Convert text to and from Base64 instantly in your browser, with full Unicode support.
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- Runs entirely in your browser — your text is never sent to a server
- Full Unicode support — emoji and accented characters round-trip correctly
- Free, no account required
How it works
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1
Paste the text, code, or token you want to encode or decode.
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2
Conversion happens instantly as you type.
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3
Review the result, including any decoded structure.
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4
Copy the result to your clipboard.
Why use this tool
Every dev utility, one place
Format, convert, encode, decode, and generate — no more juggling ten tabs.
100% private, always
Every tool runs in your browser — your code and data are never sent anywhere.
Works on any device
Runs on Windows, Mac, Linux, iOS, and Android — nothing to install.
Instant results
No queues, no build step — results update as you type.
Built to handle real data
Full Unicode support and RFC-compliant parsing, edge cases included.
Free, always
Free to use, with no rate limits, sign-up, or trial period.
Frequently asked questions
This utility is specifically optimized for encoding and decoding plain text strings rather than raw file buffers.
Yes, text is carefully UTF-8 encoded before conversion, ensuring that special characters round-trip flawlessly.
It generates standard Base64 containing plus and slash characters; it does not replace them for URL safety.
The decoder simply strips out spaces and illegal characters before attempting to interpret the remaining string.
If the original data was a compiled file or an image instead of text, rendering it as text will look like random characters.
From the blog
Reading a JWT Without Trusting It: Claims, Expiry, and the Signature Trap
Decoding a JWT takes a second. Verifying one is a different job entirely — and confusing the two is how auth bugs ship. Here is how to read a token safely while you debug.
Mastering Base64: What It Is, How It Works, and When Not to Use It
Base64 is everywhere in modern web development, from data URIs to authentication headers. Here is a deep dive into how it works and common pitfalls to avoid.
Demystifying JSON: How to Troubleshoot Common Parsing Errors
JSON is the backbone of web APIs, but syntax mistakes can halt your code. Here is how to identify and fix missing commas, unescaped strings, and trailing characters.
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