Base64 Encoder & Decoder Online
Encode and decode Base64 strings instantly. Supports text and file encoding with real-time preview.
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Frequently Asked Questions
What is Base64 encoding?
Base64 is a way to represent binary data as ASCII text. It's commonly used to embed images in HTML/CSS, send binary data in JSON, and encode email attachments.
Is Base64 encryption?
No. Base64 is encoding, not encryption. It's easily reversible and provides no security. Don't use it to hide sensitive data.
Can I encode files?
Yes — switch to the File tab to upload any file and get its Base64 representation. Useful for embedding images directly in CSS or HTML.
Why does Base64 output end with == ?
Base64 pads the output with = signs to make the length a multiple of 4. It's part of the standard encoding format.