By coincidence we've found out that the webpage size (each page) of the website i'm maintaining has two Telerik.Web.UI.WebResource.axd files. We came across this behaviour when we did a SEO check. So we've downloaded a page to see the file sizes.
The Telerik.Web.UI.WebResource.axd files:
- Telerik.Web.UI.WebResource.axd = 232kb
- Telerik.Web.UI.WebResource(1).axd = 3294kb
For some reason a second file is being added, which is huge in file size. I've searched the project to find out what's causing this. The only thing that it has, is a RadScriptManager in the Masterpage (which could be the problem maker), where 3 project related scripts are loaded. These scripts are max. 300/400kb in total (this is also huge, but one of them is jQueryUI :)).
So when I delete this RadScriptManager, the page get's EVEN bigger in size with one more Telerik.Web.UI.WebResource(2).axd file.
I've also defined a scriptsfolder (corresponding to the scripts folder name in the project). This didn't help.
<add key="Telerik.Web.UI.ScriptsFolder" value="~/Scripts/;"/>
Does anybody now what could be causing this issue?