Base64 Decoder
Decode Base64 strings back to plain text. — free, fast and private.
How to use Base64 Decoder
- Paste the Base64 string into the box.
- Click Decode Base64.
- Copy the decoded plain text or download it.
Note: this tool runs in your browser. Nothing is uploaded.
Frequently Asked Questions
What does the Base64 Decoder do?
It converts a Base64 string back into the original plain text, including UTF-8 characters such as Urdu and emoji.
Why do I get an invalid Base64 error?
The string may have a typo, missing = padding at the end, or characters outside the Base64 alphabet. Paste the full string exactly as given.
Is my data uploaded to a server?
No. This tool runs entirely in your browser and your input is never uploaded to a server.
Can I use this tool on my phone?
Yes, the tool is fully mobile-friendly and works in any modern browser.