CodExt is a (Python2-3 compatible) library that extends the native codecs library (namely for adding new custom encodings and character mappings) and provides 120+ new codecs, hence its name combining CODecs EXTension. It also features a guess mode for decoding multiple layers of encoding and CLI tools for convenience.

$ pip install codext

$ codext -i test.txt encode dna-1 GTGAGCGGGTATGTGA $ echo -en "test" | codext encode morse - . ... - $ echo -en "test" | codext encode braille ⠞⠑⠎⠞ $ echo -en "test" | codext encode base100 👫👜👪👫 

$ echo -en "Test string"| codext encode reverse gnirts tseT $ echo -en "Test string"| codext encode reverse morse --. -. .. .-. - ... / - ... . - $ echo -en "Test string"| codext encode reverse morse dna-2 AGTCAGTCAGTGAGAAAGTCAGTGAGAAAGTGAGTGAGAAAGTGAGTCAGTGAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTTAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTGAGAAAGTC $ echo -en "Test string"| codext encode reverse morse dna-2 octal 101107124103101107124103101107124107101107101101101107124103101107124107101107101101101107124107101107124107101107101101101107124107101107124103101107124107101107101101101107124103101107101101101107124107101107124107101107124107101107101101101107124124101107101101101107124103101107101101101107124107101107124107101107124107101107101101101107124107101107101101101107124103 $ echo -en "AGTCAGTCAGTGAGAAAGTCAGTGAGAAAGTGAGTGAGAAAGTGAGTCAGTGAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTTAGAAAGTCAGAAAGTGAGTGAGTGAGAAAGTGAGAAAGTC"| codext -d dna-2 morse reverse test string

$ codext add-macro my-encoding-chain gzip base63 lzma base64 $ codext list macros example-macro, my-encoding-chain $ echo -en "Test string"| codext encode my-encoding-chain CQQFAF0AAIAAABuTgySPa7WaZC5Sunt6FS0ko71BdrYE8zHqg91qaqadZIR2LafUzpeYDBalvE///ug4AA== $ codext remove-macro my-encoding-chain $ codext list macros example-macro

$ echo "Test string !" | base122 *.7!ft9�-f9Â $ echo "Test string !" | base91 "ONK;WDZM%Z%xE7L $ echo "Test string !" | base91 | base85 B2P|BJ6A+nO(j|-cttl% $ echo "Test string !" | base91 | base85 | base36 | base58-flickr QVx5tvgjvCAkXaMSuKoQmCnjeCV1YyyR3WErUUErFf $ echo "Test string !" | base91 | base85 | base36 | base58-flickr | base58-flickr -d | base36 -d | base85 -d | base91 -d Test string ! 

$ echo "Test string !" | base91 | base85 | base36 | base58-flickr | unbase -m 3 Test string ! $ echo "Test string !" | base91 | base85 | base36 | base58-flickr | unbase -f Test Test string ! 

Getting the list of available codecs:

