Is there a browser, that allows us to change DOM on the fly, without all the restrictions of chrome extensions ( even mozilla is doing web extensions ) like saving to hard disk, script injection, and being more developer friendly ?
Vivaldi might be your best bet: <a href="https://vivaldi.com" rel="nofollow">https://vivaldi.com</a><p>Interacting with disk isn't easy with Chrome, but using something like Styler or GreaseMonkey (or whatever it's called now) lets you mess with a page however you want.<p>The overhead of an extension is pretty small, once you actually build it and set your browser to developer mode.
It doesn't seem to be actively developed, and may not work well out of the box, but <a href="https://www.uzbl.org/" rel="nofollow">https://www.uzbl.org/</a> may be an option, or at least give some inspiration.