Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to readable text. Handles Unicode/emoji correctly, runs entirely in your browser.
What is Base64 used for?
Base64 represents binary data as plain ASCII text - common in email attachments, data URIs (embedding images in CSS/HTML), HTTP Basic Auth headers, and JWT tokens. It's an encoding, not encryption: anyone can decode it, so never use it to hide secrets.
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