeating elem