🔐 Base64 Decoder
Decode Base64 strings back to readable plain text and UTF-8 characters instantly. 100% secure client-side decoding.
Base64 Input
Decoded Text
About Base64 Decoding
How plain text structures are re-translated from byte-coded ASCII letters.
Practical Use Cases
🔐 Inspecting API JSON Web Tokens (JWT)
Decode the payload and header sections of JSON Web Tokens to debug claims, issuers, expiration timestamps, and metadata.
🔐 Translating Network Payloads
Read log files, basic authorization headers (`Authorization: Basic <base64>`), or database dumps that use base64 obfuscation.