Why Base64 Shuttle

Base64 Shuttle

Encode and decode Base64, URL, HTML, Hex, Unicode, and JWT tokens directly in your browser. 100% private, no uploads, no registration.

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Why Base64 Shuttle

Multi-Format

Base64, URL, HTML, Hex, Unicode, JWT — all encoding and decoding tools in one place.

100% Private

All encoding and decoding happens in your browser. No data is ever uploaded to any server.

Real-Time

Instant conversion as you type with debounced processing for smooth performance.

File Support

Convert files to Base64 and decode Base64 back to downloadable files with image preview.

No Registration

Use all tools instantly — no sign-up, no email, no tracking. Just open and encode.

Free Forever

No limits, no ads, no hidden fees. Full-featured encoding toolkit at zero cost.

How It Works

Choose Tool

Select your encoding tool — Base64, URL, HTML, Hex, Unicode, or JWT decoder

Input Text

Paste or type your text in the input field, or upload a file for Base64 conversion

Get Result

Get the encoded or decoded result instantly. Copy or download with one click

The Complete Encoding Toolkit for Developers

Base64 encoding is one of the most widely used encoding schemes in web development, API integration, and data transfer. From embedding images in CSS and HTML using data URIs to encoding credentials for HTTP Basic Authentication, Base64 is everywhere. But developers often need more than just Base64 — URL encoding for query parameters, HTML entity encoding for safe content rendering, Hex encoding for binary data analysis, Unicode escaping for internationalized strings, and JWT decoding for API authentication debugging. Base64 Shuttle brings all these tools together in one clean, fast, and privacy-focused interface.

Unlike other online encoding tools that upload your data to remote servers for processing, Base64 Shuttle performs every operation entirely in your browser using native JavaScript APIs. Your sensitive data — API keys, authentication tokens, proprietary strings — never leaves your device. This makes Base64 Shuttle ideal for security-conscious developers, enterprise teams, and anyone working with confidential data. The real-time preview, bidirectional encoding/decoding, and one-click copy/download features make it the fastest way to handle encoding tasks without installing any software.

Your data never leaves your device