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Base64 Encoder & Decoder

Encode and decode Base64 strings safely and efficiently with support for URL-safe encoding.

Text Input

Base64 Output

Output will appear here

How It Works

Privacy First

This base64 encoder & decoder processes your data entirely in your browser. No data is uploaded to any server, ensuring complete privacy and security.

Lightning Fast

Instant processing with real-time validation and error detection. No waiting, no delays - just immediate results.

Versatile Use Cases

  • Encode binary data for transmission over text protocols
  • Store binary data in JSON or XML documents
  • Encode images or files for embedding in HTML/CSS

Mobile Friendly

Responsive design that works perfectly on all devices and screen sizes. Touch-friendly interface for mobile users.

Frequently Asked Questions

What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data in ASCII string format by translating it into a radix-64 representation.
When should I use URL-safe Base64?
Use URL-safe Base64 when the encoded string will be used in URLs or filenames. It replaces + with - and / with _, and removes padding.
Is Base64 encryption?
No, Base64 is encoding, not encryption. It's easily reversible and provides no security. Use proper encryption for sensitive data.
Why is my Base64 string longer than the original?
Base64 encoding increases size by approximately 33% because it uses more characters to represent the same data.

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