What is Base64?

Base64 is an encoding method used to convert binary or text data into ASCII characters. It is commonly used in email, APIs, JSON files, and JWT tokens to safely transmit data.

How to use this tool

Paste text into the left field and click Encode to convert it to Base64. Paste Base64 into the right field and click Decode to convert it back to text. All operations run locally in your browser.

Common use cases

• Debugging JWT tokens
• Embedding images or files in HTML
• Working with APIs

Related tools: Image to Base64, JWT Decoder