Formatting
JSON Formatter
Format and inspect JSON payloads with a focused browser-first interface.
Developer utilities
Tools
Small utilities that should be fast, direct, and useful without turning the site into a heavy SPA.
Security
JWT Decoder
Decode JWT header and payload data without sending tokens to a remote service.
Encoding
Base64 Encoder
Encode and decode Base64 values for quick API and integration checks.
Identifiers
UUID Generator
Generate UUID v4 identifiers locally for test data, jobs, and API payloads.
Writing
Markdown Previewer
Preview Markdown content locally before publishing notes or documentation.