Practical guide
How to use the base64 converter
The Base64 converter encodes binary-safe text into an ASCII representation or decodes Base64 back to its original bytes. It is a transport encoding, not encryption or access control.
Good reasons to use it
- Inspect a non-secret Base64 value from an API or data URI.
- Encode a short test payload for a compatible protocol.
- Confirm whether two systems interpret the same character encoding.
A reliable workflow
- Choose encode or decode.
- Paste a non-sensitive value and generate the result.
- Confirm the expected character set and padding with the receiving system.
How to interpret the result
Base64 output is larger than the original and anyone can decode it. Different variants may use URL-safe characters or omit padding, so protocol details matter.
Frequently asked questions
Is Base64 secure?
No. It is easily reversible encoding and provides no confidentiality.
Why does the decoded text look corrupted?
The original may be binary data, use another character encoding or follow a URL-safe Base64 variant.