Base64 Decoder
Turn a Base64 string back into readable text. Line breaks and stray spaces are ignored, and invalid input is flagged clearly.
How to Use the Base64 Decoder
- 1
Paste the Base64 string on the left.
- 2
Read the decoded text on the right.
- 3
Copy the result.
- 4
Encode text again with the Base64 Encoder.
Base64 Decoder Features
Forgiving input
Line breaks and spaces inside the string are ignored.
Clear errors
You are told when the string is not valid Base64.
Unicode output
Accents and emoji come back exactly as they went in.
Runs in your browser
Nothing is uploaded to a server, so your content stays on your device.
Free and unlimited
No account, no watermark and no daily limit.
Works on mobile
Large tap targets and layouts that fit a phone screen.