Base64 Encode & Decode
Encode and decode Base64 strings instantly in your browser. Supports text, URLs, and data URIs. Free online tool, 100% private.
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Features
100% Browser-Based
All encoding and decoding happens in your browser. Your data never leaves your device.
Free & No Sign Up
No registration, no limits, no hidden fees. Just open and use.
Instant Results
Real-time encoding and decoding as you type, zero waiting.
Bidirectional Conversion
Switch between encoding and decoding with one click. Supports text, URLs, and data URIs.
Frequently Asked Questions
Is my data sent to any server?
No. All encoding and decoding happens entirely in your browser using JavaScript. Your data never leaves your device.
What is Base64 encoding?
Base64 is a binary-to-text encoding scheme that represents binary data as an ASCII string. It is commonly used to encode data for email, URLs, and data URIs.
Can I encode non-ASCII characters?
Yes. The tool handles Unicode characters properly by converting them to UTF-8 before Base64 encoding, ensuring correct round-trip conversion.