How can I dump the entire Web DOM in its current state in Chrome?

Question

I want to dump the current DOM to a file and be able to view it offline. Essentially, I have an outdated version of a page that I would like to keep around for comparison. A

Answer 1

Command line solution

This is easy to do with newer releases of Chrome:

google-chrome --headless --dump-dom 'http://www.yahoo.com'

(The OP may not have been looking for a command line solution but this search result appears high when searching so others might find it useful)

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Original answer 2017

My favorite way to do this is:

docker run -it --rm --name chrome --shm-size=1024m --cap-add=SYS_ADMIN --entrypoint=/usr/bin/google-chrome-unstable yukinying/chrome-headless-browser --headless --disable-gpu --dump-dom https://www.facebook.com

If you're not familiar with how Docker works, be patient - the first time will be slow but subsequent invocations will be quick.

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Other information

Tested on

Ubuntu 16

Linux intel-nuc 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux

Docker version:

Docker version 1.10.3, build 20f81dd

Mac OS X Sierra

Darwin MacBook-Pro.local 16.7.0 Darwin Kernel Version 16.7.0: Thu Jun 15 17:36:27 PDT 2017; root:xnu-3789.70.16~2/RELEASE_X86_64 x86_64 i386 MacBookPro14,3 Darwin

Docker version:

Docker version 17.06.1-ce, build 874a737

If you install tidy you can indent the HTML too.