I Built a Privacy-First Developer Toolbox That Runs 100% in Your Browser

Every developer has a handful of tools they reach for daily: a JSON formatter, a Base64 decoder, a timestamp converter. I got tired of pasting sensitive data into random websites that "promise" not to store it, so I built my own. DevTools is a collection of 8 developer tools that run entirely client-side. No server uploads. No data collection. Everything happens in your browser tab. What's Inside JSON Formatter - Format, validate, and minify JSON with auto-detection of nested escaped strings Base64 Converter - Encode and decode Base64 with full UTF-8 and emoji support URL Encoder - Percent-encode/decode URLs with international character support JWT Decoder - Decode JSON Web Tokens locally without ever sending your tokens to a server Timestamp Converter - Convert between Unix timestamps and human-readable dates UUID Generator - Generate cryptographically secure UUID v4 in bulk Hash Generator - Calculate MD5, SHA-256, and SHA-512 hashes Regex Tester - Test and debug regular expressions w