Base64 & Encoder
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Base64
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Hex
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URL Encoded
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HTML Entities
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Decode format
Decoded Output
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SHA-256
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SHA-1
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MD5 (not cryptographic)
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⚠️ Hashes are one-way. SHA-256 is cryptographically secure. MD5 and SHA-1 are broken for security, only use them for checksums/legacy compatibility.
// quick reference
Base64, encodes binary data as ASCII. Used in HTTP basic auth, JWTs, email attachments, and API keys.
Hex, each byte as two hex digits (0-9, a-f). Used in network protocols, cryptography, and colour codes.
URL encoding, replaces unsafe characters with %XX. Required in query strings and form data.
SHA-256, produces a 256-bit fingerprint of any input. Used for password hashing, file integrity, digital signatures.