Base64 Decoder
Decode Base64 into UTF-8 text and reject values with bad characters or padding.
Tool
Output
Output appears here.Your data stays in this browser and is not uploaded.
How it works
- 1
Paste a Base64 value.
- 2
Decode it.
- 3
Copy the UTF-8 text or download it.
Related tools
Questions
What is Base64 used for?
It represents bytes as ASCII text so they can travel through systems that expect text, such as JSON or email.
Can Base64 contain binary data?
Yes. This decoder expects the result to be UTF-8 text. Binary that is not UTF-8 is rejected.