This word counter, character counter & syllable counter online tool is the web version of the popular Firefox and Chrome extensions. This handy word counting tool runs in all popular web browsers such as Firefox, Chrome, Opera, Safari, Internet Explorer. Description: Calculate and display the number of characters within a TEXTAREA with this script. Useful, for example, in helping your visitors manually keep their input length in check! Useful, for example, in helping your visitors manually keep their input length in check! Embed the character count tool in your web page to count the number of characters.