[Feature]: Can the PDF dist toolbar be freely controlled to display or not?

[zbr826858040]

Is the feature relevant to the Firefox PDF Viewer?

Yes

Feature description

Snuffleupagus asked me to fill out this issue in English and as a bug tracker, but I don't think it's a bug.
My project is an engineering project for the Vue3 technology stack. I used viewer.html from the pdf-dist project and used iframe preview. The effect is great!
However, when I want to hide some of the buttons on the toolbar, or move the demo mode button in the expanded right side next to the save button, and if possible, I would like to change the icon of the button to my custom icon.
A small feature request, expecting a response.

Other PDF viewers

No response