What this tool does
Convert UTF-8 text to Base64 and decode valid Base64 strings locally. Base64 is an encoding format, not encryption, so encoded content should never be treated as secret.
Base64 is commonly used when binary or text data needs to travel through systems designed for text. Because anyone can decode it, it provides no confidentiality. Use real encryption and proper key management for sensitive information.
Useful for
- Inspect Base64 values found in development workflows.
- Encode small text snippets for testing.
- Decode data URIs or configuration values when the content is known to be safe text.
How to use it
- Choose Encode or Decode.
- Paste the input text or Base64 string.
- Run the conversion and review the output.
- Copy the result only if it matches your expected format.
Practical tips
- Never mistake Base64 for encryption.
- Binary files may not decode into readable text.
- Avoid pasting authentication tokens into utilities unless you fully understand the exposure risk.
- This implementation processes data locally.
Frequently asked questions
Is Base64 secure?
No. Base64 is reversible encoding and provides no secrecy.
Why do I sometimes see = at the end?
Padding characters can be added so the encoded length fits Base64 grouping rules.
Can it encode Unicode text?
Yes. The tool converts browser text through UTF-8 before Base64 encoding.