Base64 Encoder / Decoder
Encode text or files to Base64, or decode Base64 strings back to text. Supports the URL-safe variant.
100% In-Browser Processing. Your files never leave your device.
Input
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Output
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About this tool
Base64 is an encoding scheme that converts binary data into a string of ASCII characters using a set of 64 characters (A–Z, a–z, 0–9, +, /). It is commonly used to transmit binary data over text-based protocols such as email (MIME) and to embed images or files directly in HTML, CSS, or JSON. Base64 encoding is not encryption — it is just a way to represent binary data as text. Decoding converts a Base64 string back into its original binary or text form.