Purpose of chromium as a Quarto tool?

[dmbates]

quarto tools list shows that chromium is available as a optional tool for Quarto. I use Linux (Ubuntu 22.04) with firefox installed. When I preview a quarto document (with Julia code chunks executed through Jupyter) I sometimes get warnings like

Gtk-Message: 09:00:50.757: Failed to load module "canberra-gtk-module"
Gtk-Message: 09:00:50.758: Failed to load module "canberra-gtk-module"
ATTENTION: default value of option mesa_glthread overridden by environment.
ATTENTION: default value of option mesa_glthread overridden by environment.
ATTENTION: default value of option mesa_glthread overridden by environment.
Missing chrome or resource URL: resource://gre/modules/UpdateListener.sys.mjs

I tried installing chromium through

quarto tools install chromium

and do get an installation in ~/.local/share/quarto/chromium/ but this does not seem to affect the preview.

P.S. Are there Ubuntu packages I should add to address the canberra module loading warnings?

[cderv]

Chromium is among the tools offer for install as it is required to Diagrams feature in PDF and DOCX outputs (where diagrams are printed to images)

See https://quarto.org/docs/authoring/diagrams.html

Thanks for the report of the issue above. It is rather cryptic. Can you share a document where this happens so we can reproduce ?
Are you using Diagrams ?