Encode and decode text using Base64
Base64 is a binary-to-text encoding scheme that converts binary data (like files or arbitrary bytes) into a text representation using 64 readable characters. It’s commonly used in web development for embedding images in HTML/CSS, including small assets in JSON payloads, and safely transmitting data over systems that expect plain text.
Input: Hello, ToolsByte!
Output: SGVsbG8sIFRvb2xzQnl0ZSE=
Input: U2VjcmV0OjEyMy1BcGkta2V5
Output: Secret:123-Api-key
Convert small images or SVGs to Base64 to inline them in HTML, CSS, or JSON, reducing extra requests for tiny assets.
Wrap arbitrary text in Base64 to pass it through systems that expect plain text without breaking special characters.
All encoding and decoding happen locally in your browser. We do not upload, store, or log your input or output. Base64 is an encoding—not encryption—so don’t use it as a security control for secrets.
No. Base64 is a reversible text encoding. It’s not designed to keep data secret—only to represent binary data as text.
Base64 output is ~33% larger than the original data. It’s best for small or moderate payloads—not large files.
No. Processing is client-side only. Your data never leaves your device.
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