Base64 Tools
Encode and decode Base64 data instantly. Perfect for encoding text, URLs, or data for transmission and storage. Supports UTF-8 encoding for international characters.
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data for transmission over media that are designed to deal with text, such as email or URLs. Our Base64 Tools make it easy to encode and decode data securely in your browser.
Secure Encoding
All processing happens in your browser - data never leaves your device
UTF-8 Support
Full support for international characters and emojis
Encode to Base64
Convert plain text to Base64 format for safe transmission or storage
Decode from Base64
Convert Base64 strings back to readable text
Select Mode
Text to Encode
Base64 Result
How to Use Base64 Tools
Choose Mode
Select whether you want to encode text to Base64 or decode Base64 to text.
Enter Data
Type or paste your text or Base64 string in the input area.
Process
Click the action button to encode or decode your data instantly.
Copy Result
Copy the result to your clipboard for use in your projects.
Common Use Cases
- ✓Data URLs: Embed images or files directly in HTML/CSS using Base64 data URLs, eliminating separate HTTP requests.
- ✓Email Attachments: Encode binary data for safe transmission in email systems that only support text.
- ✓API Authentication: Encode credentials for Basic HTTP Authentication headers in API requests.
- ✓URL Parameters: Encode complex data for safe transmission in URL query parameters.
- ✓Configuration Files: Store binary data or special characters in JSON or XML configuration files.
Base64 Character Set
A-Z, a-z, 0-9
62 characters representing values 0-61
+, /
Two additional characters for values 62 and 63
=
Padding character used at the end to make the length a multiple of 4
Output Size
Base64 encoding increases data size by approximately 33%
Frequently Asked Questions
Is Base64 encryption secure?
No. Base64 is encoding, not encryption. It provides no security - anyone can decode Base64 data. For secure data, use proper encryption methods like AES or RSA.
Why does my decoded text look strange?
This usually happens when the original text contained non-ASCII characters and wasn't properly UTF-8 encoded before Base64 encoding. Our tool handles UTF-8 correctly.
Is my data secure when using this tool?
Yes! All encoding and decoding happens entirely in your browser. Your data is never sent to our servers or stored anywhere.
What is the maximum size limit?
There is no strict limit, but very large data (over 10MB) may cause browser performance issues. For large files, consider using command-line tools.
Can I encode binary files?
This tool is designed for text. For binary files (images, PDFs, etc.), you would need to read them as binary data first. Consider using dedicated file encoding tools for binary data.
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