base64.questCompare Base64 Encodings
This tool demonstrates how different Base64 variants encode the same input. The highlighted characters show the critical differences: Standard uses + and /, while URL-Safe uses - and _ to prevent conflicts in URLs or filenames.
Standard (RFC 4648)
Size: 48 bytes • Ratio: 1.37
PC8+ID8gIlVSTCB1bnNhZmUgY2hhcmFjdGVycyIgPyA8Lz4=
URL & Filename Safe (RFC 4648 §5)
Size: 48 bytes • Ratio: 1.37
PC8-ID8gIlVSTCB1bnNhZmUgY2hhcmFjdGVycyIgPyA8Lz4=
How to Read the Diff: The "Standard" encoding is the baseline. In the "URL & Filename Safe" card, any character that differs from the Standard version is highlighted. This visually confirms the substitution of unsafe characters.
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