Base64 Normalizer

Decode and re-encode Base64 into a canonical standard or URL-safe form with explicit padding behavior.

Base64 / Base64URL

Normalized output

Target alphabet

Include canonical padding

ReadyWhitespace is removed by decoding and re-encoding the bytes. This is not a repair tool for arbitrary corrupted Base64.

How to use this Base64 Normalizer

Normalize standard or URL-safe Base64 alphabet, whitespace, and padding. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.