Ready.
Encoding utility
Base64 Encoder and Decoder
Turn readable text into Base64 or decode Base64 text back into UTF-8 for configuration snippets, simple data transport, and debugging encoded values.
Where Base64 appears
You may see Base64 in API examples, basic authorization headers, small embedded assets, certificates, and configuration values.
Size tradeoff
Base64 usually makes data larger. It is useful for transport compatibility, not for compression.
Not for secrets
If an encoded value contains a password or token, treat it as sensitive. Encoding does not hide the underlying data.
Base64 FAQ
Why does decoding fail?
The input may include invalid characters, missing padding, or content that is not Base64. Copy only the encoded value and try again.
Can I encode files here?
This page focuses on text. Large files are better handled by local developer tools that can stream data efficiently.
Is Base64 safe for URLs?
Standard Base64 can include plus and slash characters. Some systems use Base64URL variants for URL-safe values.