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Numio

Base64url Encoder / Decoder

Convert UTF-8 text and URL-safe Base64. Encoding omits padding; decoding validates alphabet, padding and UTF-8.

Mode

Input

8 chars1 lines

Result

Type or paste on the left — the result updates as you type.

Convert UTF-8 text and URL-safe Base64. Encoding omits padding; decoding validates alphabet, padding and UTF-8.

Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.

Format references

Tool page updated: