CheerpJ JNLP Runner allows users to execute Java Web Start applications directly in Chrome without the need for a local Java Desktop installation. This browser extension, powered by CheerpJ technology, aims to seamlessly run JNLP files within the browser environment, eliminating the necessity of Java on the desktop.

JNLP files, XML files facilitating the execution of legacy Java Applications over networks, can be effortlessly launched using this extension. Upon installation, users can simply visit the hosting website of the JNLP file, where the extension will automatically activate. By agreeing to the license terms and selecting 'Start Application,' users can swiftly run Java applications within their browser.