Base64 Encoder & Decoder

Instantly encode plain text to Base64 or decode Base64 back to readable UTF-8 strings.

Client-Side & Fast

Interactive Workspace

Input

Output & Results

About this Base64 Encoder & Decoder

Fast client-side Base64 encoder and decoder. Supports ASCII, Unicode, binary payloads, and URL-safe Base64 conversions.

How It Works

All processing in this utility is executed directly in your browser using modern client-side Web APIs and zero server data retention. No sensitive inputs, JWT signatures, or private tokens leave your local browser memory.

Key Features

Instant real-time execution with zero network latency.
One-click copy to clipboard with formatting preservation.
Comprehensive sample data presets for immediate testing.
100% free and fully responsive across mobile, tablet, and desktop devices.

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