Base64URL Encoder & Decoder

Base64URL Encoder & Decoder: Encode UTF-8 text as URL-safe Base64 or decode Base64URL back to text.

Base64URL Encoder & Decoder

Base64URL Encoder & Decoder: Paste text to encode in URL-safe, unpadded Base64, or paste Base64URL text and select Decode. Both transformations use UTF-8.

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How to use Base64URL Encoder & Decoder

Paste text to encode in URL-safe, unpadded Base64, or paste Base64URL text and select Decode. Both transformations use UTF-8.

Example

`Hello` encodes to `SGVsbG8`; decoding it returns `Hello`.

What to know

Base64URL is not encryption. Invalid alphabet, impossible length or invalid UTF-8 bytes are rejected. The output omits Base64 padding.