Base64 string encoder/decoder
Simply encode and decode string into a their base64 representation.
String to base64
Base64 of string
Invalid base64 string
About Base64 string encoder/decoder
This free Base64 string encoder/decoder tool helps you Simply encode and decode string into a their base64 representation.. No signup required.
Key features
- Fast, simple, and ready to use.
- Live preview to validate results.
- Copy output with one click.
- Client-side processing for better privacy (most tools).
Use cases
- Daily development and debugging
- Data conversion and cleanup
- Quick validation and troubleshooting
- Documentation and learning
Frequently Asked Questions
Is Base64 encryption?
No. Base64 is an encoding scheme, not secure encryption.
Why does decoding fail?
Input may contain invalid characters, missing padding (=), or be URL-safe Base64. Check input or mode.
Can I encode Unicode text?
Yes, typically via UTF-8 bytes before encoding.
Is my data uploaded?
Usually processed locally in your browser.