There are many instances where we would like to include an entire HTML page inside a Jekyll blog. This is usually done using the Jekyll’s include directive. However for it to work, the included page has to be inside the _includes directory. There is also a include_relative directive, whose documentation is confusing at best. Also these include* mechanisms fail if a sufficiently complex HTML page (such as Tiddlywiki ) were to be included. The following solution which just uses a simple iFrame seems work work rather well:

1. Create a directory in the root of the blog with some name, say files
2. Drop the file to be included in that directory, say example.html.
3. Add a code snippet similar to the below in a post.

<div id="included">
  <iframe height="500" width="800" scrolling="yes"
    src="/files/example.html"
    frameborder="no" allowtransparency="true" allowfullscreen="true">
  </iframe>
</div>

The output should look like the below.