JMCleaner is a free Chrome extension developed by xyr0n. It falls under the category of Browsers and is specifically classified as an Add-ons & Tools subcategory. This extension is designed to hide unwanted comments on the JoeMonster website.

With JMCleaner, users can automatically hide comments from disliked users and even give them a thumbs-down rating. The extension comes with a built-in feature that allows users to view statistics on blocked comments. Additionally, it offers the option to hide replies to blocked comments.

The latest version, 1.7, includes a change in the appearance of the popup window. Previous updates, such as version 1.6, have taken into account changes on the JM website. Version 1.5 introduced the display of blocked comment statistics and the ability to hide replies to blocked comments. Version 1.4 brought features like the ability to disable the extension, customize the frame appearance for hidden comments, and remove the username from the input field after successfully adding a user.

JMCleaner also allows users to check if a user exists, add users by submitting a form, replace the content of a comment, and modify the appearance of the main panel.