Decode Base64 to Unicode
Convert base64 data to Unicode text. Runs entirely in your browser, so your data never leaves your device.
0 chars · 0 lines
Output
The result appears here as you type.
How to use Decode Base64 to Unicode
- 1. Paste the base64 string. Paste the base64 string you want decoded back to text, such as a value copied from an API response, a config file, or a data URI.
- 2. See the bytes interpreted as UTF-8. The tool reverses the base64 alphabet back into raw bytes, then interprets those bytes as UTF-8 to reconstruct the original Unicode text, including any accented letters or symbols.
- 3. Copy the decoded text. Copy the decoded text and use it to read a payload, verify a token's contents, or confirm what a base64 value in a request or config actually represents.
When to use Decode Base64 to Unicode
Decode Base64 to Unicode reverses a base64 string back into readable text, handling the UTF-8 interpretation so accented letters and non-Latin characters come out correctly rather than as broken bytes. It is the everyday counterpart to encoding text for ASCII-only transport.
- Reading a base64 field in a network request. You spotted a base64-encoded value in a browser's network tab or an API log and want to know what plaintext it actually represents before trusting or forwarding the payload.
- Inspecting a JWT payload. A JSON Web Token has a base64-encoded payload segment, and decoding it here reveals the claims inside without needing a dedicated JWT debugging tool.
- Recovering a config value. A configuration file stores a setting as base64 to avoid escaping issues, and decoding it confirms the actual text value before you edit or reuse it elsewhere.
- Checking a suspicious email attachment header. An email header or MIME part shows a base64-encoded string, and decoding it here confirms what content it actually contains before deciding whether it looks legitimate.
Examples
ASCII
Input
QUI=
Output
AB
Unicode
Input
Y2Fmw6k=
Output
café
About the Decode Base64 to Unicode tool
Decode Base64 to Unicode runs as plain JavaScript in your browser tab, with no server behind it. Convert base64 data to Unicode text. Whatever you put in stays on your device from start to finish.
The tool is part of EditSafely's Unicode Tools section, 98 single-purpose utilities built around the same idea: open the page, get the result, keep your data to yourself.
There is nothing to configure. Provide the input and the result appears on its own. 2 worked examples further down the page show exactly what the tool produces for real inputs.
That local-first design has practical benefits beyond privacy. The tool keeps working on a flaky connection once the page has loaded, results are instant because nothing round-trips to a server, and it is safe to use with confidential material.
Frequently asked questions
Is Decode Base64 to Unicode free to use?
Yes, it is completely free. All 2,658 tools on EditSafely work without an account, a subscription or usage limits.
Is it safe to paste sensitive or confidential data?
Everything happens locally. Your browser downloads the tool's code once, then does all the processing itself; nothing you enter is transmitted, stored or logged. You can even go offline after the page loads and it will still work.
How much text can I process at once?
There is no fixed limit. Because the work happens on your own device rather than on a shared server, the practical ceiling is your machine's memory, which comfortably handles inputs far larger than typical online tools allow.
Do I need to sign up or install anything?
No. The tool works in any modern browser on desktop, tablet or phone. There is no account to create, no extension to add and no software to install.
How do I use the result?
The output panel has a one-click copy button, and you can keep refining the input while you work; the result updates in place as you type.