Currently the PDF viewer has the following issues related to keyboard:

1. The PdfViewer is not a tab stop and there is no way to scroll up or down.  There is also no paging, or functions to get to the top or bottom of the document.
2. No way to use with keyboard only.          

Slow performance when opening document with many path geometries and image elements

Provide support for Interactive Forms (AcroForms) in the PDF Viewer for .NET MAUI.

For detailed information on Interactive Forms concept check below: 
https://docs.telerik.com/devtools/document-processing/libraries/radpdfprocessing/model/interactive-forms/overview

 I'd like to have something like this in directly my application:

Add ability to print PDF document from PdfViewer.

Can optionally be via operating system's native print dialog.

add comments and annotations in the pdf viewer.

Currently a loading indicator is displayed when the pdf document is loaded. In some cases rendering takes longer due to heavy content which leads to displaying blank pages for some time. Add a loading indicator while pages are rendered to notify the end user about the action taking place.

There is a similar question in FAQ for FontForge (https://fontforge.github.io/faq.html#mingliu) where it is described that kaiu.ttf (and probably mingliu.ttf) font does not store the correct outlines and its outlines need special treatment in order to be rendered correctly. The Chinese glyphs are rendered wrong in RadPdfViewer as well. However, Adobe Reader, FoxitReader and ChromeViewer render the glyphs correctly.

Provide the option to integrate the hand signature in the PDF document

Hello,

Id would be great having basic editing functionalities in MAUI PDFViewer as you offer in WPF version.
Especially we're interested in having ability to add text and basic shape annotations.

Best Regards,
Raymond

When loading some PDF documents in app that has German/Italian culture, part of the text got missing or there are issues with document visualization.

Provide support to display highlight annotation in the PDF Viewer. Currently, the highlight color is displayed but the text is missing.

In some scenarios it would be great to be able to Fit To (Single) Page Height, not just to Page Width.

I can see Maui's PdfViewer does have a Search Settings property, but currently no information is provided on how to implement its use nor are there toolbar items documented for it.

David Pressman

When document contains paths with tilings, the PDF Viewer does not visualize them, please provide support for this missing feature.

I’m trying to give users the ability to rotate the PDF directly from the PDFViewer toolbar. However, I don’t see any rotation button available in the built-in toolbar.

Provide an option to enable pages rotation in the PDF Viewer.

Provide an option to search in the document, expose toolbar item

when there are input fields with values in them, the values are not displayed in the viewer. 

In a specific document generated from docx the displayed search results are wrong. 

When changing the device culture to be RTL, some PDF documents are not displayed correctly in the PDF Viewer.

When having a waterfront image in the document, it is displayed as a foreground element.

Define tooltip text for toolbar items similar to ImageEditor and RichTextEditor