Convert any text to and from Base64 with full Unicode support, including a URL-safe variant (-/_ instead of +//, no padding) for JWTs and URL parameters. Encode data for transport or decode Base64 strings back to readable text — entirely in your browser.
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Convert any text to and from Base64 with full Unicode support, including a URL-safe variant (-/_ instead of +//, no padding) for JWTs and URL parameters. Encode data for transport or decode Base64 strings back to readable text — entirely in your browser.
Whether you're a professional or just need a quick result, the Base64 Encoder / Decoder gives you a fast, reliable developer tool that works instantly in your browser. There's no software to install and nothing to sign up for — open the page, get your result and move on. Because everything runs on your own device, it's private by default and available whenever you need it.
The Base64 Encoder / Decoder is part of TechToolsCenter — a free, privacy-first collection of 126+ online tools. Everything runs 100% in your browser, so your data stays private and results are instant.
Input
Output
Formats
Add your code, data or string. It's parsed and processed entirely in your browser.
Set the format, encoding or rules for the task. Output updates instantly as you change them.
Review the result, catch errors early, and copy exactly what you need.
Copy the output or download it. Nothing you paste ever touches a server.
Tips
Common mistakes
Best practices
Input
Text — e.g. base64
Output
Text, generated instantly in your browser
Yes. Emoji and non-Latin characters are handled correctly during both encoding and decoding.
It's free, private and works instantly — no sign-up required.
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