Encoding

Base64 Encoder

Convert standard strings and UTF-8 unicode text to standard RFC 4648 Base64 or URL-safe Base64 with instant live output and clipboard actions.

Your input is processed locally in your browser and is not sent to our server.

URL-safe Base64 (replace +/ with -_)

Plain Text Input (UTF-8)20 chars

Base64 Encoded Output

Key Features

Full UTF-8 Unicode character support
Standard and URL-safe Base64 modes
Live conversion as you type
Raw byte and character length calculation
One-click copy to clipboard
No server transmission guarantees privacy

How to Use Base64 Encoder

1Type or paste your text into the input box.
2Select standard Base64 or URL-safe encoding.
3View the generated Base64 output instantly.
4Click 'Copy' to copy the encoded string.

Frequently Asked Questions

How does UTF-8 encoding work in Base64?

DevFixHub uses the browser's TextEncoder API to convert multi-byte UTF-8 characters into binary bytes before encoding, avoiding character corruption.

What is URL-safe Base64?

URL-safe Base64 replaces the '+' and '/' characters with '-' and '_' so the string can be placed safely in URL query parameters without percent-encoding.