Free Base64 Encoder & Decoder
Encode plain text to Base64 or decode a Base64 string back to plain text. Useful for working with APIs, email attachments, data URIs, and configuration files. All processing happens in your browser — nothing is sent to any server.
About This Tool
Base64 is an encoding scheme that represents binary data as ASCII text using 64 printable characters. It is not encryption — anyone can decode it — but it is widely used to safely transmit data over text-based channels such as HTTP headers, JSON payloads, and email (MIME).
Common uses include encoding images for data URIs (data:image/png;base64,...),
encoding credentials in HTTP Basic Auth, and embedding binary files in JSON or XML.
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