>>>importcodext>>>codext.list() ['ascii85', 'base85', 'base100', 'base122', ..., 'tomtom', 'dna', 'html', 'markdown', 'url', 'resistor', 'sms', 'whitespace', 'whitespace-after-before'] >>>codext.encode("this is a test", "base58-bitcoin") 'jo91waLQA1NNeBmZKUF'>>>codext.encode("this is a test", "base58-ripple") 'jo9rA2LQwr44eBmZK7E'>>>codext.encode("this is a test", "base58-url") 'JN91Wzkpa1nnDbLyjtf'>>>codecs.encode("this is a test", "base100") '👫👟👠👪🐗👠👪🐗👘🐗👫👜👪👫'>>>codecs.decode("👫👟👠👪🐗👠👪🐗👘🐗👫👜👪👫", "base100") 'this is a test'>>>foriinrange(8): print(codext.encode("this is a test", "dna-%d"% (i+1))) GTGAGCCAGCCGGTATACAAGCCGGTATACAAGCAGACAAGTGAGCGGGTATGTGACTCACGGACGGCCTATAGAACGGCCTATAGAACGACAGAACTCACGCCCTATCTCAACAGATTGATTAACGCGTGGATTAACGCGTGGATGAGTGGACAGATAAACGCACAGAGACATTCATTAAGCGCTCCATTAAGCGCTCCATCACTCCAGACATAAAGCGAGACTCTGTAAGTAATTCGCGAGGTAATTCGCGAGGTAGTGAGGTCTGTATTTCGCTCTGTGTCTAACTAATTGCGCACCTAATTGCGCACCTACTCACCTGTCTATTTGCGTGTCGAGTGCCTGCCGGATATCTTGCCGGATATCTTGCTGTCTTGAGTGCGGGATAGAGTCACTCGGTCGGCCATATGTTCGGCCATATGTTCGTCTGTTCACTCGCCCATACACT>>>codext.decode("GTGAGCCAGCCGGTATACAAGCCGGTATACAAGCAGACAAGTGAGCGGGTATGTGA", "dna-1") 'this is a test'>>>codecs.encode("this is a test", "morse") '- .... .. ... / .. ... / .- / - . ... -'>>>codecs.decode("- .... .. ... / .. ... / .- / - . ... -", "morse") 'this is a test'>>>withopen("morse.txt", 'w', encoding="morse") asf: f.write("this is a test") 14>>>withopen("morse.txt",encoding="morse") asf: f.read() 'this is a test'>>>codext.decode(""" =  X  :  x  n  r  y  Y  y  p  a  `  n  |  a o  h  `  g  o  z """, "whitespace-after+before") 'CSC{not_so_invisible}'>>>print(codext.encode("An example test string", "baudot-tape")) ***.** . ****.** . .** .* . *** .****.**** .** .** . **. * .***. **. ** . **. **. ****. *.****.** .*

• base1: useless, but for the sake of completeness
• base2: simple conversion to binary (with a variant with a reversed alphabet)
• base3: conversion to ternary (with a variant with a reversed alphabet)
• base4: conversion to quarternary (with a variant with a reversed alphabet)
• base8: simple conversion to octal (with a variant with a reversed alphabet)
• base10: simple conversion to decimal
• base11: conversion to digits with a "a"
• base16: simple conversion to hexadecimal (with a variant holding an alphabet with digits and letters inverted)
• base26: conversion to alphabet letters
• base32: classical conversion according to the RFC4648 with all its variants (zbase32, extended hexadecimal, geohash, Crockford)
• base36: Base36 conversion to letters and digits (with a variant inverting both groups)
• base45: Base45 DRAFT algorithm (with a variant inverting letters and digits)
• base58: multiple versions of Base58 (bitcoin, flickr, ripple)
• base62: Base62 conversion to lower- and uppercase letters and digits (with a variant with letters and digits inverted)
• base63: similar to base62 with the "_" added
• base64: classical conversion according to RFC4648 with its variant URL (or file) (it also holds a variant with letters and digits inverted)
• base67: custom conversion using some more special characters (also with a variant with letters and digits inverted)
• base85: all variants of Base85 (Ascii85, z85, Adobe, (x)btoa, RFC1924, XML)
• base91: Base91 custom conversion
• base100 (or emoji): Base100 custom conversion
• base122: Base100 custom conversion
• base-genericN: see base encodings ; supports any possible base

This category also contains ascii85, adobe, [x]btoa, zeromq with the base85 codec.

• baudot: supports CCITT-1, CCITT-2, EU/FR, ITA1, ITA2, MTK-2 (Python3 only), UK, ...
• baudot-spaced: variant of baudot ; groups of 5 bits are whitespace-separated
• baudot-tape: variant of baudot ; outputs a string that looks like a perforated tape
• bcd: Binary Coded Decimal, encodes characters from their (zero-left-padded) ordinals
• bcd-extended0: variant of bcd ; encodes characters from their (zero-left-padded) ordinals using prefix bits 0000
• bcd-extended1: variant of bcd ; encodes characters from their (zero-left-padded) ordinals using prefix bits 1111
• excess3: uses Excess-3 (aka Stibitz code) binary encoding to convert characters from their ordinals
• gray: aka reflected binary code
• manchester: XORes each bit of the input with 01
• manchester-inverted: variant of manchester ; XORes each bit of the input with 10
• rotateN: rotates characters by the specified number of bits (N belongs to [1, 7] ; Python 3 only)

