Base64URL Decoder

Decode URL-safe Base64.

How Base64URL decoding works

The URL-safe alphabet is mapped back to standard Base64, padding is restored, and the bytes are decoded as UTF-8 text.

Processed locally in your browser — your input is never uploaded.

What is Base64URL Decoder?

Decode URL-safe Base64. The URL-safe alphabet is mapped back to standard Base64, padding is restored, and the bytes are decoded as UTF-8 text.

Is Base64URL Decoder free to use?

Yes. Base64URL Decoder on DevCipher is completely free, with no sign-up, no limits and no ads.

Is my data safe when I use Base64URL Decoder?

Yes. Everything runs locally in your browser. Your input is never uploaded to a server, and sensitive values such as keys and tokens are never saved.

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