The Convert url to preview (iframe) plugin is a game-changer for Obsidian users who want to quickly and easily add previews of web pages to their notes. With this plugin, you can simply select a URL, right-click on it, and choose "Url to Preview/Iframe" to generate an iframe that displays the webpage's content. The plugin supports OEmbed standard, which allows it to preserve timestamps on YouTube videos and get default sizes for many websites. You can also customize the aspect ratio of the iframe and set a hotkey to make the process even more efficient. Overall, this plugin is a great addition to any Obsidian user's workflow, making it easy to add multimedia content to their notes.