• a1z26: keeps words whitespace-separated and uses a custom character separator
• cases: set of case-related encodings (including camel-, kebab-, lower-, pascal-, upper-, snake- and swap-case, slugify, capitalize, title)
• dummy: set of simple encodings (including integer, replace, reverse, word-reverse, substite and strip-spaces)
• octal: dummy octal conversion (converts to 3-digits groups)
• octal-spaced: variant of octal ; dummy octal conversion, handling whitespace separators
• ordinal: dummy character ordinals conversion (converts to 3-digits groups)
• ordinal-spaced: variant of ordinal ; dummy character ordinals conversion, handling whitespace separators

• gzip: standard Gzip compression/decompression
• lz77: compresses the given data with the algorithm of Lempel and Ziv of 1977
• lz78: compresses the given data with the algorithm of Lempel and Ziv of 1978
• pkzip_deflate: standard Zip-deflate compression/decompression
• pkzip_bzip2: standard BZip2 compression/decompression
• pkzip_lzma: standard LZMA compression/decompression

⚠️ Compression functions are of course definitely NOT encoding functions ; they are implemented for leveraging the .encode(...) API from codecs.

• affine: aka Affine Cipher
• atbash: aka Atbash Cipher
• bacon: aka Baconian Cipher
• barbie-N: aka Barbie Typewriter (N belongs to [1, 4])
• citrix: aka Citrix CTX1 password encoding
• railfence: aka Rail Fence Cipher
• rotN: aka Caesar cipher (N belongs to [1,25])
• scytaleN: encrypts using the number of letters on the rod (N belongs to [1,[)
• shiftN: shift ordinals (N belongs to [1,255])
• xorN: XOR with a single byte (N belongs to [1,255])

⚠️ Crypto functions are of course definitely NOT encoding functions ; they are implemented for leveraging the .encode(...) API from codecs.

• blake: includes BLAKE2b and BLAKE2s (Python 3 only ; relies on hashlib)
• checksums: includes Adler32 and CRC32 (relies on zlib)
• crypt: Unix's crypt hash for passwords (Python 3 and Unix only ; relies on crypt)
• md: aka Message Digest ; includes MD4 and MD5 (relies on hashlib)
• sha: aka Secure Hash Algorithms ; includes SHA1, 224, 256, 384, 512 (Python2/3) but also SHA3-224, -256, -384 and -512 (Python 3 only ; relies on hashlib)
• shake: aka SHAKE hashing (Python 3 only ; relies on hashlib)

⚠️ Hash functions are of course definitely NOT encoding functions ; they are implemented for convenience with the .encode(...) API from codecs and useful for chaning codecs.

• braille: well-known braille language (Python 3 only)
• ipsum: aka lorem ipsum
• galactic: aka galactic alphabet or Minecraft enchantment language (Python 3 only)
• leetspeak: based on minimalistic elite speaking rules
• morse: uses whitespace as a separator
• navajo: only handles letters (not full words from the Navajo dictionary)
• radio: aka NATO or radio phonetic alphabet
• southpark: converts letters to Kenny's language from Southpark (whitespace is also handled)
• southpark-icase: case insensitive variant of southpark
• tap: converts text to tap/knock code, commonly used by prisoners
• tomtom: similar to morse, using slashes and backslashes

• dna: implements the 8 rules of DNA sequences (N belongs to [1,8])
• letter-indices: encodes consonants and/or vowels with their corresponding indices
• markdown: unidirectional encoding from Markdown to HTML

• hexagram: uses Base64 and encodes the result to a charset of I Ching hexagrams (as implemented here)
• klopf: aka Klopf code ; Polybius square with trivial alphabetical distribution
• resistor: aka resistor color codes
• rick: aka Rick cipher (in reference to Rick Astley's song "Never gonna give you up")
• sms: also called T9 code ; uses "-" as a separator for encoding, "-" or "_" or whitespace for decoding
• whitespace: replaces bits with whitespaces and tabs
• whitespace_after_before: variant of whitespace ; encodes characters as new characters with whitespaces before and after according to an equation described in the codec name (e.g. "whitespace+2*after-3*before")

• html: implements entities according to this reference
• url: aka URL encoding