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Base64 Converter

Encode plain text into Base64 format or decode Base64 data back into readable text.

100% Secure In-Browser Encoding
All encoding calculations execute in your local system sandbox. Your variables are completely private and secure.
Converter Output

How to convert text to and from Base64

  1. Type or paste your text values into the Input Text Data field.
  2. Click Encode to Base64 to transform text into characters or click Decode Base64 to read code blocks.
  3. Your output is generated instantly in the right-side box.
  4. Click the Copy icon on the output header to save the result.

Frequently Asked Questions

What is Base64 representation used for?

Base64 is an encoding algorithm used to represent binary data in an ASCII string format. It is widely used in CSS embedded files, JSON transfers, and email attachments (MIME) to prevent data corruption during transport.

Is this file size-limited?

No. The conversion is done inside your local browser memory space. Keep inputs below 20MB for a lag-free experience.