Encode or decode Base64 strings instantly in your browser. Your data never leaves your device.
Encode and decode Base64 programmatically:
This free Base64 encoder and decoder runs entirely client-side using the browser's built-in btoa/atob functions. It supports encoding plain text to Base64 and decoding Base64 back to plain text.
Need programmatic access? Our DevTools API provides Base64 encoding/decoding along with many other developer utilities via a simple REST API with a free tier.
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