Why am I not able to view screenshots pasted into an HTML dashboard viewlet in Internet Explorer 8 (RTC)?
One answer
When you paste an image in the HTML viewlet, the image is embeded directly in the HTML document via the data URI scheme. Data URI's are supported in IE8 with a 32K limit. IE9 removed this limit. This is the reason why only pasted images smaller than 32K are displayed in IE8.
Find more details on the data URI scheme here: http://en.wikipedia.org/wiki/Data_URI_scheme
A workaround is to make sure the image is uploaded to some location and is accessible via a standard URL. Load the image in the browser then highlight it and copy it to the clipboard. Paste the image from the clipboard into the HTML viewlet. The image will not be embedded in the HTML document and will be loaded with a second HTTP request