Character Frequency Visualizer

Paste any text to see a horizontal bar chart of the top 20 most frequent characters. Toggle letters-only mode. Useful for frequency analysis on ciphers, language detection, and text analytics. Free, no signup.

Character frequency analysis is a classical cryptanalysis technique — in English, 'e' is the most common letter (~12.7%), making it the first target when breaking substitution ciphers. This tool also helps identify the language of a text, detect repeated patterns, and understand the structure of encoded data.