When using web applications with Javascript, JQuery and other nifty stuff on a pahe it may be tougher to debug with iframes. For sites with applications embedded within the site you may see issues with debugging when using iframes.
![iframe w3schools iframe w3schools](https://4.bp.blogspot.com/-KKTrSUY6daM/VbpmLHrGWaI/AAAAAAAAIX0/VoBlxv3CtlE/s1600/Compare-Bootstrap-MDL.png)
![iframe w3schools iframe w3schools](https://www.codegrepper.com/codeimages/embed-pdf-in-html-iframe.png)
The is added to a page you are looking from one HTML page into another with all of the functionality and interactivity of the two being viewed through the one HTML document or web page.
![iframe w3schools iframe w3schools](https://spb-artstroy.ru/800/600/https/skvazhina-igla.ru/wp-content/uploads/2018/02/ОСКВАЖИН.png)
Inevitably, our team will spend however much time it takes explaining why that is not a good idea.
![iframe w3schools iframe w3schools](https://reactgo.com/d9d671348b3a2aeb445b0f84b97db497/html-editor-demo.gif)
Yes, iframes are still a consideration, even now in 2021 on occasion when developing a new website or updating an older website someone somewhere in the process says “Just use an to bring this page into the web site.