CSS Word-Break Checker is a free Chrome extension developed by mitsuruog. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This extension is designed to assist web developers in identifying incorrect word breaks on web pages.

The main feature of CSS Word-Break Checker is its ability to replace the text on a web page with defined characters, making it easier to spot where word breaks are incorrect. By doing so, developers can quickly identify areas where words are not breaking as intended. This is particularly useful for ensuring proper readability and formatting in different languages and layouts.

Furthermore, CSS Word-Break Checker offers customizable settings through its options screen. Users can choose the character to replace the text with, as well as specify elements to exclude from the replacement. This flexibility allows developers to tailor the extension to their specific needs and preferences.

Overall, CSS Word-Break Checker is a valuable tool for web developers, providing a simple yet effective way to identify and correct word break issues on web pages.