selfcontain

Make HTML more self-contained by in-lining:

• JavaScript (minified)
• CSS (minified)
• Images (base-64 encoded)
  • Including (explicitly linked) favicons

For straightforward cases, this will take an HTML document which might have external dependencies and return an HTML document with no external dependencies - a single self-contained file that you could send as an email attachment, or show as a presentation without worrying about internet connectivity, for example.

Cases that are not straightforward are those that involve loading things via JavaScript, iframe things, fonts, and things I haven't thought of. Pull requests welcome!

Usage

Loaded as a module, selfcontain() takes an HTML string and base path or URL and is the main function to know. Command-line usage wraps the minor extension selfcontain_ref(), which takes a string specifying a file path or URL to fetch and process:

selfcontain test_in.html > test_out.html
# or
selfcontain https://raw.githubusercontent.com/ajschumacher/selfcontain/master/test_in.html > test_out.html