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Paste text on the left and click Encode to turn it into a Base64 string, or paste Base64 and click Decode to get the original text back. Encoding and decoding are UTF-8 safe, so emoji and non-Latin characters round-trip correctly, and everything runs locally in your browser.
No. Encoding and decoding happen entirely in your browser with JavaScript — your text is never sent to a server, so it works offline and is safe for sensitive data.
Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters (A–Z, a–z, 0–9, + and /, with = for padding). It is widely used to embed images, files, and tokens inside text-based formats like JSON, HTML, and email.
Yes. Text is encoded as UTF-8 before being converted to Base64, so accented letters, non-Latin scripts, and emoji all encode and decode correctly rather than being corrupted.
Decoding is tolerant of the URL-safe variant — - and _ are accepted in place of + and /, and missing padding is handled automatically. Encoding produces standard Base64 with +, /, and = padding.
No. Base64 is encoding, not encryption — anyone can decode it without a key. It makes binary data safe to transport as text, but provides no confidentiality, so never treat Base64 as a way to protect secrets.