BeanNest tools
Developer Tools
Format, compare, encode, inspect, and convert developer data without sending source text away.
Base64 Encode & Decode
Encode UTF-8 text to standard Base64 or Base64URL and strictly decode it back to text without sending source content away.
Open tool →URL Encoder & Decoder
Encode or decode URL components and full URLs locally with explicit scope, malformed-percent errors, swap, and copy.
Open tool →UUID v4 Generator
Generate one or up to 500 cryptographically secure UUID v4 values locally with regenerate and copy-all actions.
Open tool →SHA-2 Hash Generator
Generate SHA-256, SHA-384, and SHA-512 fingerprints for local text or bounded local files using browser Web Crypto.
Open tool →Unix Timestamp Converter
Convert explicit Unix seconds or milliseconds to UTC/local/ISO time and convert local or UTC dates back to epoch values.
Open tool →What to expect
Useful browser results, with the browser limits explained.
BeanNest keeps the main task compact and puts deeper guidance below the work surface. A tool reports what it can actually observe or produce in your browser; it does not claim to certify hardware, formats, or system behavior that the web platform cannot verify.
Private by design
The tools in this category are designed to keep working input in the browser. Each tool page states its exact privacy behavior and any browser or device limitations that matter for the result.