The first thing I did was to install the Tridoc PWA so that I can access my document. While Tridoc readily installs on the Desktop from Vanadium id doesn't show up when attempting to share a PDF from the PDF viewer. I then also installed the Share Target Demo App squoosh which regsisters a Share Target for images which also doesn't work.

In an evironment without play store it is particullary important to have fully working PWA. Am I missing a setting or is the play store and chrome needed to get PWA share targets to work?

As far as I know, Vanadium does not support share intents in general, not only for PWAs.

I am not sure why that is the case. From a quick search on GitHub and in this forum, I found nothing on this subject.

You could try with another browser on GrapheneOS that does support share intents like Brave. I don't know if it will work with the PWA.

    For chromium (nightly build) it also says "App not installed as app isn't compatible with your phone."

    treequell not only for PWAs.

    I have just realized that. After more than one year. It seems I cannot share URLs with Vanadium whereas I can choose Brave, Bromite, Mull or Fennec as targets.

      Themble

      I've been looking through https://github.com/GrapheneOS/Vanadium and I haven't been able to find anything about share intents. But I am also not sure what the correct name is. I guess it's somewhere in this page here:
      https://developer.android.com/reference/android/content/Intent

      The only intent in Vanadium I can find is the Web Search Intent, which seems to let you web search text that you highlight on a webpage in Vanadium.
      https://developer.android.com/reference/android/content/Intent#ACTION_WEB_SEARCH
      https://github.com/GrapheneOS/Vanadium/pull/231