2 tools
Security Tools
Security-oriented helpers that keep sensitive input local.
JWT
JWT Decoder
Decode JWT header and payload JSON locally without claiming signature verification.
Security Tools #Hash Generator
Generate SHA-256, SHA-384 or SHA-512 digests with the browser crypto API.
Security ToolsWhy these tools are safe to use
Tools in this category run in your browser and keep pasted input local. Use them for API debugging, test fixtures and day-to-day developer cleanup without creating an account.
Missing workflow?
Request a developer tool
Tell us what you need to convert, validate, inspect or generate. We use requests to prioritize practical browser-based utilities for Lumarc DevTools.