What is Base64 used for?

Base64 is an encoding scheme used to represent binary data in an ASCII string format. It is commonly used for embedding image data in CSS or HTML, passing data through URLs, and basic authentication headers.

Yes. All encoding and decoding happens using native browser APIs locally on your machine. Your text is never transmitted over the internet.

Base64 Encoder & Decoder Online

What is Base64 Encoding?

Base64 is a group of binary-to-text encoding schemes that represent binary data in an ASCII string format by translating it into a radix-64 representation. By consisting only of standard ASCII characters, Base64 is widely used on the web to transmit data across channels that only reliably support text content.

This Base64 encoder/decoder allows you to quickly translate plain text into Base64 format, or vice versa, instantly.

Features

Bidirectional: Supports both encoding to Base64 and decoding from Base64.
UTF-8 Safe: Safely encodes and decodes modern unicode characters and emojis.
Client-Side Processing: Fast processing with no server latency or privacy concerns.
Error Detection: Immediately alerts you if a provided string is not valid Base64.

How to use

Select either Encode or Decode from the top toggle.
Type or paste your text into the left input panel.
The converted string will instantly appear in the right panel. Use the “Copy” button to save it to your clipboard.