Increase PDF image quality using Universal viewer

garytemp88

Hi,

How can I increase the Universal viewer PDF Images quality? I have tried changing the config. of app/con/media_processing.conf at Providence but seems not working.

Any suggestion? Thank you.

Gary

seth

If you change media_processing.conf you'll have to reprocess all existing images to see a difference. You may consider changing the viewer used for PDFs in media_display.conf to PDF.js. This will use the PDF directly, and generally provides significantly better quality. The configuration would look something like this:

pdf = {
		mimetypes = {application/pdf},
		display_version = tilepic,
		alt_display_version = mediumlarge,
		width = 100%, height = 100%,
		download_version = original,
		
		# Scroll mode to open viewer with by default. Values are:
		#	VERTICAL = vertical scrolling
		#	HORIZONTAL = horizontal scrolling
		#	WRAPPED = wrapped display
		#	DEFAULT = user default (whatever the user last selected)
		scroll_mode = DEFAULT,
		
		viewer = pdfjs
	},

garytemp88

Hi Seth,

Thanks for your reply. I tried re upload a test PDF. It shows no difference after changing media_processing.conf. Could you advise how to change the configuration?

For PDF.js, it provides much better quality. However, is it possible to remove the download button or disable the download function on the viewer? Our admin does not want users download the full PDF by clicking a button.

Gary