What is Base64 character encoding detection?
This tool decodes Base64 bytes and checks whether they look like ASCII, UTF-8, UTF-16 with a byte order mark, or binary data. It helps you choose the right decoder view.
How to use it
- Paste the Base64 string.
- Review the likely encoding and decoded byte size.
- Use the suggested decoder for a more specific view.
Example
Input: SGVsbG8sIHdvcmxkIQ==
Output: likely encoding ASCII
Common mistakes
- Encoding detection is a best-effort clue, not a guarantee.
- Short payloads may not contain enough bytes to identify reliably.
- Binary files can contain byte sequences that look like text.
Related tools
- Decode UTF-8 with Base64 to text.
- Decode printable bytes with Base64 to ASCII.
- Inspect bytes with Base64 to hex.
Privacy and security
The byte inspection runs locally in your browser.