Birdor Tools · Encoding

Base64 & URL-safe Base64 Encoder/Decoder

Encode and decode Base64 with a calm, browser-only tool. Switch between standard and URL-safe alphabets, strip padding when needed, and round-trip UTF-8 text without surprises.

Convert plain text into Base64, optionally using URL-safe alphabet.

URL-safe alphabet("+" → '-'，'/' → '_' )Strip padding '='(encode only)

Input text

This text will be encoded as UTF-8 and then converted to Base64.

Output Base64

Output is never sent to any server. It stays in this tab only.

Base64 is useful for safely transporting binary or text data through systems that are not binary-safe (URLs, JSON, logs, etc.).

URL-safe Base64 uses - and _ instead of + and /, and often omits padding for shorter tokens.

Birdor processes all Base64 input and output entirely in your browser. Nothing is sent to any server. For sensitive or production secrets, prefer dedicated key management and audited libraries.