01 / Fast steps
- Paste the Base64 string.
- The decoded text appears as you type.
- Copy the result or download it as a file.
Base64 Decode
Decode Base64 text back into readable content.
Updates instantly as you type
02 / Best for
- Inspect Base64 values found in API responses and logs.
- Read encoded config entries and environment variables.
- Check what an encoded payload actually contains before using it.
03 / Why here
- Live decoding with instant feedback on invalid input.
- Runs entirely in your browser, so encoded secrets never leave your device.
04 / Keep in mind
- Only valid Base64 can be decoded; corrupted or truncated strings will be rejected.
- Binary payloads may decode to unreadable characters, since the output is shown as text.
Tool connections
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Good to know
Questions & answers
01Is my data sent to a server?
No. Decoding happens locally in your browser, so the encoded values and their decoded content never leave your device.
02Why does my string fail to decode?
The input is probably not valid Base64: check for missing padding, line breaks in the middle, or URL-safe variants that use - and _ instead of + and /.
03Is Base64 Decode free to use?
Yes, Base64 Decode is completely free, with no sign-up and no usage limits. It runs entirely in your browser, so your data never leaves your device.