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    Base64 Converter

    Encode and decode Base64 strings instantly.

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    Base64 Encode / Decode

    What is Base64 Encoding?

    Base64 is a binary-to-text encoding scheme that converts binary data into a set of 64 printable ASCII characters. It is commonly used to embed images in HTML/CSS, transmit data in URLs, and encode email attachments.

    Common Uses of Base64

    • Data URIs — embedding images directly in CSS or HTML
    • API Authentication — HTTP Basic Auth uses Base64 encoding
    • Email Attachments — MIME encoding uses Base64
    • JWT Tokens — JSON Web Tokens are Base64url-encoded

    Important Notes

    Base64 is not encryption. It's a reversible encoding scheme and should never be used to secure sensitive data. Always use proper encryption for passwords and secrets.