Online Utility • Developer Utilities

Base64 Encoder & Decoder

Encode strings and data to Base64 format or decode Base64 back to UTF-8 plain text.

About This Tool

Encode and decode ASCII and UTF-8 strings into Base64 format safely and reliably in your browser.

1 How to Use Step-by-Step

1. Paste text or Base64 string. 2. Click Encode or Decode. 3. Copy the output with one click.

Practical Examples

Text: 'Hello World' -> Base64: 'SGVsbG8gV29ybGQ='

Common Use Cases

• HTTP Basic Auth headers • Data URI embedding • Debugging token payloads

Common Pitfalls & Mistakes

• Confusing Base64 encoding with encryption (Base64 is not encrypted)

Frequently Asked Questions

Does it handle special characters and emojis?

Yes, our encoder uses UTF-8 byte conversion to prevent character corruption.