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Base64 Encode / Decode
Type or paste text and choose Encode or Decode. Handles full UTF-8 (emoji, accents). Nothing leaves your browser.
About Base64 Encode / Decode
Base64 encodes binary or text data using 64 printable ASCII characters, so it can travel safely through systems that only handle text — data URLs, email attachments, JSON, and HTTP headers. This tool uses UTF-8 aware encoding, so accents and emoji round-trip correctly. It's not encryption: Base64 is trivially reversible and provides no security.