Base64 Encoder / Decoder
Encode or decode text and files to Base64 format. Perfect for data transmission, embedding files in code, and handling binary data in web applications.
π Input Text
0 characters
π Base64 Output
0 characters
π Base64 Input
0 characters
π Decoded Output
0 characters
π File to Base64 Encoder
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Click to select a file or drag and drop
Supports text files, images, documents (max 10MB)
π Base64 File Output
0 characters
π‘ Base64 Examples
Simple Text Encoding
Before: Hello World!
After: SGVsbG8gV29ybGQh
Special Characters
Before: Hello δΈη! π
After: SGVsbG8g5LiW55WMISAg8J+MjQ==
JSON Data
Before: {"name":"John","age":30}
After: eyJuYW1lIjoiSm9obiIsImFnZSI6MzB9
HTML Snippet
Before: <h1>Title</h1>
After: PGgxPlRpdGxlPC9oMT4=
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π§ How to Use the Base64 Encoder/Decoder
1
Choose Your Operation
Select whether you want to encode text to Base64, decode Base64 back to text, or encode files to Base64 format for embedding or transmission.
2
Enter Text or Upload File
For text encoding/decoding, simply type or paste your content. For file encoding, click to select a file or drag and drop it into the upload area.
3
Automatic Processing
The tool processes your input automatically as you type or upload. Base64 validation is performed in real-time to ensure data integrity.
4
Copy and Use Results
Copy the processed result using the copy button. For file encoding, you can also download the Base64 output as a text file for later use.
β Frequently Asked Questions
What is Base64 encoding and why is it used?
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Base64 is a binary-to-text encoding scheme that converts binary data into ASCII text format using 64 printable characters (A-Z, a-z, 0-9, +, /). It's commonly used for embedding images in HTML/CSS, transmitting data over text-based protocols like email, storing binary data in JSON/XML, and encoding data for URLs and APIs.
Why does Base64 encoding increase the data size?
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Base64 encoding increases data size by approximately 33% because it uses 4 ASCII characters to represent every 3 bytes of original data. This overhead is the trade-off for making binary data safe to transmit over text-based systems that might not handle binary data correctly.
Can I encode any type of file to Base64?
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Yes, any file can be encoded to Base64 - text files, images, videos, documents, executables, etc. However, this tool has a 10MB file size limit for performance reasons. Large files will result in very long Base64 strings that may be impractical to use in some applications.
Is Base64 encoding secure or a form of encryption?
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No, Base64 is NOT encryption or security - it's simply an encoding format. Anyone can easily decode Base64 text back to the original data. Never use Base64 alone to protect sensitive information. It's designed for data compatibility, not security. Use proper encryption methods for sensitive data.
What does the "=" padding at the end of Base64 mean?
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The "=" characters are padding used to make the Base64 string length a multiple of 4. Since Base64 encodes 3 bytes into 4 characters, padding is needed when the input length isn't divisible by 3. One "=" means 2 bytes were encoded, two "==" means 1 byte was encoded. This padding ensures proper decoding.
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