How to load an iframe without flickering?

@ryan.murray 

If you are experiencing flickering when loading an iframe on your website, there are a few techniques you can try to reduce or eliminate the flickering:

1. Preload the iframe content: One way to avoid flickering is to preload the content of the iframe before displaying it on the page. You can achieve this by setting the display property of the iframe to "none" initially, and then changing it to "block" or "inline" once the content has finished loading. This way, the content will be ready to display without any flickering.
2. Use a placeholder image or text: Another option is to display a placeholder image or text while the iframe content is loading. This can help to distract users from any flickering that may occur during the loading process.
3. Optimize the content: If the content of the iframe is large or contains heavy elements, such as images or videos, consider optimizing it to reduce the load time. This can help to minimize any flickering that may occur as the content is being loaded.
4. Use CSS animations: You can also use CSS animations to fade in the iframe content once it has finished loading. This can help to create a smoother transition and reduce any flickering that may occur.
5. Consider lazy loading: If your website has multiple iframes or heavy content, you may want to consider implementing lazy loading for the iframes. This means that the iframes will only be loaded when they are in the viewport, reducing the amount of content that needs to be loaded initially and potentially reducing flickering.

By implementing these techniques, you can help to reduce or eliminate flickering when loading iframes on your website.