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Base64 Encoder / Decoder
Convert text to Base64 or decode Base64 strings. Perfect for data encoding and web development.
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How to Use Base64 Encoder/Decoder
- 1.Select "Encode to Base64" or "Decode from Base64" mode
- 2.Enter your text (for encoding) or Base64 string (for decoding) in the input box
- 3.Click "Encode" or "Decode" to process the text
- 4.Copy the result from the output box
What is Base64?
Base64 is an encoding scheme that converts binary data into a text format using 64 different ASCII characters. It's commonly used for:
- Embedding images in HTML/CSS (data URLs)
- Sending binary data over text-based protocols (email, JSON APIs)
- Storing complex data in URLs or cookies
- Encoding credentials for HTTP Basic Authentication
Frequently Asked Questions
Is Base64 encryption?
No, Base64 is encoding, not encryption. It's easily reversible and provides no security. Never use it to protect sensitive data.
Why does Base64 make data larger?
Base64 increases data size by approximately 33% because it uses 6 bits per character instead of 8 bits.
Can I encode images with this tool?
This tool is for text encoding. For images, you'll need to first convert the image to a byte string.
Is my data secure?
Yes. All encoding/decoding happens in your browser. Your data never leaves your computer.
Common Use Cases
- • Data URLs for images
- • API authentication tokens
- • Email attachments
- • Cookie values
- • Web development