Base64 Encode/Decode
Encode and decode text to and from Base64 format online
What is Base64 Encoder/Decoder?
Base64 Encoder/Decoder converts text to Base64 encoding and back. Base64 is a binary-to-text encoding scheme used to safely transmit binary data through text-only channels. This tool runs entirely client-side in your browser -- your data is never sent to any server.
Key Features
Instant Encode and Decode
Convert text to Base64 or decode Base64 strings back to readable text with a single click. Supports full UTF-8 encoding.
Client-Side Processing
All encoding and decoding happens in your browser. Your data never leaves your device, making it safe for sensitive content.
One-Click Copy
Copy the encoded or decoded result to your clipboard instantly for use in your code, emails, or data URIs.
Common Use Cases
Encode image data for embedding directly in HTML or CSS as data URIs. Decode Base64-encoded strings found in API responses, JWTs, or email headers. Prepare binary data for safe transmission in JSON payloads, XML documents, or URL parameters.
How It Works
Enter Text
Type or paste your text in the input field
Choose Action
Click Encode to convert to Base64, or Decode to convert back
Copy Result
Copy the result to your clipboard with one click
Frequently Asked Questions
Last updated: Feb 27, 2026