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Base64 Encoder/Decoder
Developer
Encode and decode Base64 strings instantly. Support for text, files, images, and binary data with live preview.
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Input
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Enter text to encode to Base64
Encode and decode Base64 strings for data transmission and storage. Handle text, images, and binary data.
See moreSee less about the Base64 Encoder/Decoder
Essential for email attachments, data URLs, and API authentication.
Examples
Encode Text
Input: Hello World!
Output: SGVsbG8gV29ybGQhEncode any text to Base64 format.
Decode Base64
Input: SGVsbG8gV29ybGQh
Output: Hello World!Decode Base64 back to readable text.
Key features
- Text and binary support
- URL-safe variant
- Copy to clipboard
- No server processing
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Quick answers for Base64 Encoder/Decoder
What is Base64 encoding?
Base64 is a way of representing binary data - images, files, keys - using 64 printable ASCII characters. It is commonly used to embed files in JSON, transport data through email, and inline images into CSS and HTML.
How do I encode text to Base64?
Paste your text into the editor on this page and the Base64 output appears instantly. Toggle the mode to decode a Base64 string back to its original text. Unicode and emoji are handled correctly.
Is Base64 encryption?
No. Base64 is an encoding, not encryption. Anyone with the output can decode it back to the original - do not use Base64 to hide secrets. For security, combine it with actual encryption like AES.
Why does Base64 output end in "=" characters?
The equals signs are padding. Base64 encodes data in groups of three bytes, so when the input length is not a multiple of three, "=" pads the final group to the right length.
Is the Base64 tool safe for sensitive data?
Yes. Encoding and decoding both happen in your browser. Nothing is uploaded or logged, so it is safe to use with API tokens, internal payloads, and other confidential content.