Base64 Encode / Decode
Free online Base64 encoder and decoder with UTF-8 support. Runs entirely in your browser—nothing is uploaded.
Processed locally in your browser — nothing is uploaded.
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About this tool
Base64 encodes binary or text data into ASCII-safe strings for APIs, data URIs, and configs. This free tool encodes and decodes UTF-8 Base64 entirely in your browser—nothing is uploaded.
Frequently asked questions
- Is Base64 encryption?
- No. Base64 is encoding for transport, not encryption. Anyone can decode it. Do not use it to hide secrets.
- Does this support Unicode?
- Yes. Input is treated as UTF-8, so emoji and non-Latin characters round-trip correctly.
- Is my data uploaded?
- No. Encoding and decoding run locally in your browser tab.