mei's lens is a free Chrome add-on developed by Paul Li. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This add-on provides a convenient "search the web by image" feature for web pages.

With mei's lens, users can easily search the web using an image. The add-on allows users to pick and select an image to initiate the search. Additionally, it offers a light and dark mode for users to customize their experience.

To use mei's lens, simply turn it on through the context menu or the browser bar icon. The add-on will automatically apply the image once the user taps the image context menu. For first-time usage, mei's lens requires a Google account login, but this is only for recording request count.

Users can also switch the main image source in multiple ways. They can drag and drop an image file or a web page element into the main image section. Alternatively, they can paste a URL, image, or HTML string onto the main image section. Another option is to double click the main image section to manually select an image.

mei's lens offers keyboard shortcuts for easy navigation. Pressing "ctrl" + "shift" + "L" toggles the add-on, while pressing "esc" turns it off.

For additional assistance, users can refer to the tutorial video on YouTube for a step-by-step guide on how to use mei's lens. There is also a video explaining how to switch the image source.

Overall, mei's lens is a useful Chrome add-on that enhances the browsing experience by allowing users to search the web using images. It offers various features and customization options to cater to individual preferences.

Enjoy the convenience and efficiency of mei's lens for your web image searches.