If the PdfViewer is initialized with a default document, the display performance of this document will be a lot worse, compared to PDF documents that are loaded programmatically after the component is already on the web page.

Adding the ability to fill in a PDF online in the PDF Viewer would open a lot of opportunity to the library.

The ability to fill-out, sign, and date would be great with a save callback, so it can be pushed to an API.

This request is for allowing to open other document types in PDF Viewer - for example, Word, Excel. The functionality will target viewing only and not editing.

1. Handle the OnOpen event to get the file bytes
2. Use the appropriate format provider of the RadSpreadProcessing library to import the Word/Excel file
3. Export the file with the PdfFormatProvider
4. Pass the converted file to the PDF Viewer to display it

Note: We've registered a bug with this solution. The PDF Viewer does not open other types of documents from the FileSelect in the Toolbar, they can be opened only on initialization of the component. Currently, the bug is in our backlog. Once fixed, the above-listed solution can be used to configure the PDF Viewer for viewing other document types. A knowledge base resource will be published on the matter.

We still have some problems with printed pdf quality after the updates in 6.0.0. When pdf is printed using Telerik PDF viewer it seems it gets processed/rasterized and loses quality.

Hallo,

i want to Render PDF Files with the PDF Viewer Component.

The Data of the PDF is already fetched from the API when the PDF-Viewer starts Rendering the Loading animation appears and freezes.

After a few Seconds the PDF will be Rendered.

The size of the PDF File is about 5MB.

Hello, I like the Telerik PDF Viewer for Blazor, but it's not supporting Table of Contents (TOC) links.  I would like to request this feature so that there are links in the TOC automatically.  I'm using Blazor WebAssembly.

Thank you for considering my request.

Pdf viewer should display form fields like Text fields, check boxes, etc and allow users to type in fields.  Also support form field calculations.

Once populated, allow client side save to a file blob so that the data could be posted to a server or really whatever the dev wanted to do with it.

Set the PdfViewer document (data) value to null. As a result, an endless loader will appear.

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ADMIN EDIT

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A possible workaround for the time being is to re-initialize the component after clearing the file: https://blazorrepl.telerik.com/cHYwQola24zzBOAd02.

Please expose a parameter to show or hide the "Select files..." button inside the empty PDF Viewer.

Currently, a possible workaround is to use CSS. Additionally, you may configure the Toolbar to not include the "Open" tool.

<style>
    .no-open .k-blank-page {
        display: none;
    }

    /* Use these selectors if you want to separately target the upload or the dropzone */
    /* .no-open .k-external-dropzone,
    .no-open .k-upload{
        display: none;
    } */
</style>

<TelerikPdfViewer Data="@PdfSource"
                  OnOpen="@OnPdfOpen"
                  Height="600px"
                  Class="no-open">
    <PdfViewerToolBar>
        <PdfViewerToolBarDownloadTool />
        <PdfViewerToolBarPrintTool />

        <PdfViewerToolBarSpacer />

        <PdfViewerToolBarPagerTool />

        <PdfViewerToolBarSpacer />

        <PdfViewerToolBarZoomTool />
        <PdfViewerToolBarSelectionTool />
        <PdfViewerToolBarSearchTool />
        <PdfViewerToolBarAnnotationsTool />
    </PdfViewerToolBar>
</TelerikPdfViewer>

@code {
    private byte[] PdfSource { get; set; }

    private bool LoaderVisible { get; set; }

    private async Task OnPdfOpen(PdfViewerOpenEventArgs args)
    {
        // Cancel the event for additional precaution in case someone bypasses the CSS and forces the page to show the button and the dropzone.
        args.IsCancelled = true;
    }
}