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How it works
Uses the browser’s built-in encoder with full UTF-8 support so emoji and accented characters round-trip correctly.
Frequently asked questions
Is my data private?
Yes. The Base64 Encode / Decode runs entirely in your browser. Nothing you enter is uploaded, saved to a server, or shared — it never leaves your device.
Is the Base64 Encode / Decode free?
Yes, it is completely free with no sign-up, no limits and no watermarks. Like every tool on developer tools and the rest of the platform, you can use it as often as you like.
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