PDF-A-go-go: HTML Download Handler Example

This example demonstrates how PDF-A-go-go handles cases where a PDF download URL initially returns an HTML page that triggers the actual PDF download. This is common with institutional repositories and document management systems.

The viewer below is configured to load a URL that returns an HTML page first. The viewer will:

1. Show the HTML page in an iframe
2. Wait for the PDF download to start
3. Load the PDF once downloaded