Is it good practice to use iframe
Google recommends refraining from creating iframes. At there Webmasters Help Forum, Google clearly stated that iframes may cause problems for them: IFrames are sometimes used to display content on web pages. Content displayed via iFrames may not be indexed and available to appear in Google's search results.
Are iFrames bad for performance
Can iframes affect the loading speed of my website Every iframe on a page will increase the memory used as well as other computing resources like your bandwidth. So, you should not use iframe excessively without monitoring what's going on, or you might end up harming your page performance.
Why should I avoid iframe
iframe injection is a very common cross-site scripting attack. iframes use multiple tags to display HTML documents on web pages and redirect users to different web addresses. This behavior allows 3rd parties to inject malicious executables, viruses, or worms into your application and execute them in user's devices.
Is iframe outdated
Iframes are obsolete for page layout. Never use them instead of good CSS layout, even table-based layout is better. Good reasons for using iframes are: ads: adwords for example uses this technique, it is good for encapsulating – ad css won't destroy your page.
Is iframe better than embed
As mentioned, we use iframe to embed an HTML document onto a page. Alternatively, embed is used to embed other types of content, including PDFs, browser plugins, and Flash animations. The embed element can also be used to place media, but iframe is better for this purpose.
What is a better alternative to iframe
As others have mentioned you can also use the embed tag and the object tag but that's not necessarily more advanced or newer than the iframe.
Is iframe a security risk
The main security threat of iFrames is XSS (cross-site scripting) attacks. Attackers can perform XSS attacks in multiple ways. For example, they are changing the source site URL, installing malware, stealing information, or hijacking clicks and keystrokes through an iFrame.
Is iFrame a security risk
Despite its popularity, iFrames carry several security risks that could let in attackers if we do not take the necessary security steps. Today's developers need to ensure both the content used in iFrame and the iFrame configuration follow security guidelines to avoid opening vulnerabilities.
What is a better alternative to iFrame
As others have mentioned you can also use the embed tag and the object tag but that's not necessarily more advanced or newer than the iframe.
Which is better iframe or object
iframe is currently the most common tag overall, whereas embed is allegedly being deprecated. One important thing to note here is that, while all these tags embed object and iframe can handle video, it is generally a better decision to use the <video> tag if you are planning to embed videos in your HTML page.
