Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 strings instantly. Supports standard and URL-safe Base64.
Instant Conversion
Convert text to Base64 and back in milliseconds, right in your browser.
100% Private
All encoding and decoding happens locally. Your data never leaves your browser.
URL-Safe Option
Support for URL-safe Base64 encoding that's safe to use in URLs and filenames.
What is Base64?
Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format. It's commonly used to encode data that needs to be stored or transferred over media designed to handle text.
Common uses include:
- Embedding images in HTML/CSS (data URIs)
- Encoding email attachments (MIME)
- Storing complex data in JSON
- API authentication (Basic Auth)
- JWT token components
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