Toolbench / Developer / Base64 Encoder / Decoder
Developer
Base64 Encoder / Decoder
Convert text to Base64 and back. Full UTF-8 support, nothing leaves your browser.
Input
Output
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About the base64 encoder / decoder
Base64 encodes binary or text data using only 64 safe characters (A–Z, a–z, 0–9, + and /). It is how images, email attachments and data URLs get squeezed into places that only accept plain text.
Encoding is not encryption: anyone can decode Base64, so it protects nothing — it only makes data transport-safe. This tool encodes and decodes with full UTF-8 support, so accented letters and emoji survive the round trip.
Everything runs locally in your browser using the built-in encoder, so even sensitive strings never leave your device.