LFWidthChecker is a free Chrome extension developed by leofanini in the category of Browsers and subcategory of Add-ons & Tools. This extension is designed to analyze webpage widths and identify nested HTML elements that are larger than their parent nodes.

Created to assist in updating websites to be mobile-friendly, LFWidthChecker helps users find the tag responsible for overflowing structures. By installing the extension, users gain access to a tab panel in the Chrome Developer Tools and a browser action button.

To utilize LFWidthChecker, users need to open the extension's tab in the developer tools and then click on the browser action button to install the code on their webpage. The extension then analyzes the webpage, comparing the widths of nested elements with the widths defined in the raw CSS.

After the initial analysis, users have the option to set a limit width and run the script again. The extension loads the CSS rules for "width" and "min-width" and compares them with the widths from the DOM.

LFWidthChecker is a helpful tool for web developers and designers looking to ensure their websites are visually appealing and properly optimized for mobile devices. If you encounter any issues or have suggestions, feel free to reach out to the developer.