Encode and decode strings to and from Base64 format online. Supports UTF-8 text, handles padding automatically, and is commonly used for HTTP headers, data URIs, JWT tokens, and API authentication.
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string. It is commonly used to embed images in HTML/CSS, encode email attachments, and pass binary data in URLs or JSON.
No. Base64 is encoding, not encryption. It is easily reversible and provides no security. Anyone can decode a Base64 string without a key.
Base64 is commonly used to embed images in HTML/CSS as data URIs, encode binary data in JSON APIs and email attachments (MIME), encode the header and payload in JWT tokens (Base64url variant), and include certificate files (PEM format) in text-based configuration files.
No. Base64 is encoding, not encryption. It simply converts binary data to printable ASCII characters, and anyone can easily decode it without a key. Do not use Base64 to protect sensitive data — it provides no security. For real protection, use encryption algorithms like AES or RSA.