Embedding all the external resources of an HTML page into a single file using javascript in the browser

Question

As you all know, external resources, like images, can be embedded into the html file using base64 encoding:

<img src="data:image/png;base64,iVBORw0KGgoAAAANS..." />

I'm looking for a pure browser-based javascript way to traverse an html page and embed all the external resources into the file so when I say $("html").html(), it returns all the page's contents. Even including its external resources.

Just so it makes sense, I'm trying to download web pages into single files using a headless browser on my server.

Answer 1

There are tools out there to do that. Examples:

• https://github.com/remy/inliner
• https://github.com/jgallen23/grunt-inline-css
• https://github.com/ceee/grunt-datauri

While there are benefits to this approach, remember that a page visited more than once, or site with multiple pages with same JS/CSS files will enjoy client (browser) side caching.