Character Frequency Analyzer
Count character, letter and word frequencies for text analysis
Text
About
Analyze the character, letter, and word composition of a text. Shows summary counts (characters, words, lines, letters, digits, whitespace), the most frequent characters, and an a–z letter frequency breakdown useful for cryptography and linguistics. Everything runs in your browser; nothing is uploaded.
Related guides
Caesar Ciphers, ROT13, and Why Neither Is Encryption
What a shift cipher is, why ROT13 is self-inverse and useful for light obfuscation, and how frequency analysis breaks even large keys efficiently.
Letter Frequency Analysis: How Frequency Stats Crack Substitution Ciphers
What the letter distribution in English looks like, how to use it to break a Caesar cipher, and what word and line stats reveal that individual letters miss.
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