Which App(s) for opening GNU Archive (.gz) zipped XML files on iOS?

My email provider occasionally sends me aggregated DMARC reports as XML files that are encrypted with GNU Archive (.gz files). The iOS files App can’t open these archive files. It can preview XML files, but without syntax highlighting.

Which (universal) Apps (that run on both iPhone & iPad) do you recommend for:

  1. Extracting GNU Archive (.gz) archives?
  2. Viewing XML files with syntax highlighting?

(Bonus points if the viewer supports custom color themes, like Nord)

  1. Shortcuts
  2. Runestone

I haven’t encountered your exact usecase but I would think that this still works.

I think Shu does it.

Quite surprised that Shortcuts support this, would never have thought of that…