Base64 Encoder & Decoder
📦 Base64 Encoder & Decoder Source Code $4.99
Get the complete, ready‑to‑deploy HTML file with all styling and logic. This is the exact code powering the demo above — no dependencies, fully offline, and 100% client‑side. Perfect for your portfolio, client projects, or resale. One-time purchase, lifetime access.
What is a Base64 Encoder & Decoder?
Base64 encoding converts any text or binary data into a safe ASCII string using a 64-character set, making it ideal for transmitting data over text-based protocols like email or storing data in JSON. A decoder reverses this process back to the original content. This tool handles both operations instantly, including Unicode support, so you can encode non-Latin characters and decode them without corruption. Everything runs locally, so your data remains private.
How to Use
- Type or paste your text into the input panel. It can be plain text, emoji, or even an existing Base64 string.
- Click "Encode" to convert the input to a Base64 representation, or "Decode" to turn a Base64 string back into readable text.
- Copy the result with the copy button, or click "Clear" to start over. No data ever leaves your browser.
Frequently Asked Questions
Is my data safe? Does anything get uploaded?
Absolutely. All encoding and decoding happens locally in your browser using JavaScript. No data is ever sent to a server, stored, or logged. You can process sensitive information with full confidence.
Does this tool work offline?
Yes, completely. There are no external libraries or server calls. Save the HTML file and you'll have a fully functional Base64 encoder/decoder ready anytime, even without an internet connection.
Can it handle non‑English characters?
Yes. The tool uses the modern TextEncoder and TextDecoder APIs under the hood, so it correctly encodes and decodes any Unicode text—including emoji, Chinese, Arabic, and more.
Disclaimer: This tool performs all operations locally in your browser. No data is stored, transmitted, or logged.