I have wanted to add this for a long time and finally got the time to do it.
Now you can select to view a TM page in your browser as a jpg image OR to download the PDF file. There is a radio button under the text to search for box to select what you want to use. By default it is set to display the page you click on as a jpg image in your browser (you can right click and save it if you like) or you can select to view it as a PDF file in a viewer.
I don't think there is much a quality difference, but its just a lot faster to click the thumbnail and then read the page you may (or may not) need than to cycle through a ton of PDF files.
You need javascript to see the new jpg images.