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Base64 Online Encoder & Decoder

Base64 [RFC 3548] describes a method for coding 8-bit binary data into a character string that consists of only a few, code-page-independent ASCII characters. The encoding increases the space requirements of the data stream by 33%.

Keeps your data private: While most other online Base64 encoders / decoders send your data to their server, this tool does all of the processing on your computer.

Encoder / Decoder

Select a file that should be converted into a Base64-encoded data URL:

Or enter a string to be converted either to or from Base64:

Character set: