Paste and Go Key is a Firefox extension designed to streamline the process of pasting URLs directly into the browser's address bar. This tool introduces a customizable keyboard shortcut that pastes clipboard content into the current tab's URL bar or a new tab, automatically loading the URL or initiating a search if the content isn't a valid link. Users can adjust settings to choose their preferred search engine, although the search function is disabled by default. Additionally, a convenient toolbar button is included for easy access to its features.

This extension has a compact file size primarily due to its icon images, with the actual code being approximately 15 kB. Notably, users with Firefox versions 57 to 59 cannot change the default shortcut key. The extension supports multiple languages, with contributions from translators in Chinese Simplified, Italian, Portuguese, and Swedish, enhancing accessibility for a diverse user base.