Base64 Encoder / Decoder
Encode text or files to Base64 and decode Base64 strings back to readable text. Instant, private, and fully browser-based.
100% Local · Never Uploaded
Plain Text
Base64 Output
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Frequently Asked Questions
Base64 converts binary data into ASCII text so it can be safely transmitted over text-based protocols like HTTP, email, or stored in JSON and XML. Commonly used for embedding images in HTML and encoding JWT tokens.
No — Base64 is encoding, not encryption. Anyone who receives Base64-encoded data can easily decode it. Do not use Base64 for security purposes.
URL-safe Base64 replaces + with - and / with _ to produce strings safe for use in URLs and filenames without percent-encoding.
This usually happens when the input contains Unicode characters not encoded with UTF-8. Our tool uses UTF-8 aware encoding by default.