Dev Combo — URL / Base64 / JWT / Hash Encoder & Decoder
Four essential dev tools in one page: URL encode/decode, Base64 encode/decode, JWT inspector (decode header + payload, no verify), and SHA-256 / SHA-512 hashing. All client-side.
⚠️ Decodes header + payload only — does not verify signature. Verification must happen server-side.
Header
Payload
Common use cases
- URL encoding: query strings, URL fragments, API parameters
- Base64: inline images in CSS / email, Basic Auth headers
- JWT decoding: debugging token contents (never trust an unverified JWT!)
- SHA hashing: file integrity, tamper-detection, password pre-processing