src The URL of the page to embed. The following is a summary of the tags and attributes used in this iframe example: HTML tags. Now, our functionality is working properly and I hope we will also pass the Security Review successfully. An HTML iframe embeds another document within the current HTML document in the rectangular region. Even though I had used iframe in HTML before it was not until very recently when a teammate of mine used them and I went through his code that I understood them better. Your site visitors are only as safe as the content of all the sites you link to. Lack of control – Even though iframes can somewhat control content inside them to a small degree, irritating content like autoplaying videos and popups can cause a bad user experience. Don’t worry if that sounds quite technical. These frames are essentially a section of your page that you "cut out." Allow: With this parameter, you can set certain default behaviors or features for your iFrame, such as full-screen viewing or payment processing. Originally Answered: Is it good to use iframes in HTML? Tip: Use CSS to style the