Quick start
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Input text or Base64
Chinese, emoji, and special characters are supported.
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Choose encode or decode
Results are generated instantly.
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Copy result
Copy output for API requests or configs.
Base64 Encoder/Decoder
Useful for API payload debugging, credential checks, and text transport prep.
Privacy: processed locally, never uploaded.
↓ Paste in the input area below to see results instantly
Enter text or Base64 here
UTF-8 text supported. Choose encode or decode to see the result.
Useful for API payload debugging, credential checks, and text transport prep.
Base64 is not encryption
Base64 is encoding, not security. Anyone can decode it back.
Common use cases
Base64 appears in Authorization headers, Data URLs, and email payloads.
Examples
Encode example
Input
hello
Output
aGVsbG8=
Decode example
Input
5L2g5aW9
Output
你好
FAQ
Why decode throws error?
Input may be invalid Base64 or truncated.
Does it support UTF-8?
Yes, UTF-8 strings including CJK and emoji are supported.