Base64 Decoder
An unreadable string in an API log is confusing. This tool converts Base64 text back into readable content entirely in your browser. Avoid decoding unknown production tokens; verify the source first.
Step by step
- Copy the Base64 string and remove spaces.
- Paste it into the input box as one piece.
- Click Decode and read the output.
- Verify it matches the expected format.
- Compare with the test environment record if needed.
Example scenario
Pasting an encoded value from a support ticket yields plain JSON. You learn the issue comes from permissions. Never paste real production tokens; work with samples.
Check your result
Confirm readability and expected structure. For missing padding, add equals signs. If output shows a password, delete it at once.
Frequently asked questions
Invalid character errors?
Usually spaces or line breaks; join into one line.
Gibberish output?
The source may use another encoding.
Decode JWT parts?
Yes, paste the middle section separately.
Creates files?
No, text output only.
Open the tool: Base64 Decoder →
Keep an original copy before processing your file. Examples are illustrative; results depend on your document.