What is Base64 encoding?▼
Base64 is a binary-to-text encoding scheme that represents binary data as ASCII text. It's commonly used for embedding images in CSS/HTML, encoding email attachments, and transmitting data in URLs.
Is Base64 encryption?▼
No! Base64 is encoding, not encryption. Anyone can decode it. Never use Base64 to hide sensitive data — use proper encryption instead.
Does this support Unicode/UTF-8?▼
Yes. This tool properly handles UTF-8 text including emojis, accented characters, and non-Latin scripts.
Why is Base64 output ~33% larger?▼
Base64 encodes 3 bytes into 4 ASCII characters, resulting in approximately 33% size increase. This is the trade-off for text-safe representation.