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Base64 String Converter
Convert text to Base64 format and back. Supports both encoding and decoding in your browser.
What it is
Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format. It is commonly used when there is a need to encode binary data that needs to be stored and transferred over media that are designed to deal with text.
How it works
Enter the text you want to encode or the Base64 string you want to decode. The tool uses standard browser functions (btoa and atob) to perform the conversion instantly.
Examples
- Encoding:
Hello World→SGVsbG8gV29ybGQ= - Decoding:
SGVsbG8gV29ybGQ=→Hello World - Data URIs: Base64 is often used to embed small images or fonts directly in CSS or HTML files.
Limitations & notes
Base64 encoding increases the data size by approximately 33%. It is not a form of encryption and provides no security; anyone can easily decode a Base64 string.
FAQ
- Is Base64 encryption? No, it's just an encoding format. It does not use keys and is easily reversible.
- Why use Base64? To safely transmit binary data through systems that only support text (like email or certain URL parameters).