Please add support for Data Matrix barcodes.  As of Q3 2014 this is the only format we will still need to rely on another library to create an image that is placed in a picture box.  We would much rather be able to use the Barcode control for all our barcode requirements.

For our Customers a major drawback to creating form type reports (Invoices, Purchase Orders etc.) using Telerik Reporting is the inability to show vertical dividing lines between data columns in the 'Detail' section of the report that extend all the way down the page to the Page/Report footer. We were able to do this with Crystal Reports. But we plan to migrate all our Crystal reports to Telerik.

To have a better performance would be nice to cancel report rendering automatically or manually. 
If I am asking for a big report and after I change parameters and request new report, the previous request is still in progress and it is not going to be cancelled. Therefore I see high memory consumption on continuously refreshing a reports with a big data and after some time I see complete slow down of the Reporting Service and of course slow down of the server itself. The memory in this case is not released and Reporting Service crashes sometimes.

I have scenario like this: Sam requests a product report from company A.  Marvin creates the report and send it back to Sam.  Sam imports it.  It would be best if Marvin (Author of the report) could specify all the meta data so that Sam doesn't have to enter these things.

In my case I need following metadata for the report:

• Keyword: some external tags...
• Description: a description so that the user can understand what this report will show and the purpose of the report.

We often receive feedback regarding hard/impossible editing of reports after they are exported to Word format.
The existing rendering mechanism will produce Word tables which are harder for manual editing - http://docs.telerik.com/reporting/designing-reports-considerations-word

Let us know in comments about your experience with editing reports exported to Word format so we can understand more clearly what is required from Reporting Word rendering extention.

I used https://docs.telerik.com/reporting/html5-report-viewer-howto-use-it-with-reportserver to setup an HTML5 Report Viewer with Report Server. After running the project, the viewer does not load. It seems that it could not find telerikReportViewer script. 

Workaround: Instead of

<script src="/api/reports/resources/js/telerikReportViewer"></script>

use absolute path:<script src="http://yourreportserverhost:83/api/reports/resources/js/telerikReportViewer"></script>

Add the ability to control the distance between the Image and the Text for a Check Box & Radio Box. A space may be used but this does not work where the text wraps to another line and does not give the required level of control.

It would be good if the table headers can be frozen.  This can  be really useful in case of a big report which is displayed on a single page.

It would be very handy, if the value property of the PictureBox would resolve images from base64 strings besides the Image, Image byte[], relative or absolute URI.
It should be fairly simple to implement. I wrote my own user function for this. It would be beneficial to have this out of the box.

[Function(Category = "Image", Namespace = "ImageFunctions", Description = "Converts a base64 string to an image byte array")]
public static byte[] ConvertFromBase64(string imageString)
{
    if (imageString != null)
    {
        // Convert base 64 string to byte[]
        byte[] imageBytes = Convert.FromBase64String(imageString);
        return imageBytes;
    }
    else
    {
        return null;
    }
}

We are using Telerik Report Viewer in our ASP.NET MVC application. I've read the documentation about localizing the report viewer (https://docs.telerik.com/reporting/html5-report-viewer-localization) and most of the texts are localized now, but there are some other that I can't change.

For example, in the search menu, result list, 'page xx' text.

Can you add this string resource in the resources file?