45to75 is a free Chrome add-on developed by abbwebdev. It falls under the category of Browsers and is specifically listed under the subcategory of Add-ons & Tools. This add-on is designed to help designers and developers ensure that text line lengths meet their standards.

The main purpose of 45to75 is to provide a character counter that helps optimize line length between 45 and 75 characters. It offers a simple and convenient way to measure the length of highlighted text. By right-clicking on the selected text, users can view the character count directly in the tooltip.

With 45to75, authors can easily determine if their text line lengths fall within the recommended range of 45 to 75 characters. This ensures that the text remains readable across different situations and layouts, enhancing the overall readability and user experience.