Word Counter Count words, unique words, characters, and see word frequency in any text.

Word counting works by splitting text on whitespace boundaries using the regular expression /\s+/ and filtering out empty strings. This approach correctly handles multiple spaces, tabs, and newlines between words. Character counting includes all characters (letters, numbers, spaces, punctuation). Unique word counting normalizes words to lowercase before adding to a Set data structure, which automatically handles deduplication. The frequency analysis uses a hash map to tally occurrences of each lowercase word, then sorts by count descending and displays the top five most common words. Average word length is calculated by summing the character count of all words and dividing by the total word count. Edge cases handled include empty input (returns zero for all metrics), text with only whitespace, and text with special characters or Unicode. The tool processes text in real-time as you type, using memoization to avoid unnecessary recalculations.