11 encoders across 9 categories

Free Online Encoding Tools

Encode and decode Base64, URL percent-encoding, HTML entities, classical ciphers and network protocol formats. Fast, free and entirely in your browser.

Classical Ciphers

Historic and educational ciphers

Morse Code

Encode or decode messages using Morse code, a telecommunication system that represents letters, numbers, and punctuation using dots and dashes.

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Base64

Base64 encode and decode

Base64

Quickly encode and decode Base64 text, files, and images online.

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Base Encodings

Base32, Base58 and Ascii85

Base32 / Base58 / Ascii85

Encode and decode Base32, Base58 and Ascii85 online.

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Base45 / Base62 / Z85 / Base91

Encode and decode Base45, Base62, Z85 and Base91. Runs offline.

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URL

Percent-encoding for URLs

URL Encode/Decode

Easily encode and decode URLs online with support for multiple encoding levels.

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HTML

HTML entity encode and decode

HTML Encode/Decode

Easily encode and decode HTML special characters online with support for multiple levels.

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Other

Foxmail

Decode Foxmail passwords easily.

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Network Protocols

Protocol-level encodings

DNS Wire Encode/Decode

Analyze DNS packets by decoding raw wire format (RFC 1035) into readable query and response data including records like A, AAAA, MX, TXT, CNAME, and more.

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Compression

Gzip, zlib and deflate

Gzip / Zlib / Deflate

Compress and decompress gzip, zlib and deflate. Runs offline.

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Serialization

CBOR and MessagePack binary formats

CBOR Encoder / Decoder

Encode and decode CBOR (binary JSON). Runs offline.

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MessagePack Encoder / Decoder

Encode and decode MessagePack (binary JSON). Runs offline.

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