Base64 Decode
Decode Base64 back to readable text instantly, with full Unicode support. Everything runs in your browser; nothing is uploaded.
- 🔒 100% private — no uploads
- 🆓 Free, no watermark
- 📱 Works on any device
How to decode
- 1
Paste your Base64
Type directly or paste your text into the box. It’s processed right in your browser — nothing is uploaded to a server.
- 2
See the result instantly
The tool updates live as you type, showing the decoded text with no “submit” button or waiting.
- 3
Copy or keep going
Copy the result with one click, tweak your input, or clear it and start again. Free, instant and private.
Why use Base64 Decode?
Unicode-safe
Decodes the bytes as UTF-8, so emoji and non-Latin text come back correctly.
Clear errors
Invalid Base64 shows an error instead of garbage, so you know the input was malformed.
100% private
Everything runs locally in your browser with JavaScript. Your text is never uploaded, stored or seen by anyone — it even works offline.
Works on any device
No install and no account. Runs in any modern browser on Windows, macOS, Linux, Android or iPhone.
Spotting Base64 in the wild
Base64 has a recognizable shape: long runs of letters and digits with the occasional + or /, often ending in one or two = signs. You’ll meet it in JWT segments (each part between the dots), data: URIs, email source, config files and API payloads. If a mystery string looks like that, decoding it here is the fastest way to find out what it says.
Decoding is not decrypting
Base64 is a reversible encoding with no key and no secret — decoding it is expected, not an attack. The flip side matters too: if you find credentials or personal data “protected” only by Base64, they’re effectively in plain text. Real secrecy needs encryption; Base64 just makes bytes safe to paste.
Frequently asked questions
What if my Base64 is invalid?
The tool shows a decoding error rather than producing nonsense, so you can fix or re-copy the input.
Is my text uploaded to a server?
No. The tool runs entirely in your browser, so whatever you type or paste stays on your device. It’s safe for code, tokens and confidential text, and works offline once loaded.