Developer & Security Tools
High-performance, privacy-first utilities built for engineers, DevOps, and systems administrators. Engineered to run 100% client-side with zero data transmission.
JWT Secret Key Generator
Generate cryptographically secure symmetric signing secrets for HS256, HS384, and HS512 JSON Web Tokens. Runs locally in your browser using the native Web Crypto API.
Base64 & Base64URL Converter
Encode and decode text, binary files, and JSON payloads with UTF-8 normalization and RFC 7515 URL-safe validation.
Hash & Checksum Calculator
Calculate real-time SHA-256, SHA-384, SHA-512, and SHA-1 cryptographic digests and file integrity checksums entirely in your browser memory.
UUID v4 & ULID Generator
Generate cryptographically strong, collision-resistant UUID v4 and timestamp-sorted ULID identifiers for database primary keys and distributed systems.
Our Developer Tool Security Pledge
Developer tools handling cryptographic keys, tokens, or hashes must adhere to strict zero-trust standards. Here is how we build tools at Trygg Montis:
All cryptographic computation executes strictly within your browser. Sensitive values are never sent to our servers or third parties.
Our tools utilize standard browser APIs like Web Crypto so they function seamlessly even when disconnected from the network.
We do not log generated keys, payload contents, or clipboard operations in analytics or persistent storage.