This PHP script is a server-side proxy designed to bypass restrictions that prevent embedding external websites within iframes. Many websites use security headers (e.g., X-Frame-Options or Content-Security-Policy) to block their content from being displayed in iframes, leading to errors like "Content refused to connect." when trying to embed them directly. This proxy script retrieves the content server-side, modifies it, and delivers it to the iframe, effectively circumventing these restrictions.
This script is particularly useful for integrating external web pages into Reveal.js presentations. Reveal.js allows the use of iframes to display content during slideshows. However, embedding some web pages directly often fails due to security restrictions. By using this proxy script, users can include external content seamlessly in their presentations without encountering connection errors.
