Cipher & Encoding Tools Collection

Ancient Hebrew letter reversal cipher

Letter shifting cipher used by Julius Caesar

Polyalphabetic substitution cipher

Transposition cipher using zigzag pattern

5×5 grid substitution cipher

Binary encoding using two symbols

Mathematical substitution cipher

Matrix-based polygraphic cipher

Digraph substitution cipher

Four 5×5 matrix polygraphic cipher

Reciprocal Vigenère cipher variant

Self-synchronizing stream cipher

One-to-many substitution cipher

Binary to text encoding scheme

Percent-encoding for URLs

Convert special characters to HTML entities

Convert between Unicode formats

Internationalized domain names encoding

Convert between number systems

Text to ASCII codes conversion

Simple letter and character rotation

Unix-to-Unix encoding

MIME encoding for email

Binary encoding for Usenet

Dots and dashes telegraph code

Tactile writing system converter

ASL fingerspelling alphabet

International Phonetic Alphabet

Chinese romanization system

Traditional/Simplified Chinese

Upper/lower/title case conversion

Reverse text and words

Create mirrored text effect

Convert to vertical writing

Text to emoji conversion

Format, validate and analyze JSON data

Universal code using Fibonacci numbers

Binary numeral system variant

Error detection and correction

Cyclic error-correcting codes

Error correction for data transmission

Cyclic redundancy check

Simple error detection

Measure difference between strings

128-bit hash function

SHA-1/256/512 hash functions

Checksum algorithms

Fast checksum algorithm

Keyed-hash message authentication

Password hashing function

Modern password hashing

Verify file integrity